Garage conversion and ADU permit readiness

Before you hire, design, or build, find the permit traps.

PermitCheckup gives homeowners a plain-English read on the likely permit path, zoning questions, trade permits, documents, and city sources that can make or break a garage conversion or ADU.

First 25 freeNo payment requiredOfficial sources cited
Floor plans, a permit checklist, and a laptop used to review a garage conversion project.
Best before

Hiring a contractor, paying for plans, buying materials, or starting demo.

Built for

Garage conversions, ADUs, basement units, and remodels where legal living space matters.

Output

A sourced permit-readiness brief with risk flags and questions to ask the city.

Why this matters

The expensive mistake is assuming the permit is just paperwork.

For garage conversions and ADUs, the permit path can expose zoning, egress, parking, utilities, structural, energy, fire separation, and inspection issues. The earlier you find those, the cheaper they are.

Zoning or overlay surprise after design work starts

Garage structure not legal for habitable space

Electrical, plumbing, HVAC, or sewer scope missed up front

Unpermitted work creates inspection or resale problems

Contractor quote excludes permit-triggering requirements

Application correction cycle adds weeks or months

Free beta lead magnet

Get one free permit-readiness checkup for your project.

Send the city, address or nearest cross streets, project scope, rough dimensions, and whether electrical, plumbing, mechanical, or structural work is included. We reply with the likely permit path, source links, watch-outs, and next questions.

Report sectionsProject facts
Permit pathLikely / maybe / verify
Risk flagsZoning, trades, inspection
Next actionQuestions to ask before spending

Informational only. We cite public sources and help you prepare better questions for the authority having jurisdiction.

Paid product validation

The kit we are testing: a city-specific permit readiness packet.

If enough homeowners need more than a free checkup, the paid kit will package the repeatable work: checklists, plan-review traps, document prep, contractor handoff notes, and inspection questions.

For homeowners who want

Legal living space without avoidable permit surprises.

Especially useful before paying for drawings, signing a contractor scope, buying materials, or trying to legalize existing work.

Likely contents
  • City-specific permit path map
  • Garage/ADU feasibility checklist
  • Document and plan-prep worksheet
  • Contractor scope handoff sheet
Signal we want

Tell us your city and what would make a readiness kit worth paying for. That tells us what to build instead of guessing.

Join the kit waitlist

High-intent city pages

Start with the permit question closest to your project.

Austin, TX

Austin Garage Conversion Permit

Likely needs residential plan review; Austin lists garage conversion and carport/porch enclosure as a specific residential application type.

High confidence
Denver, CO

Denver Garage Conversion Permit

Likely needs residential construction review; converting a garage to habitable space is not a simple quick-permit item.

High confidence
Raleigh, NC

Raleigh Garage Conversion Permit

Likely requires plans; Raleigh lists enclosing a garage and converting unheated to heated space as permit work requiring plans.

High confidence
Austin, TX

Austin ADU Permit

Austin treats an ADU as a regulated additional dwelling unit; expect zoning verification, unique addressing, residential plan review, and trade permits where applicable.

High confidence
Denver, CO

Denver ADU Permit

Denver ADU feasibility is zoning-sensitive; expect zoning, building, SUDP, and trade review before an ADU can be built or occupied.

Medium confidence
Raleigh, NC

Raleigh ADU Permit

Raleigh ADUs require permitting and have specific zoning, size, foundation, use, contractor, and rental restrictions to verify early.

High confidence
California, Statewide

California ADU Permit

California state law creates important ADU protections, but homeowners still need local ministerial review, building permits, and site-specific compliance.

High confidence
Los Angeles, CA

Los Angeles ADU Permit

Los Angeles ADUs must follow zoning, building, and residential codes; standard plans can speed review but still require site-specific checks.

High confidence
San Diego, CA

San Diego ADU Permit

San Diego requires a building permit for every ADU or JADU; coastal, parking, FAR, and conversion rules can change the path.

High confidence
Seattle, WA

Seattle ADU Permit

Seattle ADUs are not legal unless established through a permit process; attached, detached, and existing-unit legalization all need construction permits.

High confidence
Portland, OR

Portland ADU Permit

Portland requires building and trade permits to convert a home or garage into an ADU or build a new ADU.

High confidence

Other homeowner permit guides

Useful for related remodel questions.