Site Preparation Guide 01 — From Raw Backyard to Framing-Ready Foundation
A premium backyard building starts before the first wall is framed. The site must be reviewed, cleared, shaped, drained, compacted, stabilized, protected from moisture, and prepared so the structural floor system has a dependable place to perform.
This guide walks homeowners through the complete site-preparation sequence used to move from an ordinary backyard location to a build-ready foundation platform. It includes access, utilities, drainage, subgrade preparation, geotextile fabric, #57 limestone, 10 mil moisture barrier, 6×6 pressure-treated foundation beams, 2×6 floor joists, 3/4-inch pressure-treated plywood subfloor, and the final readiness check before wall framing begins.
What Site Preparation Is Needed Before a Backyard Building Is Built?
A backyard building site is ready when the location is accessible, clear of known utility conflicts, shaped for drainage, cleared of organic material, prepared with a stable compacted subgrade, separated with geotextile fabric, built with a clean stone base, protected with a moisture-control layer when specified, and ready for the selected foundation system.
For a premium built-on-site structure, site preparation should be reviewed before final building size, placement, options, and construction schedule are confirmed. A serious site-prep plan evaluates water flow, slope, soil firmness, tree roots, downspouts, access path, gate width, fencing, private utility lines, work-zone clearance, gravel/base requirements, and long-term foundation performance.
The safest planning standard is simple: choose the building location only after the property has been reviewed for drainage, access, soil, utilities, approvals, foundation readiness, maintenance clearance, and future use.
Built-On-Site Does Not Mean Light-Duty Site Prep
Some backyard buildings require more than a clear patch of grass. Larger sites, sloped yards, gravel pads, drainage corrections, access routes, material staging, and foundation preparation may require equipment, coordination, and construction judgment before framing ever begins.
Equipped for Larger and More Demanding Site-Preparation Scopes
The Vintage Shed Company plans site preparation as part of the project, not as an afterthought. When a property requires heavier staging, gravel handling, grading support, trench coordination, or equipment access, the site plan should be reviewed before the build schedule is finalized.
This matters because access, slope, drainage, soil conditions, driveway approach, staging space, and utility awareness can all affect what kind of equipment can be used and how the foundation area should be prepared.
Final Equipment Needs Are Site Specific
Representative site-preparation capability visualization. Final equipment needs vary by access, grade, soil conditions, drainage, utility conflicts, property restrictions, and project scope.
The right question is not simply whether equipment is available. The better question is whether the property, access route, soil, slope, and drainage conditions support the best preparation plan for the building being considered.
The 14-Step Site Preparation & Foundation Readiness Sequence
This visual section belongs near the top of the page because homeowners need to see what “site ready” actually means. Each image slot below has a unique placeholder that can be replaced later with the final WordPress image URL.
Underground Utility Notification — 811 Call Before You Dig
Before any excavation, stake driving, grading, or equipment placement, underground utility notification must be handled. In Ohio, Kentucky, and Indiana, 811 notification is the required safety step before ground disturbance.
Utility operators mark registered underground infrastructure using standardized color-coded paint and flags. Private lines such as irrigation, pet fencing, landscape lighting, septic, drainage, pool lines, propane, or homeowner-installed utilities may require separate disclosure or investigation.
- Coordinate 811 before soil disturbance.
- Respect marked utility lines and required hand-dig zones.
- Identify private underground lines that public marking may not locate.
Clear the Site — Every Organic Material, Every Obstruction, Gone
The proposed building area is cleared to bare ground. Vegetation, brush, debris, surface obstructions, loose material, and any existing shed or outbuilding are removed before layout or excavation begins.
Nothing should be buried, hidden, covered, or worked around. Organic material left beneath a foundation can rot, compress, hold moisture, and create long-term settlement problems.
- Remove vegetation, brush, roots, debris, and surface obstructions.
- Coordinate complete removal of any existing shed or outbuilding.
- Confirm access for site-prep materials and construction workflow.
Stakes, Flags & Batter Boards — The Layout That Controls Everything Below
The rough pad boundary is staked and flagged, and the actual building footprint is established. For the 10×12 example, the prepared pad is planned at 14×16 minimum, giving at least 2 feet of prepared base beyond each side of the building.
Batter boards, string lines, and laser elevation checks help control building position, squareness, drainage relationship, and finish floor elevation before the ground is disturbed.
- Stake the rough pad and confirm the building footprint.
- Use batter boards and string lines where needed.
- Confirm elevation in relation to drainage and surrounding grade.
6-Inch Minimum Excavation — Nothing Organic Remains Beneath the Pad
Sod, root systems, organic topsoil, loose material, and biologically active material are excavated from the prepared pad area. In clay-heavy or unstable conditions, excavation may need to extend deeper to reach stable inorganic soil.
The goal is not just lowering the ground. The goal is removing material that will decay, compress, hold moisture, or weaken the stone base over time.
- Remove sod, roots, stumps, topsoil, and organic material.
- Excavate to support the intended stone depth and drainage plane.
- Stockpile clean topsoil only where it can be reused for final grading.
Inspect, Regrade & Compact the Native Subgrade
After excavation, the exposed subgrade is inspected for soft spots, loose fill, trapped roots, wet pockets, unstable soil, and areas that may pump, rut, or settle. Unsuitable material is removed, replaced, or reworked before the base continues.
The subgrade is shaped for positive drainage and compacted in overlapping passes. The goal is a firm, consistent bearing surface below the fabric, stone, moisture barrier, beams, joists, and subfloor.
- Inspect exposed subgrade for soft, wet, loose, or unstable areas.
- Remove, replace, or rework unsuitable material before fabric installation.
- Compact the prepared subgrade in overlapping passes.
Separation Fabric — Keeping Stone Clean, Stable & Structurally Useful
Commercial geotextile stabilization fabric is rolled out across the prepared pad area before any stone is placed. The fabric separates compacted soil from the crushed stone base above it.
This helps prevent clean stone from sinking into clay, mud, or softened soil over time while still allowing water movement through the base.
- Install fabric across the full prepared pad area.
- Overlap seams where multiple fabric runs are required.
- Do not place stone directly over clay, mud, roots, or exposed organic material.
Pressure-Treated Perimeter Containment — Holding the Stone Base in Place
Pressure-treated perimeter containment is installed around the prepared pad area before the stone base is placed. The containment defines the pad boundary, protects the clean edge, and helps prevent stone migration into the yard.
The perimeter is checked against the planned layout and secured where site conditions allow so it maintains alignment during stone placement, grading, and long-term use.
- Install pressure-treated perimeter containment around the pad.
- Check alignment against layout references.
- Secure containment where site conditions allow.
6-Inch #57 Washed Limestone Base — Drainage, Bearing & Stability
A minimum 6-inch layer of #57 washed limestone, or comparable clean angular stone, is placed across the prepared pad area inside the perimeter containment.
Clean angular stone creates a stable, free-draining base below the moisture barrier, foundation beams, and floor system. Water can move through the stone instead of collecting directly under the structure.
- Install a minimum 6-inch clean angular stone base.
- Spread stone evenly across the prepared pad.
- Maintain pad extension beyond the building footprint for drainage and serviceability.
Level, Seat & Consolidate the Stone Base Before Moisture Protection Begins
The #57 limestone base is leveled, checked against planned elevation, and consolidated across the full pad area. High spots are corrected, low areas are filled, and the finished surface is prepared for the moisture-control layer.
Clean angular stone does not compact like soil. The goal is to seat, settle, and stabilize the stone so it supports the foundation layers above without shifting or rocking.
- Level stone to the intended drainage plane.
- Seat and consolidate clean angular stone.
- Correct uneven areas before the moisture barrier is placed.
Moisture Barrier Over Stone — Separating the Wood Foundation from Ground Moisture
A 10 mil polyethylene moisture barrier is placed over the consolidated stone base before the foundation beams are set. Sheets are laid flat, overlapped, and taped where multiple pieces are required.
This layer helps reduce ground moisture exposure beneath the structural floor system. It is installed above the finished stone and below the 6×6 foundation beams.
- Install 10 mil polyethylene over the consolidated stone base.
- Overlap and tape seams where required.
- Protect the barrier from unnecessary punctures during beam placement.
6×6 Ground-Contact Foundation Beams — The Structural Base That Carries the Floor
Ground-contact pressure-treated 6×6 foundation beams are set on top of the moisture barrier and aligned with the actual building footprint. The beams run in the 12-foot direction for the 10×12 example and are spaced evenly across the width.
Each beam is checked for straightness, alignment, spacing, and elevation. The beam system must be level, co-planar, and properly positioned before the 2×6 floor joist system is installed above it.
- Set ground-contact pressure-treated 6×6 beams over the moisture barrier.
- Align beam layout to the final building footprint.
- Check beam spacing, elevation, and co-planar bearing before framing.
2×6 Pressure-Treated Floor Joists — Framed 16 Inches on Center With Blocking
The floor system is framed with 2×6 pressure-treated joists installed at 16 inches on center. The joists run perpendicular to and bear directly on the 6×6 foundation beams.
Rim framing and blocking help lock the floor system together, control joist movement, improve stiffness, and prepare the frame for subfloor installation.
- Install 2×6 pressure-treated joists at 16 inches on center.
- Confirm full bearing on the 6×6 foundation beams.
- Install blocking and rim framing where specified for stiffness and layout control.
3/4-Inch Pressure-Treated Plywood Subfloor — Framing-Ready Platform Complete
The completed floor frame is covered with 3/4-inch pressure-treated plywood. Sheets are laid out, aligned, and fastened to the 2×6 joist system so the platform is solid, square, and ready for exterior wall framing.
At this point, the structure has a complete layered foundation system below it: cleared ground, compacted subgrade, fabric, clean stone, moisture protection, 6×6 beams, 2×6 joists, blocking, and structural subfloor.
- Install 3/4-inch pressure-treated plywood over the floor joists.
- Fasten sheets to the joist system and rim framing.
- Check the platform for solid bearing, squareness, and stiffness.
Final Foundation Readiness Check Before Wall Framing Begins
Before exterior walls are framed, the completed platform is checked as a system. This includes subfloor fastening, joist bearing, beam alignment, squareness, level, drainage exposure, moisture-barrier placement, pad clearance, and work-zone readiness.
This final check gives the visible building work a dependable starting point. Once walls, siding, roofing, doors, windows, and finishes are installed, correcting a weak foundation condition becomes much more difficult.
- Confirm the platform is square, stable, and framing-ready.
- Check drainage clearance and exposed pad perimeter.
- Verify the floor system is ready before walls are started.
Unprepared Site vs. Build-Ready Site
Open space in the yard is not the same thing as a build-ready location.
| Site Topic | Unprepared Site | Build-Ready Site | Why It Matters |
|---|---|---|---|
| Drainage | Water collects after rain or flows toward the proposed building location. | Water moves away from the building area and does not sit near the base. | Moisture is one of the largest long-term risks to floors, siding, trim, and foundation areas. |
| Slope | The location is steep, uneven, or soft without a base strategy. | Slope is reviewed and the base plan accounts for leveling, support, access, and water movement. | Slope affects foundation choice, cost, access, steps, drainage, and final appearance. |
| Access | The crew path is blocked by narrow gates, fencing, landscaping, debris, steps, or tight side yards. | There is a known path for materials, tools, ladders, crew movement, and safe work-zone setup. | Built-on-site construction helps with tight access, but materials still need a practical path. |
| Utilities | Underground lines, private utilities, irrigation, pet fencing, septic, or drainage systems are unknown. | 811 coordination is handled before ground disturbance, and private lines are disclosed or investigated. | Utility awareness is a safety issue and a schedule issue. |
| Foundation Readiness | The base choice is made before the site is understood. | The foundation/base approach matches drainage, slope, soil firmness, intended use, and access. | The base is one of the hardest things to correct after the building is complete. |
| Work Zone | The footprint is clear, but there is no room to work around it. | The area includes clearance for framing, siding, roofing, ladders, staging, and safe movement. | The crew needs more than the exact building footprint. |
| Future Use | Electrical, HVAC, plumbing readiness, or finished interior plans are treated as later decisions. | Future utilities and comfort plans are discussed before foundation, trenching, and placement are finalized. | Future use can affect site prep, utility paths, insulation readiness, and building orientation. |
Review the Site Before the Building Plan Becomes Final
This sequence helps keep the site conversation practical and prevents avoidable rework.
Water Should Move Away From the Building, Not Toward It
If the site naturally holds water, the foundation and floor system will be asked to solve a problem the site should have addressed first.
Avoid Low Spots
The preferred location should avoid low pockets where stormwater sits after rain. The goal is to place and prepare the building area so water does not collect around the foundation or lower wall materials.
Study Runoff Paths
Water from the house, garage, driveway, patio, neighboring slope, or downspout discharge can undermine a backyard building site if it is ignored during placement.
Match the Base to the Site
A gravel pad, treated beam foundation, pier system, slab, or other base solution should be planned around water movement so the site does not hold moisture against the structure.
Built-On-Site Construction Solves Many Delivery Problems — But It Still Needs a Real Work Path
One advantage of built-on-site construction is that the finished building does not have to be driven, tilted, dragged, or maneuvered into the yard as a completed object. This can make a major difference for properties with fences, gates, mature landscaping, trees, tight side yards, retaining walls, or limited turning space.
Built-on-site does not mean access does not matter. The crew still needs to bring in materials, framing components, siding, roofing, fasteners, ladders, tools, and sometimes site-prep materials. The route should be reviewed before the project begins.
Before the Ground Is Disturbed, Underground Utilities Must Be Respected
Site preparation can involve digging, leveling, grading, trenching, pier work, or excavation. Utility awareness is a safety issue, not paperwork.
811 Locate Requests
Any project involving digging, grading, trenching, pier work, excavation, or utility pathways should include proper 811 utility-marking coordination before work disturbs the ground.
Private Lines
Public marking may not identify private electric, irrigation, landscape lighting, drainage lines, propane, septic, pet fencing, pool lines, or homeowner-installed utilities.
Future Utilities
If the building may later become a workshop, backyard office, home studio, pool house, or conditioned retreat-style structure, utility pathways should be discussed before the site and foundation plan are finalized.
Easements and No-Build Areas
Utility easements, drainage easements, sewer easements, access easements, conservation areas, and recorded restrictions can affect where a backyard building may sit.
Every Layer Has a Job Before the Walls Go Up
The goal is not just a flat pad. The goal is a prepared system that drains, supports the structure, resists soil movement, controls moisture, and gives the floor framing a stable place to bear.
| Foundation Layer | What It Provides | Builder’s Note |
|---|---|---|
| 811 Utility Notification | Identifies underground utility risks before ground disturbance. | Required before excavation, stake driving, grading, or equipment work. |
| Cleared Work Zone | Removes organic material, debris, old structures, and surface obstructions. | Nothing should be buried, covered, or worked around. |
| Layout & Elevation | Controls pad size, building footprint, squareness, and finish floor elevation. | Stakes, flags, batter boards, and laser checks help prevent guesswork. |
| Excavated Subgrade | Removes sod, roots, topsoil, and unstable organic material. | Minimum excavation depth may increase where clay or site conditions require. |
| Compacted Subgrade | Creates a firm, stable bearing surface below the drainage base. | Soft, wet, or loose material is corrected before fabric and stone are installed. |
| Geotextile Fabric | Separates clean stone from soil and helps prevent stone migration into clay. | This fabric goes below the gravel and does not replace the 10 mil moisture barrier. |
| Perimeter Containment | Defines and protects the stone pad edge. | Pressure-treated containment helps preserve the finished pad footprint. |
| #57 Limestone Base | Provides drainage, bearing, and a stable open-graded stone layer. | Minimum 6 inches of clean angular stone for the 10×12 example. |
| Consolidated Stone | Seats and stabilizes the gravel base before moisture protection begins. | Clean angular stone is leveled, adjusted, and confirmed stable. |
| 10 Mil Moisture Barrier | Separates ground moisture from the wood foundation system above. | Installed above finished stone and before 6×6 beams when specified. |
| 6×6 Foundation Beams | Provides the primary structural bearing base for the floor system. | Beam layout should be straight, evenly spaced, level, and co-planar. |
| 2×6 Floor Joists | Creates the structural grid that supports the plywood subfloor. | Joists bear on the 6×6 beams and are checked before sheathing. |
| 3/4-Inch PT Subfloor | Completes the framing-ready platform for wall construction. | Installed after beam and joist layout are confirmed. |
| Final Readiness Check | Confirms the platform is ready before walls go up. | Squareness, bearing, fastening, drainage, and work-zone readiness are reviewed. |
A 100-Mile Service Area Means Site Conditions Are Not One-Size-Fits-All
The Vintage Shed Company serves the Cincinnati Tri-State region and surrounding communities within roughly 100 miles, including properties in Southwest Ohio, Northern Kentucky, and Southeast Indiana. A flat suburban lawn, wooded hillside, rural gravel drive, lake property, sloped yard, tight fenced backyard, or poolside setting may each require a different site-preparation plan.
In this region, site planning may need to account for clay-heavy soils, freeze/thaw cycles, heavy rain, shaded yards, mature tree roots, drainage swales, downspout discharge, retaining walls, private utility lines, and HOA or subdivision placement restrictions.
These Conditions Should Be Checked Before Build Day
A red flag does not automatically mean the project cannot move forward. It means the site should be reviewed before the plan becomes final.
Standing Water After Rain
If the proposed location stays wet after storms, the site may need drainage review, relocation, grading, gravel, or a different base strategy.
Downspouts Draining Toward the Site
Roof runoff from the house, garage, or nearby structures should not be directed toward the new building location.
Soft Soil, Fill, or Spongy Lawn
Soft or unstable ground can affect foundation performance, base selection, moisture exposure, and construction access.
Steep Slope or Uneven Grade
Sloped yards may require leveling, stepped access, drainage planning, retaining considerations, or a different building placement.
Tree Roots, Stumps, or Low Branches
Roots, stumps, limbs, and overhead obstructions can interfere with placement, access, roof clearance, and long-term maintenance.
Narrow Gate or Tight Side Yard
Built-on-site construction helps with tight access, but the crew still needs a reasonable path for materials, tools, ladders, and workflow.
Unknown Underground Utilities
Private utilities, irrigation, lighting, pet fencing, drainage, pool lines, and septic components should be disclosed before digging or site preparation.
Easements or Property-Line Issues
Placement should be checked against access needs, maintenance clearance, setbacks, easements, drainage routes, and future serviceability.
Clear Responsibility Builds Trust and Prevents Build-Day Surprises
Some site-prep issues can be evaluated during project planning. Others require homeowner verification, public utility marking, HOA approval, or site-specific professional review.
What The Vintage Shed Company Can Help Evaluate
- Site access from driveway to the proposed build location.
- Slope, drainage, wet-area, and water-flow concerns.
- Work-zone clearance around the building location.
- Likely foundation, base, gravel, or leveling needs.
- Moisture concerns around the floor system and lower walls.
- Downspout, patio, driveway, and runoff conflicts.
- Placement practicality for the intended building size and use.
- Future utility-readiness planning for office, studio, workshop, or climate-ready use.
What the Homeowner Must Verify or Coordinate
- 811 utility marking before ground disturbance.
- Private underground utilities, irrigation, pet fencing, lighting, septic, or drainage lines.
- HOA, architectural review, or neighborhood approval if applicable.
- Zoning, setback, easement, and property-line restrictions.
- Property-line uncertainty or neighbor/shared access concerns.
- Permits, local approvals, or trade-permit requirements.
- Removal of furniture, debris, stored materials, pet waste, toys, planters, or obstructions.
- Disclosure of known drainage, access, slope, or underground conditions.
A Better Site Plan Starts With Better Questions
These questions help separate a truly build-ready site from a location that only looks open.
| Question | Why It Matters | What to Listen For |
|---|---|---|
| Where does water go after a heavy rain? | Drainage affects the base, floor system, siding, doors, trim, maintenance, and long-term performance. | Discussion of low spots, downspouts, runoff, slope, and whether relocation or drainage work is needed. |
| Is the site reasonably level and firm? | Soft or uneven ground can affect foundation choice, leveling, access, and floor confidence. | Review of soil firmness, slope, gravel/base needs, and support strategy. |
| Can materials and tools reach the site safely? | Built-on-site construction still requires material access and work-zone clearance. | Discussion of gate width, narrow paths, steps, fences, trees, patios, slopes, and staging. |
| Have underground utilities been addressed? | Digging, trenching, grading, or pier work can create safety concerns if utilities are unknown. | 811 coordination plus disclosure of private irrigation, lighting, pet fencing, septic, drainage, pool, or propane lines. |
| Are there easements, setbacks, or HOA rules? | Open ground may not be legally or privately buildable ground. | Exact-address review, HOA documents, survey or plat review if needed, and clear homeowner responsibility. |
| Will the building need power, HVAC, plumbing, or finished interior later? | Future utilities and comfort systems can affect placement, trenching, access, foundation, and wall/floor planning. | Early coordination with comfort systems, utility readiness, and interior finish planning. |
| Is there enough room to work around the building? | The crew needs room for framing, siding, roofing, ladders, staging, and safe movement. | Work-zone clearance around all sides, not just the exact footprint. |
| What must be cleared before build day? | Debris, furniture, pet waste, stored items, toys, planters, and overgrown vegetation can delay work. | A clear pre-build responsibility list. |
What to Have Ready Before You Discuss Site Preparation
A little preparation helps the first site conversation become more useful and less speculative.
Property Basics
- Exact property address.
- Proposed building size if known.
- Intended use: storage, workshop, office, studio, pool house, garden building, or finished retreat-style structure.
- Preferred location and alternate location if available.
Photos
- Three to five photos of the proposed location.
- Photos after rain if the yard holds water.
- Photo of the access path from driveway to build site.
- Photos of gates, fences, slopes, retaining walls, or tight side yards.
Access Details
- Gate width or narrowest access point.
- Fence, step, slope, or retaining-wall conditions.
- Overhead branch or wire concerns.
- Parking or material-staging limitations.
Water and Grade
- Known low spots or wet areas.
- Downspout discharge locations.
- Driveway, patio, or neighboring runoff paths.
- Known soil softness, fill, or slope conditions.
Utilities
- Known private utilities or homeowner-installed lines.
- Irrigation, lighting, pet fence, septic, propane, pool, or drainage systems.
- Whether electrical, HVAC, plumbing, or future finish work is planned.
- Any known easements or no-build areas.
Approvals
- HOA or architectural review requirements.
- Setback or zoning questions already identified.
- Property-line uncertainty.
- Any permit, utility, or neighborhood restrictions already known.
Site Preparation Should Be Planned Before the Build Date
The Vintage Shed Company builds on site, which means the property is part of the construction plan. The site should be reviewed for water, access, ground conditions, utility awareness, foundation readiness, work-zone clearance, and long-term use before the building begins.
Common Questions About Site Preparation
Does the site need to be perfectly level before construction?
Not always, but the site must be reviewed for slope, drainage, foundation suitability, access, and long-term performance. Some sites may need leveling, gravel, drainage correction, or a different placement strategy before construction begins.
Can a backyard building be built where water collects?
That should be avoided whenever possible. Standing water increases moisture exposure and can create long-term problems around the foundation, floor system, and lower wall areas. Drainage should be reviewed before final placement.
Does built-on-site construction eliminate access concerns?
No. Built-on-site construction avoids the need to deliver a completed building into the yard, but the crew still needs a practical path for materials, tools, ladders, and safe work-zone setup.
Who is responsible for utility marking?
Utility marking and private-line disclosure should be handled before ground disturbance. Public utility marking may not identify private electric, irrigation, lighting, pet fencing, septic, drainage, propane, or homeowner-installed lines.
Where does geotextile stabilization fabric go?
Geotextile stabilization fabric goes over the prepared subgrade and below the gravel. It helps separate the soil from the stone layer and should not be confused with the 10 mil moisture barrier used above the finished stone.
Where does the 10 mil moisture barrier go?
When included in the foundation standard, the 10 mil moisture barrier is installed after the gravel pad is prepared and before the 6×6 foundation-grade beams are placed. It is a moisture-control layer, not the same thing as fabric under the stone.
Why are 6×6 foundation beams used?
6×6 pressure-treated beams create the primary structural bearing path for the floor system. They help support the joists, distribute load, and separate the floor frame from the prepared drainage base below.
Why is the prepared pad larger than the building?
A prepared pad larger than the exact building footprint helps with drainage, splash-back control, maintenance clearance, and cleaner long-term performance around the structure.
Should I send photos before a site conversation?
Yes. Photos of the proposed location, access route, gate, slope, wet areas, downspouts, fences, trees, and obstacles can make the first conversation much more useful.
Can site preparation affect the final price?
Yes. Slope, drainage, clearing, gravel, leveling, access limitations, utility conflicts, and foundation/base requirements can affect final scope and cost. The safest approach is to review the site before the project is priced as final.
Review the Site Before the Build Plan Becomes Final
The right building location, foundation plan, access path, drainage strategy, utility plan, and site-prep scope should be understood before construction begins.
A premium backyard building starts with the site because the site affects the building every day after the crew leaves.