







A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateFast, Reliable Room Addition Contractor Across Clovis
Adding a room to a Clovis home usually costs between $95,000 and $210,000, depending on whether you’re building a bedroom suite, a family room extension, or a full master addition with a bath. Most projects in Clovis take 10 to 16 weeks from permit to final inspection. If you’re calling from the Harlan Ranch area, the Buchanan High corridor, or anywhere along Willow Avenue, our crews reach you fast because we coordinate dispatch from the Central Valley office just down the road in Fresno. Call (559) 206-2363 and you’ll get a live person, not a voicemail loop, and a written price before any work starts.
Why Benson ADU Fresno Is Clovis’s Preferred Room Addition Contractor Company

Clovis homeowners put up with a lot from contractors: verbal estimates that drift, crews that show up late, and change orders that appear out of nowhere after demo day. That’s not how we operate. Troy Eastman runs our crew as our Home Addition Contractor in Clovis, and he’s built the whole operation around one rule: if the price isn’t in writing, you don’t pay it. Every room addition we quote includes a written line-item price, a 365-Day Done Right Promise, and background-checked, uniformed technicians on your property every single day.
We know Clovis building patterns well. The tract homes from the 1990s and 2000s east of Clovis Avenue, around neighborhoods like Loma Vista and the newer subdivisions near the Clovis East area, all share similar framing, electrical, and stucco details. That matters because a contractor who has seen those houses before knows where the surprises hide. We also know what Clovis inspection officials look for, which means fewer re-inspections and fewer days where the job stalls waiting on a sign-off.
Room Additions in Clovis
Room additions in Clovis mean more than framing a box and tying on a roof. The city’s fast-track permitting makes it easier to get approval, but that same speed comes with code expectations that older homes almost never meet. When we open up a 1990s tract home, we routinely find aluminum branch wiring, twisted 2×4 studs from two decades of triple-digit heat, and insulation that predates Title 24 standards. A room addition quote that ignores those realities is a change order waiting to happen.
The right way to price a Clovis room addition is to build the surprises into the contract from day one. We write allowances for electrical panel upgrades, framing repair, and insulation retrofits before we ever swing a hammer. If the inspector tags something unexpected, you see the exact cost in writing before our crew touches it. No verbal “we’ll figure it out later.”
Open-Wall Code Upgrades
Once walls are open, Clovis building inspectors require AFCI/GFCI breakers on every new circuit. That almost always means a 200-amp panel upgrade on homes built before 2010. We price that upgrade into the initial quote, so it doesn’t arrive as a surprise line item in week three.
Framing and Sheathing Repair
Clovis summers push 105°F regularly, and that heat cycles through wall cavities year after year. Studs twist, OSB sheathing delaminates, and stucco weep screeds fail silently. When we find water-damaged sheathing behind old stucco, we re-sheath and replace vapor barrier before the new room is tied in.
Modular Home Addition in Clovis

A modular home addition in Clovis works especially well for the city’s large-lot tract stock, where a prefab panel system can be placed on 7,000 to 10,000 square foot parcels with proper setbacks. Instead of weeks of stick framing on site, the wall and roof panels arrive pre-engineered and get set in days. That means less time with your backyard torn up and fewer weather delays during the hot, dry summer stretch.
We build modular additions using brands you can research yourself: Room Addition Contractor work with Abodu, Cover, and Dvele systems gives Clovis homeowners vetted, factory-built quality rather than a single take-it-or-leave-it product. Each panel arrives with a spec sheet, and our crew handles the site work, foundation, and finish trades around it.
Prefab Panel Arrival and Set
Panels arrive on a flatbed and get craned into place, usually inside two days for a standard bedroom or office addition. Because the panels are built off-site in controlled conditions, framing inspections move faster, which keeps your Clovis permit timeline tight.
Site-Built vs. Modular Framing
Site-built framing still makes sense for odd-shaped lots or additions that wrap around existing structures. Modular makes sense when the lot is large, the addition is rectangular, and you want to cut four to six weeks off the schedule. We price both ways and show you the difference in black and white.
Trusted Brands We Service in Clovis
Our Clovis customers routinely ask about specific brands because they want to verify quality before they commit. We’re authorized to build with Abodu, Cover, Dvele, and Mighty Buildings, and we stock common replacement parts and panels locally so turnaround stays fast. When a panel arrives damaged or a spec changes mid-project, we don’t wait on a supply chain across the country. We handle it from the Central Valley distribution point and keep your Clovis project moving.
Common Room Addition Contractor Problems We See in Clovis Homes
- Quote without the panel upgrade. A contractor prices a room addition on a 1980s or 1990s Clovis subdivision home but never checks the electrical panel. Once the inspector requires AFCI/GFCI breakers on the new circuits, the original 100-amp panel overloads and the owner eats a surprise $4,500 to $7,000 upgrade. We check the panel load calculation before the quote goes out.
- Undiscovered aluminum wiring. When we opened up a 2000s tract home near the Harlan Ranch subdivision, our tech found aluminum wiring and undersized 2×4 studs that had twisted over two decades of Clovis heat. We wrote an allowance into the contract before we started, and after the permit inspector red-tagged the original panel, we priced the 200-amp upgrade and reframing in writing before our crew touched it.
- Failed stucco weep screed damage. Crews start demolition on a 1990s house and discover water-damaged OSB sheathing from a failed stucco weep screed, but they have no allowance for re-sheathing and vapor barrier replacement. The job stops, the owner waits, the price goes up. We carry a sheathing allowance on every stucco home in Clovis.
- Title 24 non-compliance on the existing structure. Pre-2014 tract homes in Clovis often lack the insulation and glazing that Title 24 now mandates once a room addition ties in. A quote that doesn’t include the retrofit gets red-tagged. Ours accounts for it upfront.
Pricing for Room Addition Contractor in Clovis, CA
Here are real Clovis market ranges for the work homeowners ask about most. A standard 12×16 bedroom addition runs $98,000 to $145,000. A primary suite with a full bath sits between $130,000 and $210,000. A modular prefab addition of similar size lands between $95,000 and $175,000 depending on finishes and site conditions. Homes in older areas near Old Town Clovis, where lots are tighter and garage conversions often make more sense, can run on the lower end if the foundation and roofline cooperate.
What moves the price in Clovis specifically: panel upgrades, stucco repair, Title 24 insulation retrofits, and the cost of tying new rooflines into existing trusses. Every quote we write includes line items for each of these, in writing, before work starts. Call (559) 206-2363 to schedule your free estimate and get a firm number, not a guess.
We Also Serve Cities Near Clovis
Our crews cover Clovis and the surrounding Central Valley communities every week. If you’re in Room Addition Contractor in Clovis, or in Fresno, Sanger, Fowler, or Madera, we can get your room addition quoted, permitted, and built under the same written-price guarantee we offer in Clovis itself.
Serving Clovis, CA - Our Local Coverage Area
We’re based in the Clovis 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 Room Addition Contractor in Clovis
The biggest trigger is the electrical panel. Most 1990s Clovis tract homes have 100-amp panels, and once you add a room, the inspector requires AFCI/GFCI breakers on every new circuit, which usually forces a 200-amp upgrade at $4,500 to $7,000. Title 24 also requires insulation and glazing retrofits on the tied-in structure. We price all of that into the initial written quote so it never arrives as a surprise. Call (559) 206-2363 for an exact breakdown on your home.
Clovis processes room addition permits faster than most Central Valley cities, often issuing over-the-counter plan approvals for simple additions within two to four weeks. The catch is that the speed applies to the review, not the inspections, and the inspections are thorough. A contractor who doesn’t pre-check for code triggers will get red-tagged and lose more time than the fast-track saved. We pre-inspect before the permit submittal so the fast-track actually works in your favor.
Yes. Homes built before 1978 in the Old Town Clovis area can contain lead paint, and some pre-1990 homes have asbestos in drywall texture or flooring adhesive. Clovis code requires testing before disturbance on any pre-1978 structure. We arrange certified testing and write the abatement cost into the quote before demo starts. Call (559) 206-2363 and we’ll walk you through what your home’s age triggers.
Clovis summers routinely exceed 100°F, and adding square footage without upsizing the HVAC means the new room runs 10 to 15 degrees hotter than the rest of the house. A new 300-400 square foot addition typically requires a 1.5 to 2 ton increase in cooling capacity, plus proper duct sizing. We calculate the load during the quote and include the HVAC line item upfront, not after the drywall is up.
Clovis enforces cool roof standards on additions over a certain square footage, and tying a new roof into an older composition shingle roof can trigger a full reroof if the existing roof doesn’t meet reflectance ratings. We check the roof condition and compliance during the estimate, so you know before you sign whether the tie-in means a patch, a section replacement, or a full reroof. Estimates are free, and the price is in writing.
Get a Written Price for Your Clovis Room Addition

The fastest way to know your real cost is to have us walk the property and check what’s inside the walls before we quote. We’ll give you a written, line-item price that includes code upgrades, panel work, framing allowances, and HVAC sizing, all backed by the 365-Day Done Right Promise. Call (559) 206-2363 today for a free estimate on your Clovis room addition.
Written by Troy Eastman, Owner at Benson ADU Fresno, serving Clovis and the Central Valley.



