City Guides
ADU Feasibility in Los Angeles — What Your Property Needs to Clear
88 incorporated cities, fire zones, zoning overlays, and one of the strongest rental markets in the US. What every LA homeowner needs to know before spending $2,000 on an architect.
ADU Feasibility in San Diego — Coastal Overlay, Fire Zones, and the Standard Plan Program
San Diego's Coastal Overlay Zone, FHSZ fire screening, and the Standard Plan Program that can cut permit time to 45 days — zoning is not looked up automatically for San Diego addresses at present. Everything San Diego homeowners need before hiring a designer.
ADU Feasibility in Orange County — 34 Cities, One Report
OC spans 34 cities with distinct ADU rules — from Irvine HOA overlays to Huntington Beach coastal zone to Anaheim Hills fire hazard. Fire zone, flood and coastal checks in one report; zoning is not looked up automatically for Orange County addresses at present.
ADU Feasibility in the Bay Area — SF, Oakland, Berkeley, and the Peninsula
Six counties, dozens of jurisdictions, East Bay Hills fire exposure, and rents up to $3,500/mo. City-by-city zoning breakdown for SF, Oakland, Berkeley, Marin, and the Peninsula with live ADUVerify data sourcing.
ADU Feasibility in San Jose — Silicon Valley's Strongest ADU Market
Tech worker demand, large single-family lots from the 1960s–80s, and rents up to $4,200/mo make San Jose one of California's best ADU markets. Includes CAL FIRE foothills screening. San José’s zoning system currently blocks automated lookup, so confirm your zoning with San Jose Planning.
ADU Feasibility in Sacramento: Capital Region Guide for 2026
Sacramento ADU Accelerator program, American River flood zone screening, Placer and El Dorado County coverage, and Bay Area transplant rental market data.
ADU Feasibility in Fresno, CA
Central Valley affordability, City of Fresno zoning lookup, Fresno's pre-approved ADU plan program, and rental market data from Woodward Park to Clovis.
Guides & Resources
California ADU Laws 2026 — What Every Homeowner Needs to Know
SB 543 changed California ADU rules on January 1, 2026. What it means for your property, plus the 2023 laws (AB 976, AB 1033) that still apply.
Garage to ADU Conversion in California (2026): Permits & Cost
Garage-to-ADU conversion in California: replacement-parking rules, required permits, the 60-day approval clock, $80K–$150K cost, and the JADU option.
Can Your HOA Block Your California ADU? Your Legal Rights Under State Law (2026)
California law voids any HOA rule that effectively bans ADUs. What HOAs can still regulate, what they cannot require, and how to respond when they push back anyway.
California Fire Zone ADU Guide 2026: Build Costs, Permit Requirements, and Whether It Still Makes Sense
VHFHSZ designation adds $13,000–$50,000 to construction costs and changes your insurance options. What Chapter 7A requires, how to check your parcel on CAL FIRE FRAP, and whether fire zone ADUs still pencil out financially.
The Hidden Costs of California ADU Projects — What Most Homeowners Don't See Coming
Fire zone upgrades, flood requirements, utility fees, school impact fees. The costs that surprise homeowners after they have already hired an architect.
How to Finance a California ADU in 2026: HELOC, Construction Loan, Cash-Out Refi, and Government Programs Compared
HELOC, cash-out refi, HomeStyle Renovation, FHA 203(k), and city programs compared — plus why the CalHFA ADU Grant, closed since December 2023, is not an option today. Includes monthly payment math, the appraisal gap problem, and what lenders actually look at.
California ADU Property Tax 2026: What Prop 13 Protects, What Gets Reassessed, and What to Ask Before You Build
Building an ADU triggers partial reassessment of the new structure only — Prop 13 protects your existing home. SB 1164’s property tax exemption died in 2024 and was not reintroduced. Here’s exactly how the math works.
The San Diego Fast-Track: Getting Your ADU Powered Up Sooner
The USPS address certification step that most homeowners miss — and how skipping it delays utility connections by 60+ days. A step-by-step guide to get SDG&E connected on time.
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