ADU & ADDITION SITE PLANS
ADU & Addition Site Plans
Professional ADU and addition site plans showing the proposed structure location, dimensions, setbacks, access, utilities when supplied, and key property relationships for permit review.
CODE-COMPLIANT DRAWINGS
Permit-Ready ADU & Addition Plans for Any Property
A permit reviewer needs to understand how the proposed ADU or addition fits the property as a whole. The site plan should establish the proposed footprint, dimensions, setbacks, access, relationship to the existing house, and other relevant site conditions.
We build the drawing around the information available for your property and the specific ADU or addition scope agreed before drafting starts.
✓ Property boundary information from available source records
✓ Existing house and accessory-structure footprints
✓ Proposed ADU or addition footprint and dimensions
✓ Required front, side, and rear setback relationships
✓ Access, driveway, easement, and utility information when supplied
✓ Existing patios, pools, sheds, and other relevant improvements
✓ North arrow, labels, notes, and drawing scale
✓ Digital PDF files prepared for your permit workflow
WHAT PERMIT REVIEWERS NEED TO SEE
Make the ADU or Addition Easy to Review
A clear site plan should let the reviewer understand the proposed ADU or addition in relation to the existing house, property lines, setbacks, access, easements, utilities, and other site features without having to interpret a rough sketch.
One Drawing, Clear Property Relationships
The site plan brings the proposed ADU or addition, existing structures, access, yard areas, setbacks, and property relationships into one coordinated drawing for permit review.
Proposed Footprint & Dimensions
Show the proposed ADU or addition in relation to the existing house and property, including the overall footprint and dimensions supplied for the project.
Setbacks & Property Relationships
Make the relationship to property lines, existing structures, easements, and required yard setbacks easy to understand.
Access, Utilities & Easements
Show driveways, walkways, access routes, utilities, and easements when they are part of the supplied scope because these features can affect permit review.
Existing Site Features
Include relevant structures, patios, decks, driveways, pools, sheds, easements, utilities, and other features that may affect how the ADU or addition is reviewed.
Important: A site plan documents the project’s location on the property. Your permit office may separately require structural framing plans, footing details, elevations, engineering, or other construction documents.
BEFORE DRAFTING STARTS
What to Send for a More Accurate ADU or Addition Site Plan
The better the source information, the more efficiently we can define the drawing scope. You do not need every item below to contact us, but these are the most useful ADU/addition inputs when available.
✓ Property address and project description
✓ Proposed ADU or addition size and location
✓ Approximate dimensions and distance from existing structures
✓ Access, driveway, utility, or easement information when applicable
✓ Photos of the project area
✓ Existing survey or plot plan, if you have one
✓ Architectural sketch or floor plan, if available
✓ Written city/county checklist or reviewer comments
SCOPE CLARITY
When a Site Plan Alone May Not Be Enough
ADU and addition permits can involve both site and building review. Our site-plan service focuses on documenting the proposed structure location and its relationship to the property.
Your jurisdiction may separately require architectural plans, structural plans, engineering, energy-compliance documents, utility plans, grading or drainage information, or certified survey data. If written permit requirements call for additional professional documentation, we’ll flag that scope instead of presenting a drafted site plan as a substitute.
Sample ADU & Addition Site Plans
These examples show how different ADU and addition projects can be documented for permit review. The exact drawing contents depend on your property, available records, project configuration, and local requirements.
Detached ADU Site Plan
Property boundaries, existing house, detached ADU location, dimensions, access, and setback information.
Home Addition Site Plan
A detailed layout showing the proposed addition, existing house, setbacks, access, and relevant property relationships.
ADU Setback & Access Plan
Clear visualization of the proposed ADU, property lines, existing structures, access, utilities or easements, and required setbacks.
OUR PROCESS
From Property Details to a Permit-Ready ADU Site Plan
A straightforward workflow keeps the project moving without unnecessary back-and-forth.
Send the Property & ADU Details
Share the address, proposed ADU or addition size and location, access, photos, sketch or architectural plan, survey if available, and any permit comments.
We Confirm the Drafting Scope
We review the available information and identify what can be shown clearly on the ADU or addition site plan before drafting begins.
Review the Draft
You review the proposed ADU or addition layout and send corrections or written jurisdiction comments that fall within the agreed scope.
Receive the Final Site Plan
We deliver the final PDF drawing for your permit package, contractor, HOA, or project records.
Why Choose City Permit Plans?
ADU and addition permits can stall when the proposed footprint, setbacks, access, easements, or property relationships are unclear. Our role is to make the site-plan portion of the application easier to review.
✓ ADU and addition site-plan drafting
✓ Property and setback relationships shown clearly
✓ Access, easement, and utility relationships incorporated when part of the supplied scope
✓ Typical 24–48 hour turnaround for many standard projects
✓ Digital PDF delivery
✓ Revision review for written permit comments
✓ Clear distinction between site-plan drafting and architectural/engineering documents
Who We Help
We work with homeowners, contractors, designers, and property teams on ADUs, additions, conversions, and residential expansion projects.
Detached ADUs, attached ADUs, room additions, garage conversions, backyard cottages, and residential expansion permits.
Reliable ADU/addition site-plan drafting support for active jobs, permit packages, design coordination, and client approvals.
Site-plan support for managed properties, multifamily projects, HOAs, investors, and residential development teams.
Frequently Asked Questions
Common questions about ADU and addition site plans.
READY TO START YOUR ADU OR ADDITION SITE PLAN?
Send Us Your ADU or Addition Project Details
Share the property address, proposed ADU or addition size and location, access details, photos, sketches or architectural plans, and any permit comments you already have. We’ll review the information and confirm the drafting scope before work begins.
Typical standard-project turnaround: 24–48 hours after the required information is available.
Get an ADU Site Plan Quote
Tell us about your property and ADU or addition project. We’ll review the proposed footprint, dimensions, access, setbacks, easements, and required information.
Your information is used only to review your project request.