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Build your ADU plan

Five quick steps — city, ADU type, size, budget, goal. Everything you answer flows into one personalized report: your city's rules, honest cost and rent ranges, financing math, timeline, and the questions to ask contractors. Print it, save it as a PDF, or carry it straight into a free property review — without retyping anything.

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Your ADU Plan
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Your Plan at a Glance

Local Rules

Cost Picture

Planning ranges only — general Southern California market estimates, not quotes or bids. Your city's fees, your lot's conditions and your finish choices move these numbers; the soft-cost categories sit on top of construction. A licensed contractor's written bid is the real number.

Financing

Timeline Shape

Phases overlap and durations vary by city and project — see the full timeline guide. State law requires cities to act on a complete ADU application within 60 days; permits using a pre-approved plan must be acted on within 30.

Things to Check Early

Questions for Contractors

"What about this site concerns you?" — every honest answer names something.
"What's NOT included in your bid?" — exclusions are where budgets die.
"Who runs my job day to day, and how many projects do they carry?"
"How do you handle changes once we've started?" — you want a written process.
Full prep list: our walkthrough guide and red-flags checklist.

Suggested Next Steps

Prepared by United Build Partners — a homeowner-focused ADU advisory and contractor-introduction service, not a licensed contractor, architect, engineer, lender or real estate broker. This report is generated from your answers plus published planning ranges and our researched rules data; it is not a quote, appraisal, feasibility determination, or legal advice, and it can't tell you what your specific parcel qualifies for. Cost, rent and value figures are illustrative market estimates. Confirm rules with your city and pricing with licensed professionals. Nothing you entered here was stored or transmitted — this report exists only in your browser unless you save it.

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