The first question is not whether the drawing looks impressive. It is whether the reviewer can understand and measure it.

When a residential permit application includes a site plan, the reviewer uses it to understand where the project will sit on the property.

The drawing may be reviewed alongside floor plans, elevations, structural details, application forms and supporting documents. However, the site plan often provides the clearest overview of the lot and the relationship between the existing property and proposed work.

A reviewer may quickly ask:

• Is the correct property shown?
• What currently exists on the lot?
• What is being proposed?
• How large is the project?
• Where is it located?
• How far is it from the property boundaries?
• Does it overlap a known easement?
• Can the property still be accessed and used safely?
• Does the site plan agree with the other permit drawings?

When the drawing answers those questions clearly, the reviewer can move into the more detailed parts of the application. When those answers are missing or difficult to find, a correction request becomes more likely.

Why Permit Reviewers Start With the Property Layout

The site plan provides an overhead view of the entire property.

Unlike a floor plan, which focuses on the interior of a building, the site plan shows how the project fits within the legal lot.

It may identify:

• Property boundaries
• Lot dimensions
• The existing house
• Garages and accessory structures
• Decks, patios and swimming pools
• Driveways and parking areas
• Proposed construction
• Setback dimensions
• Known easements
• Streets and alleys
• Drainage or grading information when required

This allows the reviewer to evaluate the project within the context of the complete property rather than as an isolated structure.

A well-organized drawing can make the first review easier. It does not guarantee approval, but it reduces the need for the reviewer to interpret incomplete or disconnected information.

The Reviewer’s First-Pass Site Plan Check

There is no universal review sequence used by every city or county. The order can change according to the project, department and local permit process.

A common first-pass review considers the following items.

1. Correct Property and Project Information

Before reviewing the project layout, the reviewer must be able to identify the property and application.

The site plan may need to include:

• Complete property address
• City, state and ZIP code
• Parcel identification number when required
• Lot and block information when available
• Subdivision name when relevant
• Project title
• Short project description
• Preparation or revision date

The address and project description should agree with the permit application.

A drawing labelled “proposed shed” can create confusion when the application describes a detached garage. Likewise, a street-number error can cause the plan to be associated with the wrong property.

2. Complete Property Boundaries

One of the most important first-pass checks is whether the complete lot is shown.

The site plan should normally identify:

• Front property line
• Both side property lines
• Rear property line
• Street-side boundary on a corner lot
• Angled or curved boundary sections
• Available lot-line dimensions
• Streets and alleys adjoining the property

Showing only the backyard or immediate project area may not provide enough information to understand the full lot.

The complete boundary helps the reviewer evaluate:

• Lot shape
• Project orientation
• Required yards
• Corner-lot conditions
• Access
• Lot coverage
• Relationship to public streets

A fence, hedge, wall or edge of lawn should not automatically be treated as the legal property boundary.

When boundary information is uncertain or certified accuracy is required, the reviewing authority may request a licensed survey.

3. Existing Buildings and Site Improvements

The reviewer needs to understand what already exists before evaluating the proposed change.

Relevant existing features can include:

• Main dwelling
• Attached garage
• Detached garage
• Carport
• Sheds and accessory structures
• Decks, patios and porches
• Patio covers and pergolas
• Swimming pools and spas
• Pool equipment
• Driveways and parking areas
• Walkways
• Retaining walls
• Fences and gates when relevant

Existing structures can affect:

• Building separation
• Lot coverage
• Fire access
• Parking
• Available yard area
• Placement of the proposed project

Leaving an existing garage, shed or deck off the plan can make the available building area appear larger than it really is.

4. Proposed Work Clearly Identified

The reviewer should be able to distinguish the proposed project from existing construction immediately.

Proposed work can be identified through:

• A clear “PROPOSED” label
• A distinct hatch pattern
• A heavier outline
• A different line style
• Selective shading
• An existing-and-proposed legend

The plan should identify the complete proposed footprint, including relevant:

• Walls
• Supporting posts
• Stairs
• Landings
• Deck areas
• Roof projections
• Equipment pads
• New paving

Structures proposed for demolition or relocation should also be labelled.

A proposed addition should not look identical to the existing house. A new shed should not be mistaken for an existing accessory building.

5. Project Dimensions

The site plan should show the proposed project’s overall length and width.

For an irregular project, enough dimensions should be included to define the complete shape.

Reviewers may compare those measurements with:

• The permit application
• Floor plans
• Elevations
• Structural drawings
• Manufacturer plans
• Contractor documents

A garage shown as 24 feet by 30 feet on the floor plan should not appear as 24 feet by 28 feet on the site plan.

Conflicting measurements make it unclear which version represents the project being reviewed.

6. Setback Distances

Setbacks are among the most important site-plan measurements because they help the reviewer evaluate structure placement.

The plan may need to show the shortest relevant distance from the proposed work to:

• Front property line
• Both side property lines
• Rear property line
• Street-side boundary on a corner lot
• The existing house
• Other accessory structures
• Known easements

The measurement point can vary by project and local code. A setback may be measured from:

• Exterior wall
• Foundation
• Supporting post
• Roof edge
• Deck platform
• Pool waterline or shell

The required distance can also depend on:

• Zoning district
• Structure type
• Building height
• Lot configuration
• Corner-lot status
• Overlay district
• Recorded building lines

Read Setbacks and Zoning: How to Find the Rules for Your Property for a detailed explanation.

7. Building Separation

The distance between buildings can be important for zoning, fire safety, access and construction review.

Building-separation dimensions may be required between:

• A detached garage and the house
• A shed and the dwelling
• An accessory dwelling unit and another structure
• A swimming pool and the house
• A deck and an accessory building
• Two separate proposed structures

The reviewer may need to know the shortest measurable distance rather than an approximate visual relationship.

Existing buildings should therefore be placed accurately enough for the required separation dimensions to be shown clearly.

8. Easements and Other Restricted Areas

A project can satisfy its normal zoning setbacks and still conflict with a recorded easement.

Common easements include:

• Utility easements
• Drainage easements
• Sewer easements
• Access easements
• Shared-driveway easements
• Stormwater easements
• Conservation easements

When known, the plan should show the easement’s:

• Location
• Width
• Purpose
• Relationship to the proposed project

Other restricted areas may include:

• Public rights of way
• Recorded building lines
• Floodplain boundaries
• Drainage channels
• Septic drainfields
• Protected-tree areas
• Environmentally sensitive buffers

The reviewer may request supporting records, a licensed survey or approval from the easement holder when a conflict is possible.

9. Driveways, Parking and Property Access

Access becomes especially important for garages, carports, additions, accessory dwelling units, driveway projects and detached structures.

Reviewers may check:

• Existing driveway location
• Proposed driveway changes
• Driveway width
• Curb cuts or vehicle crossovers
• Garage or carport access
• Parking-space location
• Parking-space dimensions
• Alley access
• Gates
• Pedestrian walkways
• Access to the proposed structure

The site plan should show whether the proposed project removes, blocks or changes existing access.

For example, an addition placed over part of a driveway may affect required parking or vehicle access. A new garage that cannot be reached from the street or alley may require redesign.

10. Lot Coverage and Impervious Area

Meeting the setbacks does not automatically mean the project complies with all zoning or site-development requirements.

Some jurisdictions regulate how much of the lot can be covered by buildings or impervious surfaces.

Coverage calculations can include:

• Main house
• Additions
• Attached and detached garages
• Sheds
• Covered patios
• Decks
• Swimming pools
• Driveways
• Parking areas
• Walkways
• Other paved surfaces

The exact definition varies by jurisdiction.

A structure can fit comfortably within the setback lines and still cause the property to exceed its maximum building or impervious coverage.

When coverage is required, the site plan may need to show:

• Total lot area
• Existing covered area
• Proposed additional area
• Total proposed coverage
• Maximum allowed coverage
• Percentage calculations

11. Drainage, Grading and Ground Conditions

Drainage and grading are not part of every residential site-plan review.

They become more important when the project:

• Changes existing ground elevations
• Adds substantial paving
• Creates a large roof area
• Includes a retaining wall
• Is located on a sloping property
• Affects a drainage easement
• Is within or near a floodplain
• Changes the direction of surface runoff

The reviewer may look for:

• Existing ground elevations
• Proposed elevations
• Contour lines
• Drainage arrows
• Cut-and-fill areas
• Retaining walls
• Stormwater facilities
• Downspout discharge
• Overland-flow paths

A basic drafted site plan does not replace drainage calculations, grading design or civil engineering where those services are required.

12. North Arrow, Scale and Measurability

A reviewer should be able to orient and measure the drawing.

The site plan commonly includes:

• North arrow
• Written drawing scale
• Graphic scale bar when useful
• Readable dimensions
• Clearly identified units
• Street names

A stated scale becomes less useful when the drawing is resized during printing or electronic submission. A graphic scale bar can remain helpful after resizing.

The selected scale should allow:

• The complete property to fit on the sheet
• Dimensions to remain readable
• Labels to avoid overlapping
• Setbacks to be shown clearly
• Project details to remain visible

A blurry screenshot or low-resolution image is not a good substitute for a clean PDF drawing.

13. Existing and Proposed Labels

Reviewers should not have to infer which features are changing.

Use clear descriptions such as:

• Existing dwelling
• Existing detached garage
• Proposed addition
• Proposed deck
• Proposed driveway widening
• Existing shed to be removed
• Existing concrete to remain
• Proposed pool equipment

A simple legend can explain:

• Solid outlines
• Dashed lines
• Hatch patterns
• Demolition areas
• Easements
• Property boundaries
• Setback lines

The same graphic convention should be used consistently throughout the drawing.

14. Agreement With the Other Permit Documents

The site plan does not stand alone.

Reviewers may compare it with:

• Permit application
• Project description
• Floor plans
• Elevations
• Roof plan
• Structural drawings
• Manufacturer plans
• Energy documents
• Drainage or grading plans

Common conflicts include:

• Different project dimensions on different sheets
• A door or stair shown on one plan but not another
• A detached garage labelled as attached elsewhere
• A deck appearing larger on the site plan
• A structure proposed for removal still shown as existing
• Different project descriptions across the application

Reviewers need to know which drawing controls. Conflicting documents commonly lead to clarification or correction requests.

What Reviewers May Check After the First Pass

Once the basic site layout is understandable, review can move to more detailed requirements.

Depending on the project, those issues may include:

• Structure height
• Floor-area limits
• Fire separation
• Construction type
• Foundation design
• Structural framing
• Pool barriers
• Tree protection
• Floodplain compliance
• Septic and well separation
• Stormwater management
• Energy-code requirements
• Accessibility
• Historic-district review
• Environmental overlays

A clear first-pass site plan does not remove these requirements. It simply provides an understandable foundation for the remaining review.

What Causes an Immediate Correction Request?

A permit application can receive an early correction notice when the reviewer cannot identify or verify fundamental site information.

Common causes include:

• The wrong property address
• The complete lot is not shown
• Property boundaries are missing
• Lot dimensions are missing
• The existing house is incomplete
• Accessory structures are omitted
• Proposed work is not clearly identified
• Project dimensions are missing
• Setback dimensions are missing
• Building separation is unclear
• Known easements are omitted
• Driveway or parking information is incomplete
• No north arrow is shown
• No drawing scale is provided
• The PDF is blurry or difficult to read
• The site plan conflicts with the other drawings

Read Why Site Plans Get Rejected for Permits for a more complete discussion of correction notices.

How to Make a Site Plan Easier to Review

Good site-plan design is less about decoration and more about communication.

A strong drawing normally:

• Shows the complete property
• Uses consistent line weights
• Separates existing and proposed work
• Places dimensions near the features they measure
• Avoids overlapping labels
• Keeps setback dimensions easy to locate
• Uses readable text
• Includes a simple legend
• Shows a north arrow and scale
• Matches the remaining permit documents

The reviewer should not need to search through the drawing to identify the project.

For guidance on drawing presentation, read Site Plan Design for Permit Applications .

Projects Commonly Reviewed Through a Site Plan

Local Site Plan Review Guides

Although reviewers commonly check the same core information, the exact permit requirements and review process can differ by city. Use the guides below for more location-specific information about residential site plans.

Site Plan First-Pass Review Checklist

For the expanded version, see our complete Site Plan Checklist for Permit Approval .

How USA Site Plans Can Help

USA Site Plans prepares residential drawings for property projects throughout the United States, excluding California.

Plans can be prepared for:

• Deck permits
• Pool permits
• Shed permits
• Garage permits
• Carport permits
• Fence permits
• Driveway permits
• Home additions
• Patio covers
• Accessory dwelling units
• Other exterior residential work

The plan can use:

• An existing survey
• A recorded subdivision plat
• Property records
• Aerial imagery
• Customer-supplied measurements
• Photographs
• Hand sketches
• Contractor or manufacturer drawings

The usefulness and accuracy of the drawing depend on the quality of the property and project information supplied.

Frequently Asked Questions

What do permit reviewers usually check first on a site plan?

Reviewers commonly begin with the property boundaries, existing structures, proposed work, project dimensions, setback distances, known easements, access and overall drawing readability.

Do all permit reviewers follow the same order?

No. The review sequence varies by jurisdiction, department and project type. The same core site information is commonly needed even when the order differs.

Why are setbacks checked early?

Setbacks help determine whether the project can be placed in the proposed location. Missing setback dimensions may prevent the reviewer from completing zoning review.

Why must the complete property be shown?

The complete lot gives context for every boundary, structure, access area, easement and project location. Showing only the immediate work area can hide important site conditions.

Should existing sheds and garages be included?

Yes, when relevant. Existing accessory structures can affect building separation, lot coverage and the amount of space available for the proposed project.

Do easements need to be shown?

Known easements should be shown when they affect the property or project area. A proposed structure can comply with setbacks and still conflict with an easement.

Do I need drainage information?

Not for every project. Drainage or grading information may be required when the work changes ground elevations, adds substantial impervious area, affects a slope or involves a floodplain or drainage feature.

Can a site plan be prepared online?

Many straightforward residential plans can be prepared remotely using an existing survey or plat, property records, aerial imagery, photographs and customer-supplied measurements.

Are USA Site Plans drawings stamped?

No. USA Site Plans provides drafting services. Licensed surveying, architecture, structural engineering, civil engineering and professional seals must be obtained separately when required.

Will a clear site plan guarantee permit approval?

No. The reviewing authority controls approval and may request revisions, a licensed survey, engineering or other supporting documents. A clear plan can reduce avoidable confusion but cannot guarantee an outcome.

Final Thoughts

The site plan is one of the clearest ways for a permit reviewer to understand a residential project.

The first review commonly focuses on the property boundaries, existing structures, proposed work, project dimensions, setbacks, easements, access and drawing readability.

When these details are complete and consistent, the reviewer can evaluate the project without reconstructing the property layout from incomplete notes or conflicting drawings.

A clear site plan cannot guarantee permit approval. It can, however, reduce avoidable questions caused by missing, unclear or inconsistent site information.

Disclaimer: This article provides general educational information and is not legal, surveying, engineering, architectural, zoning or permitting advice. Permit-review procedures and site-plan requirements vary by jurisdiction, property and project type. A drafted site plan does not establish legal property boundaries or replace a licensed survey, engineering or other professionally certified documentation when required. Confirm current requirements with the authority reviewing your application.