ADU CONTRACTOR PASADENA
Full-service ADU design, permits, and construction in Pasadena and the San Gabriel Valley. One team, one price, no surprises.
Architecture · Engineering · Permits · Construction — All Under One Roof · CSLB #1160701
Why Pasadena Homeowners Choose Payless4ADU
We're a licensed Southern California ADU contractor (CSLB #1160701) that handles architecture, engineering, permits, and construction under one roof. No subcontractor shuffle. No surprise invoices. Just a straight answer on what your project will cost and how long it will take.
About our team- We've pulled permits in Pasadena and know what the Planning Department expects — saving you weeks.
- Fixed-price contracts only. No time-and-materials surprises.
- In-house architecture and structural engineering — no fragmented subcontractor teams.
- Experience with Pasadena's historic district design standards (Bungalow Heaven, Old Pasadena, etc.).
- Dedicated project manager from design through certificate of occupancy.
- Se Habla Español — bilingual staff available.
Pasadena ADU Permit Rules at a Glance
Every city in Southern California layers its own standards on top of California state ADU law. Here's what matters most for Pasadena homeowners.
Rear & Side Setback
4 ft minimum (detached ADU)
Max Height
16 ft (standard zones)
Max Size
Up to 1,200 sq ft
JADU Max Size
500 sq ft (within existing structure)
Permit Timeline
8–14 weeks (standard); longer in historic districts
Replacement Parking
Not required for garage conversions (state law)
Owner-Occupancy
Not required (state law preempts)
Historic Districts
Additional design review required
Permit Fees
Approx. $5,000–$12,000 depending on scope
ADU Cost Estimates in Pasadena
Ranges include architecture, engineering, permits, and construction. They exclude landscaping, utility connection fees, and furnishings.
| ADU Type | Estimated Cost |
|---|---|
| Junior ADU (interior conversion) | $40,000 – $80,000 |
| Garage conversion (attached or detached) | $80,000 – $130,000 |
| Detached ADU (400–600 sq ft) | $140,000 – $200,000 |
| Detached ADU (800–1,200 sq ft) | $200,000 – $320,000 |
Pasadena 1BR ADUs typically rent for $2,000–$2,400/month. A well-built garage conversion can pay for itself in 5–7 years while adding $150,000–$250,000 to your property value.
Ready to Build in Pasadena?
Get a free ADU site analysis for your Pasadena property. We'll assess your lot, flag any permit complications, and give you a realistic cost range — no pressure, no BS.
Licensed · CSLB #1160701 · Se Habla Español