Stevenson Ranch · Garage conversion permits
Garage conversion permits in Stevenson Ranch
How to convert a garage conversion in Stevenson Ranch: permit pathway through LA County Public Works (Building & Safety), drawings required, local watch-outs, and a free address-level wizard for your Stevenson Ranch lot.
Stevenson Ranch context
Stevenson Ranch is unincorporated despite immediately adjoining Santa Clarita city limits. Permits run through LA County DPW Building & Safety at the Santa Clarita field office via EPIC-LA. Most parcels are inside master-association HOAs that layer architectural review on top of LA County's permit process. Western foothill parcels sit in the Very High Fire Hazard Severity Zone (VHFHSZ) — Chapter 7A construction required.
- Permit agency
- LA County Public Works (Building & Safety)
- Median lot size
- 7,400 sqft
Drawings you'll need to submit
Convert your garage into an ADU in its current footprint. No replacement parking required. Often the cheapest LA ADU path.
- Site plan (parcel layout + setbacks)
- floor plan existing
- Proposed floor plan
- Elevations (each side)
PermitPathLA generates the site plan free from your Stevenson Ranch address. The other drawings come from your architect or plan firm — we list pre-approved options in the wizard.
Stevenson Ranch watch-outs for garage conversion
Overlays that hit a meaningful share of Stevenson Ranch lots
Very High Fire Hazard Severity Zone (VHFHSZ)~35% of parcels
Western foothill parcels. Chapter 7A construction + defensible space at final.
Master-association HOA architectural review~85% of parcels
Most parcels in master-association HOAs with architectural review on exterior changes.
Local quirks
HOA architectural review is layered on top of LA County permits
Almost every Stevenson Ranch parcel is in a master-association HOA. The HOA's architectural review layers on top of LA County's permit process. Get HOA scoping done before drafting plans.
Don't file with Santa Clarita city — it's LA County
Stevenson Ranch residents often default to Santa Clarita city for permits, then have to restart with LA County. Verify your parcel's jurisdiction.
Six Flags Magic Mountain rental-market context
Six Flags Magic Mountain is immediately west of Stevenson Ranch. Short-term rental (STR) ADU economics here are stronger than mid-SCV averages — but most master-association HOAs prohibit STRs. Verify CC&Rs.
Run your Stevenson Ranch address through the wizard
We pull your parcel polygon from county GIS, apply Stevenson Ranch ordinance + state baseline rules, generate the site plan, and walk you through the LA County Public Works (Building & Safety) submittal. Free, no signup.