The Altadena Builder Registry
Every builder here is license-verified.
An independent directory of contractors serving Altadena, California — ADU builders, custom home builders, remodelers, and fire-rebuild specialists. Every listing is checked against the CSLB public record, with the verification date shown. No paid rankings, no invented reviews.
Try it with our featured builder — CSLB #1103479 →
Featured listing — paid placement, always labeled
JMB Builders LLC
Altadena-only general contractor for ground-up custom homes, complete rebuilds, whole-home renovations, and detached ADUs. One community, one standard — licensed, bonded, and insured, with every credential below pulled live from the state record.
- License
- #1103479
- Classification
- B — General Building
- Status
- CURRENT & ACTIVE
- Expires
- 04/30/2027
- Bonds on file
- $25K + $100K
- Liability
- $2,000,000
Browse the registry
Six ways in.
ADU & Garage Conversion Builders
Licensed contractors building detached ADUs, garage conversions, and JADUs for Altadena lots.
CATEGORY / 02Custom Home Builders
Ground-up and rebuild specialists — new homes on Altadena lots, including hillside parcels.
CATEGORY / 03Home Remodelers & Renovators
Whole-home renovation contractors working in and around Altadena.
CATEGORY / 04Fire Rebuild Specialists
Contractors with Eaton Fire rebuild experience and current CSLB standing.
CATEGORY / 05Design-Build & Architecture Firms
Firms that design and build under one roof — the model many Altadena projects use.
TOOL / 01CSLB License Verification
The free lookup tool — check any California contractor before you sign anything.
Methodology
How every listing gets its seal.
No pay-to-verify, no self-reported credentials. Four checks run on every listing, and the date is shown.
License pulled live
Status, classification, and expiry fetched from the CSLB record — not typed in by anyone.
Bonds & insurance checked
Contractor bond and liability coverage on file with the state, with amounts.
Service area confirmed
Listings serve Altadena or the immediately surrounding communities — not "greater LA."
Refreshed quarterly
Re-verified on a rolling schedule; status changes surface with the new date.