Fast, Reliable ADU Builders Across Claremont
Adding an accessory dwelling unit in Claremont means building within a very specific set of rules: a tree-protection ordinance that can dictate your floor plan, a historic overlay that reviews your roofline, and fire-zone codes that choose your siding for you. We’ve worked inside all of them. Lodgewick ADU Builders handles detached ADUs, garage conversions, and JADUs across Claremont, from the college-district Craftsman blocks to the Claraboya foothills. Call (254) 602-5618 and we’ll walk your lot before you spend a dollar on plans.
Why Lodgewick ADU Builders Is Claremont’s Preferred ADU Builders Company
Russ Delmar leads our Claremont work, and he runs every project under The Kingswell Guarantee: a written price before any work starts, a defined arrival window, a clean job site, and a written guarantee on every build. If something isn’t right inside 365 days, we come back and make it right. That’s the 365-Day Done Right Promise, and it’s in writing on every Claremont project.
Our crews know the difference between a Pomona lot and a Claremont lot. The tree ordinance, the Village historic overlay, the Chapter 7A fire-zone requirements in Claraboya; these aren’t surprises we discover mid-project. They’re the first things we check. Homeowners here tell us the same story about other contractors: a quote that changed at the door, a trench dug through roots the city later flagged, a plan kicked back by design review. We work differently. We price what we’ll actually build, and we build what Claremont will actually approve.
Every technician on your property is background-checked and uniformed, and when you call with a question at 9pm on a Tuesday, a live person answers. Not a voicemail. That’s been true since 2010, when Lodgewick was founded as part of the Kingswell family of home-service companies.
Detached ADU in Claremont
A Detached ADU in Claremont typically runs $180,000 – $380,000 depending on size, site access, and fire-zone requirements, with most 600 – 800 sq ft units landing between $220,000 and $320,000. On the flatter, southern end of the city, you’re usually looking at the lower end of that range. In Claraboya or along Baseline and Mount Baldy Road, Chapter 7A ignition-resistant construction pushes the number up, because the entire exterior envelope changes: non-combustible cladding, ember-resistant vents, multi-pane glazing.
What makes a Claremont detached ADU different from a Upland or Ontario build is rarely the framing. It’s the site. Mature oaks and elms shade those deep college-district rear yards, and the city’s tree-protection ordinance can prohibit cutting the roots they put in your way. That forces the footprint and the sewer-lateral trench to be engineered around root zones, not through them.
College-District Rear-Yard Siting
The 1920s – 1940s Craftsman and Spanish Colonial Revival homes north and east of the Village sit on unusually deep lots. That’s good news for a detached unit; the space is there. But the very trees that make those streets what they are can move your ADU six feet to the left and turn a straight trench into a curved one. We route around what the city won’t let you cut, and we price that routing before we begin.
Chapter 7A Fire-Zone Construction
If you’re in a Very High Fire Hazard Severity Zone, the code isn’t optional. It changes your cladding, your vents, and your windows. We spec those materials from the first quote, not as a change order.
JADU in Claremont
A JADU in Claremont, a junior accessory dwelling unit built within the walls of an existing home, typically runs $70,000 – $130,000 depending on how much of the existing structure can be reused and whether the primary home needs electrical or plumbing upgrades to support the second unit. On a 1950s – 1970s ranch home with an attached garage or a spare bedroom over the garage, a JADU is often the most cost-effective way to add a rentable unit without touching the rear yard at all.
We’ve built JADUs alongside detached ADUs on the same Claremont parcel. It’s a smart approach when the goal is maximum rental income on one lot, and it keeps both units inside a single permit package.
Garage-Conversion JADUs
The detached single-car garages behind the Craftsman homes near the Village convert cleanly into small JADUs when the slab and framing are sound. We check both before we commit to a number, because a cracked slab under a 1938 garage changes the entire budget.
Interior JADUs
A spare bedroom or a den with its own exterior door can become a legal, rentable JADU in weeks rather than months. Claremont homeowners like this route when they want income now and a detached unit later.
Trusted Brands We Service in Claremont
We work hands-on with Abodu, Cover, and Dvele prefab ADU systems, which matters more in Claremont than most places. A prefab module dropped onto a Claraboya lot still has to meet Chapter 7A exterior requirements, and the module’s factory spec has to be adjusted for the ignition-resistant envelope. We handle that coordination. For a homeowner with a narrow, single-track driveway, a modular delivery changes the staging plan; Abodu and Cover units go in on crane or flatbed, and we’ve permitted street-side staging pads to make that work without tearing up a neighbor’s hedge.
We also build custom and traditional stick-framed ADUs when a prefab module won’t fit the site or the design review, and we use James Hardie siding on custom work because it holds up to the heat and meets fire-zone specs when required.
Common ADU Builders Problems We See in Claremont Homes
- Quotes written to Pomona habits. Contractors who don’t know Claremont assume they can lay out the rear-yard footprint and trench freely, then hit the tree ordinance and redesign after the quote is signed. We check the tree canopy and root zones before we price.
- Village historic-overlay rejection. On 1920s – 1940s parcels, the design-compatibility review cares about massing, roof pitch, and glazing. A perfectly legal ADU gets kicked back for looking wrong next to a Spanish Colonial Revival original. We design to the overlay from day one.
- Underquoted access and staging. A single-track driveway or a shared drive means concrete trucks, dumpsters, and modular deliveries need street permits and a staging plan. That access reality changes the number, and we put it in the written price.
- Fire-zone surprises. Homeowners in Claraboya are sometimes told Chapter 7A doesn’t apply to ADUs. It does. We spec ignition-resistant construction where the zone requires it, and we don’t pretend otherwise to win the bid.
Pricing for ADU Builders in Claremont, CA
A JADU in Claremont generally runs $70,000 – $130,000. A Detached ADU runs $180,000 – $380,000, with the fire-zone envelope in the northern foothills adding $25,000 – $45,000 to the exterior package. A garage-conversion ADU typically lands $120,000 – $220,000 depending on the slab and the existing framing. On a tight Village-adjacent lot, the tree-protection ordinance and historic-overlay review can add $8,000 – $20,000 in design and engineering work before framing begins. Those are real numbers for this market. Call (254) 602-5618 and we’ll give you a written, line-item price for your specific lot, free.
We Also Serve Cities Near Claremont
Our ADU Builders team works throughout the Pomona Valley and the eastern foothills. We serve Claremont and the surrounding communities of Montclair, La Verne, Upland, and Ontario, with the same written-price guarantee and the same crews on each site.
Serving Claremont, CA - Our Local Coverage Area
We’re based in the Claremont 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 Builders in Claremont
The city’s tree-protection ordinance can prohibit cutting or damaging the root systems of mature oaks, elms, and jacarandas, which means your ADU footprint and sewer-lateral trench often have to be routed around protected root zones. This is common on the deep college-district lots where those trees shade the rear yard. On a recent job off Mount Baldy Road in Claraboya, we routed a sewer lateral around a protected oak, and the design change was engineered before the quote was signed. It’s better to know this before you pay for plans. Call (254) 602-5618 and we’ll check your lot’s tree situation first.
A house in the Village historic overlay faces design-compatibility review, which means the ADU’s massing, roof pitch, and window patterns have to fit the character of the 1920s – 1940s Craftsman and Spanish Colonial Revival streetscape. A plan that’s legal in every other city can be kicked back here. We design to that review from the beginning, because it’s part of getting the permit, not an obstacle after the fact. Call (254) 602-5618 for a free estimate on an ADU that actually gets approved.
If your parcel is in a California-designated Very High Fire Hazard Severity Zone, which includes much of Claraboya and streets along Baseline and Mount Baldy Road, then yes, your new ADU must meet Chapter 7A ignition-resistant standards: non-combustible or fire-rated cladding, ember-resistant vents, and multi-pane glazing. We built a 600 sq ft detached ADU and a JADU in Claraboya staying inside that envelope, and the exterior package added a measurable cost that was in the written price from day one. Call (254) 602-5618 and we’ll check your zone before you commit to a design.
A narrow, single-track driveway changes how concrete trucks, dumpsters, skips, and modular deliveries get onto your site, and sometimes they can’t. On that Claraboya build, we staged the Abodu modules and a dumpster on a permitted street-side pad because the driveway was a single track. That permit, that staging plan, and that schedule coordination are part of the written price. If a contractor quotes you without asking about your driveway, the number they gave you is wrong. Call (254) 602-5618 for a free estimate that includes the access reality of your lot.
Yes, and in Claremont it’s a requirement of doing the job right. We post the city’s work-hour notice with the neighbors before demolition and framing, keep the job site clean at the end of every day, and manage the staging so trucks and materials don’t block a shared drive. The Kingswell Way is to say the price before the work, show up in the window given, leave the place cleaner than we found it, put the guarantee in writing, and come back if it fails. Call (254) 602-5618 and we’ll walk you through how we’ll handle your specific street.
Written by Russ Delmar, Owner at Lodgewick ADU Builders, serving Claremont and the Pomona Valley since 2010.