Everything You Need
to Know About
Site Plans
I'm Engineer Wasim. My team has prepared over 10,000 permit-ready site plans across all 50 US states. These are the questions we get asked every day — answered directly, no fluff.
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Click any category to jump to those questions. All 39 questions answered from real permit experience.
The Basics
Foundational questions — what site plans are, what they're called, and what they include
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A site plan is a scaled, top-down drawing of your property showing your lot boundaries, all existing structures, and your proposed project — with all distances from property lines labeled. Building departments require it to verify that your project meets local zoning rules before issuing a permit.
Full explanation: What Is a Site Plan? →It is not a floor plan (interior layout), not a blueprint (construction details), and not a survey (legal boundary certification). It is a property-level drawing for permit submission.
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They are the same document. Different building departments use different terms. Some say "site plan," others say "plot plan," "property plan," or "permit drawing." All refer to the same scaled, top-down property drawing required for permit submission.
Site Plan vs Survey vs Plot Plan → -
A site plan shows the outside — where your building sits on the lot and how far it is from property lines. A floor plan shows the inside — the layout of rooms, walls, and doors within the building. They are entirely different documents showing entirely different information and are never interchangeable.
Floor Plans for Permits — What's Required → -
A property survey is a legal document prepared by a licensed land surveyor that certifies the exact location of your property boundaries. A site plan uses that boundary data to show where your project will be placed and whether it meets setback requirements.
Site Plan vs Survey — Full Explanation →For most residential building permits in the United States, a licensed survey is not required to prepare a site plan. We use GIS parcel data and county records — accepted by virtually every US building department.
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A permit-ready site plan includes all of the following. Missing even one element causes a correction notice and delays your permit.
Site Plan Drawing Requirements — Full Checklist →Property boundaries + dimensionsLegal description + Parcel ID / APNAll existing structures on the lotProposed project labeled + dimensionedAll 4 setback distancesImpervious surface calculationNorth arrowWritten + graphic scale barComplete title blockPool barrier notes (if applicable) -
The standard scale for residential permit site plans in the United States is 1 inch = 20 feet (1"=20'). Larger lots use 1"=30' or 1"=40'. Both a written scale label and a graphic scale bar are required.
Plans labeled "Not to Scale" are automatically rejected by every US building department without exception. This is one of the most common DIY rejection reasons.
Our Services
What we prepare, where we work, and who we serve
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We prepare every type of permit site plan:
- Residential site plans — pool, fence, shed, deck, home addition, garage, ADU, driveway
- Commercial site plans — tenant improvements, parking layouts, retail, office, warehouse
- PE-stamped plans — when the building department requires licensed engineer review
- ADU plans — detached, attached, garage conversion, all US states
- Full permit sets — site plan + elevation drawings + floor plans
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Yes. Site Plans Online USA prepares permit site plans for all 50 US states. We research your specific county's zoning requirements, setbacks, portal format, and submission standards for every order — no templates, no guessing.
Are There Site Plan Services for All 50 States? →For Florida specifically, we also operate Site Plans FL — a dedicated Florida brand with county-specific data for all 67 Florida counties, FEMA flood zones, HVHZ requirements, and F.S. 515.29 pool barrier compliance.
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Yes. Florida is one of our deepest markets. We operate a dedicated Florida brand — Site Plans FL — with county-level data for all 67 Florida counties. Every Florida plan includes:
- FEMA flood zone notation
- HVHZ notation for Miami-Dade and Broward
- F.S. 515.29 pool barrier compliance
- County portal formatting (Orange County FastTrack, BDFD, ePlan, etc.)
- 10-day correction notice response under F.S. 553.792
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Yes. We prepare California site plans for all 58 counties and all 482+ incorporated cities. We know California ADU law (SB 9, AB 2221), Coastal Zone requirements, VHFHSZ fire zone notation, and the portal submission requirements for LADBS, San Diego DSD, San Jose, and all major California markets.
California Site Plan Guide → -
Yes. Many of our clients are pool companies, fence contractors, permit expediters, and builders who send us multiple projects every month. We serve as a reliable drafting partner — fast turnaround, consistent formatting, and free revisions on building department corrections. Volume pricing is available for contractors with recurring needs.
Contact us to discuss contractor pricing →
Timing & Process
How long it takes, how it works, and what you need to get started
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Project Type Standard Delivery Fence, shed, basic driveway 12 hours Pool or spa permit 12–24 hours Deck or patio 12–24 hours Home addition, garage 24 hours ADU site plan 24–48 hours Commercial site plan 24–48 hours PE-stamped plan 2–5 business days Elevation drawings 24–48 hours Rush delivery is available for urgent permit deadlines. Contact us before ordering to confirm availability.
How Long Does a Site Plan Take Online? → -
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Submit Your Details
Send us your property address, project type, and any permit comments from your building department. Survey or plat map if you have one — not required.
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We Research Your Property
GIS parcel data, county zoning code, setbacks, special overlays (flood zone, fire zone, coastal), and your building department's submission format.
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We Draft Your Site Plan
Drawn to scale, formatted for your portal, all required elements for your project type.
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You Review
We send you the draft. You review and request any changes — typically turned around within a few hours.
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You Submit
Receive your permit-ready PDF and submit to your building department.
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Free Revisions if Needed
If the building department requests corrections, forward the notice. Updated within 12 hours at no extra charge.
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Required: your property address and project type. That is genuinely enough to start.
Helpful but not required:
- Permit checklist or comments from your building department
- Survey or plat map (improves accuracy)
- Project dimensions if you know them
- Photos of the property
You don't need a survey. You don't need CAD drawings. You don't need technical expertise.
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No. Everything is handled remotely. We use GIS parcel data, county records, and satellite imagery. No site visit, no appointment, no waiting for scheduling. You submit your details online or by email, we draft the plan, you receive a permit-ready PDF.
Permits & Requirements
Which projects need a site plan, and what varies by city and county
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Any project involving exterior changes to a property typically requires a site plan. The most common:
- Pool and spa
- Fence and wall
- Shed and accessory structure
- Deck and patio
- Home addition
- Garage addition (attached or detached)
- ADU and guest house
- Driveway expansion
- Solar panels (some jurisdictions)
- Commercial permits of any type
If your project changes the exterior footprint of your property or adds hard surface, assume a site plan is required.
Confirm with our Permit Requirements Checker → -
Yes — significantly. Setback distances, lot coverage limits, portal submission formats, file naming conventions, PE stamp requirements, and specific plan elements all vary by jurisdiction. This is why we research your specific city and county for every order rather than using a national template.
City-Compliant Site Plan Services → -
No — for most residential permits. We use GIS parcel data and county records, accepted by virtually every US building department for residential permit applications. If you have an existing survey, we incorporate it — it improves accuracy.
Site Plan vs Survey — Full Explanation →If your building department specifically states "licensed survey required" — that is a different requirement, but it is rare for standard residential permits.
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Setbacks are set at the zoning district level — not citywide — and vary by project type. We research the specific setback requirements for your parcel's zoning district on every order. Send us your address and project type and we'll confirm before starting.
What Is a Setback on a Site Plan? →
PE Stamps
When a Professional Engineer stamp is required and what's involved
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A PE stamped plan is a drawing that has been reviewed, signed, and officially sealed by a licensed Professional Engineer. The PE stamp means a licensed engineer has verified that the drawings meet applicable codes and professional engineering standards. The engineer's name, license number, and official state seal appear on the document.
PE Stamped Plans — Complete Guide → -
For most residential permits — pool, fence, shed, deck, basic addition, ADU — a PE stamp is not required. A professionally prepared non-certified site plan is accepted.
A PE stamp is typically required for:
- All commercial building permits
- Structural modifications to existing buildings
- Grading and drainage engineering
- Retaining walls over approximately 4 feet
- New home construction (structural drawings)
- Some residential additions above a size threshold (varies by county)
- Any project where the correction notice says "PE stamp required"
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PE-stamped plans typically take 2–5 business days. The PE must review the drawings for code compliance and engineering accuracy before stamping. Rush PE review is sometimes available — contact us to confirm. We coordinate PE review with licensed engineers in all 50 states.
Learn About Our PE Stamp Service → -
Yes. A PE stamp is only valid in the state where the PE holds an active license. We coordinate PE review accordingly — we work with licensed engineers in all 50 states, so regardless of your project location we handle the state-specific stamp requirement.
Cost & Pricing
What site plans cost, what's included, and why professional prep is worth it
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Cost depends on project type, complexity, and whether a PE stamp is required. Simple residential projects (fence, shed, basic driveway) start from $79. Pool permits and ADUs are mid-range. Commercial projects and PE-stamped plans are higher.
Use our Cost Calculator for an instant estimate →
View Packages → -
Every Site Plans Online USA order includes:
GIS-verified property dataCounty-specific setback researchAll required permit elementsCorrect written + graphic scalePortal-formatted PDFFree revisions if rejected -
Yes. If your building department sends back a correction notice, we address every item within 12 hours at no extra charge. This applies to the same project scope — if you want to add a completely new project element not in the original order, we'll discuss any adjustment.
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The cost of a professional site plan is typically far less than the cost of a rejected application. A correction notice means:
- Resubmission delay — 2–6 weeks for another review cycle in most cities
- Contractor rescheduling costs if crews are waiting
- Resubmission fees in some jurisdictions
- Another full round of stress
DIY vs Professional Site Plan — Honest Comparison →Our 99% first-submission approval rate means the plan typically passes review on the first try.
Rejections & Corrections
What to do when a permit is rejected and the top reasons plans fail
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Send us your correction notice — the list of items the building department wants fixed. We review every item and prepare corrected drawings within 12 hours. Most corrections involve missing setback dimensions, scale issues, impervious surface calculations, or pool barrier compliance notes — all straightforward fixes.
Free Permit Rejection Analyzer Tool → -
Florida: Under F.S. 553.792 (HB 267, effective January 2025), you have 10 business days to respond. Miss the deadline and the application may be denied — requiring you to restart and pay fees again.
Other states: Typically 30–90 days, but varies by jurisdiction. Check your correction notice for the specific deadline. Don't wait regardless — every day of delay is a delayed permit.
Site Plan Review Process → -
The five most common rejection reasons:
- Missing setback dimensions — all four distances from proposed structure to property lines must be labeled
- Not drawn to scale — "not to scale" is automatically rejected by every US building department
- Existing structures missing — reviewers check satellite imagery; every structure must appear
- Impervious surface not calculated — required for pools, decks, additions, driveways
- PE stamp missing — required for most commercial permits
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Yes. We fix and correct site plans regardless of who originally prepared them. Send us the original plan and the correction notice. We identify what needs to change and prepare corrected drawings. This is one of the most common situations we handle — rejected DIY plans, rejected contractor plans, and plans from other services.
City Plan Red Markups — How to Respond →
ADU Questions
Accessory Dwelling Units — site plans, setbacks, and feasibility checks
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An ADU (Accessory Dwelling Unit) is a secondary residential unit on the same lot as a primary home — a backyard cottage, garage conversion, in-law suite, or detached guest house. An ADU site plan is required as part of the building permit application for any ADU project.
The ADU site plan shows: ADU location and setbacks, parking space location, utility connections, lot coverage, and access route from the street.
ADU Site Plan Guide → -
In California, state law (AB 2221) sets maximum setbacks for most detached ADUs at 4 feet from the rear and side property lines — overriding stricter local rules in most cases. Other states vary significantly.
We research the specific ADU setback rules for your city or county for every ADU plan we prepare.
California Site Plan Guide → -
Yes. Use our free ADU Feasibility Checker to check basic zoning eligibility, lot capacity, and key variables for your property before ordering. For a deeper analysis, read our ADU Feasibility Study Guide.
Pool & Residential Permits
Pool barriers, fence permits, and shed requirements
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A pool permit site plan includes all standard elements plus:
- Pool dimensions and water edge location
- All setbacks measured from the water edge to every property line
- Safety barrier location and height (California: 60 inches minimum; most other states: 48 inches)
- Gate details — self-closing, self-latching, outward-swinging, latch at 54 inches
- Equipment pad location
- Impervious surface calculation including pool deck
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In most US jurisdictions, yes — any fence that requires a permit also requires a site plan. Fence permit site plans show: fence line location, fence height, gate locations, and corner lot sight triangle if applicable. If the fence serves as a pool safety barrier, additional barrier compliance notation is required.
Fence Permit Site Plan Guide → -
Most sheds over 100–200 square feet (the threshold varies by jurisdiction) require a building permit, and that permit requires a site plan. The site plan shows shed placement, distance from all property lines, distance from the main house, and foundation type.
Shed Permit Site Plan Guide →
Commercial Questions
Commercial permits, PE stamps for business projects, and planning commission submissions
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Commercial site plans include everything in a residential plan plus:
- Complete parking layout with space count and ADA accessible spaces
- Ingress and egress access points
- Pedestrian access routes
- Fire lane access
- Drainage notes
- PE stamp
The level of detail is significantly higher than residential.
Commercial Site Plans for Permits → -
Yes — for virtually all commercial construction in the United States. Most jurisdictions require a licensed Professional Engineer to review and seal commercial drawings before the permit can be issued. Submitting a commercial permit application without a PE stamp means the application cannot be processed.
Learn About Our PE Stamp Service → -
Yes. Planning commission applications require a more detailed site plan than a standard building permit — showing parking, landscaping, circulation, building heights, and relationship to surrounding properties. We prepare both building permit site plans and planning commission entitlement site plans.
Commercial Site Plan Planning Commission Review →
Residential, Commercial & PE-Stamped Plans
Every plan is drawn to scale, researched for your county, and formatted for your building department portal — starting from just $79.
Residential Site Plans
Pool, fence, deck, shed, addition, ADU, garage — any residential project that needs a permit. GIS-verified, county-formatted, delivered in 12–24 hours.
View Residential Plans →
Commercial Site Plans
Full commercial permit packages including parking layout, ADA spaces, fire lanes, drainage notes, and PE stamp for jurisdictions that require engineer sign-off.
View Commercial Plans →PE-Stamped Plans
Licensed PE in your state. Required for commercial, structural, and some residential projects. Digitally signed and sealed. All 50 states.
Learn About PE Stamp →
I'm Engineer Wasim,
Founder of Site Plans Online USA
These FAQs come from real experience — 10,000+ permit-ready site plans across all 50 US states, for homeowners, contractors, pool companies, and commercial developers.
If your question isn't answered here, contact us directly. We respond within 2 hours and provide a no-obligation quote based on your specific project and jurisdiction.
Free Tools While You Research
Use these free tools to check requirements, estimate costs, and understand correction notices before contacting us.
Cost Calculator
Instant price estimate based on your project type
Requirements Checker
Confirm what your project needs before submitting
Rejection Analyzer
Understand your correction notice instantly
Site Plan Checker
Review your existing plan before submitting
ADU Feasibility Checker
Check ADU viability for your property
Related Expert Guides
Deep-dive guides for every permit type, jurisdiction, and requirement — from the same engineering team.
Still Have a Question?
If your question isn't answered above, our team responds within 2 hours. Send us your property address, project type, and any permit comments you've received — we'll confirm exactly what you need and provide a no-obligation quote.