Plan book
Junior ADU plan book
Six layouts inside your home or attached garage, 210 to 490 sq ft, with the 2026 rules.
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Free document libraryPlans, rules and guides
Sample ADU floor plans by shape, size and number of rooms, plus guides to Los Angeles rules, costs and permits. Free, with an optional review of your project by our team.
Category
Rooms
New · free planning kit
Plan your ADU · cut-out kit
Rulers, grids and furniture at true scale (1/4″, 1/8″, 1/2″) to check that everything fits before you build.
Scale rulersGridsOver 70 pieces to cutCode clearances
Plan book
Tiny ADU plan book
Six small homes from 150 to 336 sq ft, built on site, never prefab.
Plan book
Studio ADU plan book
Six one-room homes from 360 to 500 sq ft: square, L-shaped, alcove or garage.
Plan book
One-bedroom ADU plan book
Six one-bedroom homes from 450 to 750 sq ft, with porch, den or kitchen island.
Plan book
Two-bedroom ADU plan book
Six family homes from 660 to 1,200 sq ft, with one or two bathrooms.
Plan book
Workspace ADU plan book
Six backyard offices and studios that stay legal homes, 234 to 572 sq ft.
Plan book
Garage conversion plan book
Six layouts for standard one, two and three-car garages, attached or detached.
Plan book
Square, L and U ADU plan book
Six plans to see how the shape of an ADU changes its cost, light and privacy.
Plan book
Two-story ADU plan book
Four plans that build up instead of out, including a one-bedroom above a garage.
Site plans
Two ADUs on one lot (2027)
Six site plans for the new 2027 law: two detached ADUs on standard, wide, deep and corner lots.
Rules
Los Angeles ADU rules · 2026 summary
What state law guarantees, what the City of Los Angeles checks and the permit path, in two pages.
Worksheet
ADU budget worksheet
Every line of an ADU budget, to compare quotes on the same basis.
Checklist
Lot feasibility checklist
Twenty points to check on your property in an afternoon.
Checklist
Before your visit
Photos, documents and questions to prepare for the free visit.
Guide
15 questions to ask any ADU builder
License, insurance, price, payments, permits and warranty: what to ask before you sign.
Glossary
ADU glossary English–Spanish
The 49 words of the city, the plans and the job site, side by side.
Free project review. With any document, you can ask our team to review your property and your plans. Requesting documents or a review means you agree to receive a call from our team to go over your request.
Find out what your lot can hold.
Send your address. We check zoning and site constraints and reply with a clear next step.
Service areas
Serving homeowners across Los Angeles
Los Angeles, the South Bay and Orange County, within about 40 miles of Paramount. Farther on request.
Service areas
ADU rules, city by city
Permits, fire and coastal zones, pre-approved plans: see what applies in the 36 cities we serve.
Central Los AngelesSan Fernando ValleyThousand OaksSimi ValleyParamountWest AdamsMid-CityCulver CityLong BeachDowneyWhittierNorwalkTorranceInglewoodComptonCarsonAnaheimSanta AnaIrvineHuntington BeachPasadenaGlendaleBurbankRialto (on request)Garden GroveOrangeFullertonCosta MesaNewport BeachTustinSherman OaksEncinoVan NuysWoodland HillsNorthridgeCalabasas