







A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateADU Company in Kerman, CA
ADU construction in Kerman runs $160,000 to $350,000 for a full detached unit, and $130,000 to $290,000 for a garage conversion, with prefab panel projects like Abodu and Cover often landing on the lower end of that range. Kerman’s mix of 1990s tract homes, older farmhouses, and large rural parcels creates a very different set of conditions than a typical Fresno subdivision job. Call (559) 206-2363 for a written price before any work starts.
Why Kerman Homes Are Different

Kerman’s housing stock splits roughly into two buckets, and each changes the job. The first is the wave of single-family tract homes built between the 1990s and 2010s on lots between 6,000 and 10,000 square feet. Those parcels are tighter than what you find in older farm towns, which means an ADU usually has to hug a side or rear setback. Setback is the minimum distance a structure must sit from a property line, and Kerman’s typical 4-foot side and 5-to-10-foot rear setbacks force most designs to go long and narrow rather than wide.
The second bucket is the older farmhouse on a large agricultural parcel, often on a private well and septic system instead of city sewer. In the county pockets around Kerman, we regularly see original 1950s septic tanks that have to be evaluated for the added bedroom count before an ADU permit will even be accepted. That evaluation can add a few weeks to the front end of the project, but it usually means the difference between a permit that sails through and one that gets bounced back. We’re used to it here. Also in play: 100°F-plus summers mean cooling is not an afterthought. Any ADU we build in Kerman gets high-efficiency insulation and a properly sized HVAC package, because a unit that can’t hold 74 degrees in August is a unit nobody wants to live in. Foggy, cool winters make moisture-resistant materials a quiet priority, especially on north-facing walls.
Our Main Kerman Services
Nearly every call we take in Kerman is about one of three things: a backyard ADU for family or rental income, a full home addition for a growing household, or a single room addition that makes the current floor plan work. Here’s how each one looks in Kerman.
ADU Builders in Kerman
In Kerman, an ADU is usually a 400 to 750 square foot detached unit in the backyard, sited against the rear setback with its own entrance and a small covered porch. On septic-tied parcels, the health department has to sign off on the added bedroom count before anything else moves, and that’s the first thing we handle. On city-sewer lots inside Kerman proper, that step goes away and approvals move more predictably. We build both site-built and prefab panel units, and the prefab route with Abodu or Cover can shave real weeks off the timeline. ADU Builders in Kerman is where you’ll find the full breakdown of costs, options, and the permit path.

Home Addition Contractor in Kerman
A home addition in Kerman is most often a primary suite, an expanded kitchen, or a second living area that turns a 1990s tract home into something that actually fits the family now living in it. On a 6,000 square foot lot, the addition usually has to build up or push out toward the rear because the side yard is already at the setback line. Older farmhouse additions are a different animal: roof pitches rarely match modern framing, and the original slab often needs selective demolition before new footings go in. We write the full scope and the price before we ever pull a permit. Home Addition Contractor in Kerman covers the process in Kerman, including what to expect from the building department.

Room Addition Contractor in Kerman
A room addition usually means one room: a bedroom, an office, a den, a fourth bedroom for a house that currently has three. In Kerman tract homes, the most common addition is a rear-facing room that borrows space from the backyard and ties into the existing roofline. We specify dust-resistant construction during framing and drywall, because Kerman’s hot dry summers kick up fine dust that some homes seem to hold onto for years. The entire job is scoped in writing up front, with fixed pricing and no change orders unless you ask for one. Room Addition Contractor in Kerman lays out the price ranges and timeline for a single-room build.

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 Kerman
We’re authorized to build with Abodu, Cover, Dvele, and Mighty Buildings, so Kerman homeowners get real options instead of one take-it-or-leave-it product. Prefab panels ship to the job site in Kerman and assembly crews handle everything from the foundation to the final punch list. Visit our brands page to compare the lines side by side.
Pricing for ADU Company in Kerman, CA
These are the price ranges we quote in Kerman today. The final number moves on site conditions, utility connections, and the condition of the existing structure, but the written price never changes once work starts.
| Service | Typical range in Kerman |
|---|---|
| Detached ADU (site-built, 400 – 750 sq ft) | $160,000 – $350,000 |
| Detached ADU (prefab panel, e.g. Abodu or Cover) | $145,000 – $280,000 |
| Garage conversion ADU | $130,000 – $290,000 |
| JADU (junior ADU, attached to existing home) | $80,000 – $160,000 |
| Home addition (200 – 500 sq ft, site-built) | $100,000 – $250,000 |
| Room addition (single room, 120 – 240 sq ft) | $60,000 – $140,000 |
| Second story addition (up to 600 sq ft) | $230,000 – $420,000 |
| Primary suite addition | $120,000 – $260,000 |
What pushes a Kerman price toward the top of a range is almost always underground: a septic tank that needs evaluation or replacement, a long trench for a new power line, or a pad that has to be engineered for the heavier clay soils that show up on some parcels. The price we hand you in writing is the price you pay. No scope creep billed after the fact, no surprise line items at the door.
Neighborhoods We Serve in Kerman
We work across Kerman and the surrounding county pockets, from the tight tract-home blocks near the city center to the open farm parcels out toward the west and north. Our crews are in this area regularly, and we schedule work so you’re not waiting weeks for a site visit.
- Central Kerman (near Madera Avenue and the historic core)
- Kerman southwest residential tracts
- Northeast Kerman newer developments
- Rural parcels west of Highway 145
- County pockets on the north and east edges of Kerman
Service Area – Cities Near Kerman
We serve Kerman and the surrounding Central Valley communities from our Fresno-area scheduling office. If you’re just outside Kerman, we may already work in your area as well. See our Fresno, CA, Madera, CA, Clovis, CA, or Fowler, CA pages for service details in those cities.
Serving Kerman, CA - Our Local Coverage Area
We’re based in the Kerman 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 Kerman

Site visits in Kerman are typically scheduled within a few days of your call, and we don’t ask for a deposit to walk the property. The front-end timeline depends more on your parcel: septic-tied properties need a health department review that adds time, while city-sewer lots inside Kerman proper can usually move straight into design and permit drawings. Call (559) 206-2363 to get a site visit on the calendar.
If you live in a tract with a homeowners association, you’ll need to check your CC&Rs, because some Kerman HOAs have architectural review requirements that run parallel to the city permit process. We’ve seen it go smoothly in most Kerman neighborhoods once the design hits the mandated setbacks. We handle the city side; your HOA packet is something we can help you assemble.
No. Every Benson ADU Builders project carries a written price before any work starts, and that number holds. The only time a number changes is if you ask us to modify the scope mid-project, and even then you’ll approve the written change before we act. That’s the 365-Day Done Right Promise in practice.
Call (559) 206-2363 to schedule your free estimate. Home.
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 Kerman Customers Say
"Communication was the best part. I always knew what was happening that week without having to ask."
- Dolly N."Home addition blends in with the original house."
- Vic S."Great build. Inspection delay, the county's fault, pushed things a week, but updates were clear."
- Soo-jin P.




