A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateADU Company in Pasadena, CA
Fielding ADU Pasadena builds accessory dwelling units, garage conversions, and room additions across Pasadena. Most jobs here are infill projects on compact lots where the existing home was built before 1930, so setback rules, protected trees, and old sewer laterals shape the work from day one. Call (626) 657-5541 and you’ll reach a live person who can talk through your lot and your options.
Why Pasadena Homes Are Different
Pasadena’s housing stock runs to Craftsman bungalows, Spanish Colonial Revivals, and mid-century ranch homes, many on lots where a mature oak or sycamore sits within a few feet of where the new foundation wants to go. That triggers a protected tree permit faster than most property owners expect, and it changes the siting conversation before we ever talk floor plans. The city has pushed hard to streamline ADU permitting, but a Pasadena ADU is still a careful negotiation between what the state allows and what your specific lot will take. Setback variance (the city’s written permission to build closer to the property line than standard rules allow) is a routine part of these projects here.
The climate works in your favor for build scheduling. Pasadena’s hot, dry summers and mild winters mean we can pour concrete and frame through most of the year, though we design for cross-ventilation and shading so the finished ADU doesn’t bake in August. The soil is the wildcard. Expansive clay is common in this city, and it can require deeper footings than a typical Los Angeles County build. We factor that into the written price before any work starts, not after excavation surprises us.
Our Main Pasadena Services
Three services account for nearly every call we take in Pasadena. Each has its own page here with local details, but the short version is below.
Room Addition Contractor in Pasadena
A room addition in Pasadena usually means attaching new square footage to a home that was framed when dimensional lumber was actually dimensional. The existing roof lines, foundation, and electrical panel often set the real budget. We’re comfortable working around mature trees at the lot line and pulling the protected tree permit when an oak or sycamore is close to the dig. Room Addition Contractor in Pasadena.
Garage Conversion Contractor in Pasadena
Pasadena’s detached garages are frequently the easiest path to an ADU: the structure already exists, the slab is in place, and the city’s ADU rules treat conversions differently than new builds. The catch is usually the sewer lateral and the electrical service, both of which are commonly undersized for a dwelling unit. We inspect that before pricing. Garage Conversion Contractor in Pasadena.
ADU Builders in Pasadena
New backyard ADUs in Pasadena split between prefab platforms and conventional stick-frame builds, depending on lot access and budget. We work with Abodu and Cover for prefab ADUs where the site allows crane or panel delivery, and we build conventional units with James Hardie siding when the lot is tight or the design is custom. ADU Builders in Pasadena.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Brands We Service in Pasadena
We’re fluent with the prefab and modular platforms Pasadena homeowners research most: Abodu, Cover, and Dvele, plus conventional builds using James Hardie siding. Our brands page lists what we install and what each platform does best.
Pricing for ADU Company in Pasadena, CA
| Service | Typical range in Pasadena |
|---|---|
| Detached ADU (new build, 400 – 800 sq ft) | $180,000 – $320,000 |
| Garage conversion ADU | $95,000 – $160,000 |
| Prefab ADU (Abodu or Cover, installed) | $140,000 – $260,000 |
| Room addition (200 – 400 sq ft) | $85,000 – $160,000 |
| Site work and foundation (expansive clay, deeper footings) | $18,000 – $45,000 |
| Protected tree permit handling | $1,200 – $3,500 |
| Sewer lateral replacement if required | $6,000 – $14,000 |
| Electrical service upgrade (100A to 200A) | $4,500 – $8,500 |
| Setback variance application | $1,500 – $4,000 |
Pasadena-specific costs show up in three places: protected tree permits when an oak or sycamore is near the foundation line, deeper footings because of the expansive clay, and sewer lateral work on pre-1930 lots where the original pipe is still in the ground. Our written price goes in front of you before a single nail is driven, and the number you approve is the number on the final invoice.
Neighborhoods We Serve in Pasadena
We work across the full city, from Bungalow Heaven to the ranch homes north of the 210, and out to the hillside lots where driveway access dictates what equipment can reach the backyard. Representative areas include:
- Bungalow Heaven
- Madison Heights
- Linda Vista
- San Rafael Hills
- North Arroyo
Our crews stage locally, so response across Pasadena typically runs one to two business days for site visits.
Service Area – Cities Near Pasadena
Fielding ADU Pasadena serves the city of Pasadena first, and our crews also cover nearby communities where the housing stock and permitting are similar. We regularly work in San Marino, CA, Temple City, CA, Arcadia, CA, and South El Monte, CA. Dispatch and scheduling are coordinated from the Garrison Partners Los Angeles office; crews serve Pasadena locally.
Serving Pasadena, CA - Our Local Coverage Area
We’re based in the Pasadena area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About ADU Company in Pasadena
Site visits in Pasadena are usually scheduled within one to two business days. Call (626) 657-5541 and a live person will set the time; there’s no voicemail queue.
Yes. We pull the permits, file the setback variance application when one is needed, and coordinate the protected tree permit if an oak or sycamore is near the foundation. Permits are included in the written price.
No. Fielding ADU Pasadena puts the price in writing before any work begins, and that number holds. If unforeseen conditions inside the work require a change, we document it and you approve it in writing before we proceed.
We serve all Pasadena neighborhoods, including Bungalow Heaven, Madison Heights, Linda Vista, San Rafael Hills, and North Arroyo, plus nearby cities like San Marino, Temple City, Arcadia, and South El Monte.
Call (626) 657-5541 to schedule your free estimate. A live person answers, and the price goes in writing before any work starts.
What happens when you call
- 1A real person answersNo phone trees - talk to a local adu pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What Pasadena Customers Say
"Garage conversion with a new bath and kitchenette. Permit was handled by them. Inspection passed first time."
- Sheila B."Insulation, drywall, and finishes were all well done. Feels like part of the house."
- Pete O."Room addition over the back patio. Framing is square, windows are tight, and the roofline matches."
- Danny L.
