A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateADU Company in Orinda, CA
Planning an ADU in Orinda, CA means working around hillsides, protected oaks, and wildfire-safety codes that most Bay Area contractors simply never face. The housing stock here is different, and so are the rules. At Lodgewick ADU Builders, an ADU company in Orinda backed by the Kingswell family, we handle accessory dwelling units, garage conversions, and home additions with written pricing before any work begins. If you’re weighing a backyard unit on a steep Orinda lot, call us at (707) 760-0502 and we’ll walk you through what’s actually buildable.
Why Orinda Homes Are Different
Orinda was largely built out between the 1950s and 1970s, and many of those custom homes still stand on steep, wooded hillside lots with generous acreage. That creates two realities for ADU work. First, privacy: you can often place a unit where neighbors won’t see it. Second, site access: getting equipment and materials up a narrow, winding driveway is a real planning challenge, not an afterthought.
The climate matters too. Orinda’s hot, dry summers put the area squarely in wildfire country, and Contra Costa County enforces defensible-space and fire-resistant construction requirements on new structures, including ADUs. That means choosing the right siding, vents, and roof assembly from day one. Properties in neighborhoods like Sleepy Hollow, Glorietta, and Miner Road often carry additional constraints, including protected oak and redwood canopies that can shrink or shift an ADU footprint. We survey for exactly these issues before a design is finalized, because in Orinda, the tree ordinance has quietly killed more projects than the budget ever has.
Our Main Orinda Services
Orinda homeowners call us most often about three things: building a detached or attached ADU from the ground up, converting an existing garage into livable space, and adding square footage to a primary home. Each service has its own dedicated Orinda page, linked below.
Home Addition Contractor in Orinda
A home addition in Orinda is rarely a simple box bolted onto the back of a house. Hillside lots often require engineered foundations, retaining walls, or pier systems, and the town’s planning review will look closely at how the addition fits the existing architecture and how it changes defensible space around the home. We coordinate that full picture: structural engineering, fire-resistant materials, and a written price before anything is torn open. If you’re weighing an addition against building an ADU instead, our Home Addition Contractor in Orinda page has the breakdown.
Garage Conversion Contractor in Orinda
Converting a garage in Orinda often makes sense because the structure already exists, which means less site disturbance on a hillside lot. The catch is that many Orinda garages from the 1950s and 1960s weren’t built to current seismic or fire codes, so the conversion typically includes new shear walls, upgraded electrical, and fire-rated assemblies. We handle the full conversion, and every job gets the written guarantee before work starts. For line-item pricing and what the permit process looks like, see Garage Conversion Contractor in Orinda.
ADU Builders in Orinda
Building a detached ADU in Orinda means working inside some of the strictest hillside and fire-safety regulations in the East Bay. Between protected trees, slope limits, and wildfire-hardening codes, the real skill is designing a unit that survives both the planning department and your budget. We work with prefab manufacturers like Boxabl and Plant Prefab where they fit, and we’ve guided Orinda projects through the tree review, design review, and building permit without surprises. For the full scope of ADU work, including JADUs, visit ADU Builders in Orinda.
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 Orinda
We work hands-on with ADU systems and materials including Boxabl, Plant Prefab, Tuff Shed, and James Hardie products. We stock common James Hardie siding and trim parts locally for Orinda jobs, which keeps most materials from getting held up by Bay Area supply delays. For details on the brands we install, see our brands.
Pricing for ADU Company in Orinda, CA
| Service | Typical range in Orinda |
|---|---|
| Standard ADU (studio to 1-bedroom) | $180,000 – $260,000 |
| Two-bedroom ADU | $240,000 – $340,000 |
| Garage conversion ADU | $120,000 – $190,000 |
| JADU (attached, under 500 sq ft) | $90,000 – $140,000 |
| Prefab ADU (Boxabl or Plant Prefab, turnkey) | $160,000 – $230,000 |
| Detached home office/studio | $110,000 – $180,000 |
| Primary home addition, 400 – 600 sq ft | $200,000 – $310,000 |
| Foundation, retaining wall, and grading work | $25,000 – $75,000 |
In Orinda, hillside grading, retaining walls, and tree-protection measures are the three items most likely to push a project toward the upper end of these ranges. Steep lots can add $30,000 to $60,000 in site work before framing even starts. Whatever the number, we give you a written price first, and that price doesn’t change unless you change the scope. Estimate calls are free at (707) 760-0502.
Neighborhoods We Serve in Orinda
We run ADU, garage conversion, and addition projects across Orinda, from the flatter lots near downtown to the steep, tree-heavy parcels up in the hills. Scheduling depends on the season and the scope of permit review, not on which street you live on.
- Sleepy Hollow
- Glorietta
- Miner Road area
- Orinda Downs
- Charles Hill
Service Area – Cities Near Orinda
We serve Orinda and the surrounding East Bay communities, including Moraga, CA, Emeryville, CA, Oakland, CA, and Martinez, CA. Dispatch and scheduling are coordinated from our San Francisco Bay Area office, and the crews working in Orinda are assigned locally so they know the hills and the permit offices.
Serving Orinda, CA - Our Local Coverage Area
We’re based in the Orinda 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 Orinda
Most Orinda ADU projects take three to eight months from design to issued permit, depending on whether protected trees trigger additional review or the project goes before the Planning Commission. Prefabricated ADUs using manufacturers like Boxabl can shorten site time, but permit time is set by the city.
Yes, in most cases. Orinda’s tree ordinance requires an arborist report when protected oaks or redwoods are near the work area, and a formal survey is needed to confirm setbacks on hillside lots. These two items are built into our written price from the start, not added as surprise line items later.
Yes. The Kingswell Way includes a clean job site, every day, not just at the end. On hillside lots where erosion and debris can reach the street quickly, our crews use standard silt-fence and daily-blowdown practices, and we leave the property cleaner than we found it.
If you’re ready to talk about an ADU, garage conversion, or addition in Orinda, call (707) 760-0502 for a free estimate and a written price before you commit to anything.
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 Orinda Customers Say
"The ADU came out beautiful and the permitting, which terrified me, was handled start to finish. They kept me updated every week so I was never wondering what was happening."
- Shauna Mills"Turned our detached garage into a little guest house. Clean crew, respectful of the neighbors, and no mystery charges at the end. Love how it turned out."
- Carmela Fontes"I was nervous about adding on but they walked me through every step and every cost before we started. No surprise change orders halfway through like I'd heard horror stories about."
- Eleanor Pratt
