Before designing an accessory dwelling unit, confirm site feasibility, access, utilities, zoning constraints, intended use, and a realistic project budget.
An ADU is a small building project with many full-size decisions. Setbacks, grading, sewer routing, electrical capacity, fire access, privacy, parking, and construction logistics can shape the design before finishes are considered.
San Diego ADU Planning Checklist for Homeowners: an expert checklist
- Verify parcel and jurisdiction requirements
- Measure access, setbacks, and usable site area
- Locate existing utility connections and capacity
- Define unit size, occupants, and accessibility goals
- Plan permitting, construction access, and neighbor impacts
A feasibility-first approach reduces redesign. Concept drawings are most useful after basic site information is collected and the homeowner understands which constraints require professional confirmation.
How to make the next decision
Start with documented conditions rather than assumptions. Completed Home Improvements provides information and services relevant to San Diego ADU planning checklist; the correct scope still depends on the property, equipment, documents, or project conditions involved.
Review the related guidance on adu builder in san diego and complete home remodeling. These pages explain the available service context before you request a site-specific recommendation.
Questions to ask a provider
- What information do you need before recommending a scope?
- Which assumptions still need field verification?
- What is included, excluded, and documented?
- What conditions would change the recommendation?
Clear answers help customers compare scope and process instead of choosing from a headline alone. Keep records, photos, plans, model numbers, or ownership documents that are relevant to the service.
Frequently asked questions
How large can an ADU be?
Allowable size depends on the property, jurisdiction, ADU type, and current regulations. Verify current local requirements before design.
Can an ADU share utilities with the main house?
Possibly, but capacity, metering, routing, and local requirements must be evaluated for the specific property.
How early should a budget be established?
Set a preliminary budget during feasibility and update it as drawings, engineering, selections, and site conditions become clearer.
What site issue is commonly overlooked?
Construction access is easy to underestimate. Crews need a safe way to move materials and equipment without damaging occupied areas.
Request a business-specific review
Use the Completed Home Improvements contact or scheduling page to describe your situation and confirm the appropriate next step.
