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 Selma
Adding a room to your Selma home should not feel like a gamble. We give you a written price before any work starts, a real schedule you can follow from your phone, and a 365-Day Done Right Promise stamped on the job. Benson ADU Fresno coordinates room additions, ADU conversions, and sunroom builds across Selma from our Central Valley office, with crews who know the east-side clay lots and the older west-of-Highway-99 neighborhoods. Call (559) 206-2363 for a free estimate and we will walk you through the actual numbers.
Why Benson ADU Fresno Is Selma’s Preferred Room Addition Contractor Company
Selma homeowners tell us the same thing: other contractors gave them a verbal number, disappeared, then came back with a change order. That is exactly what our written-price guarantee eliminates. Before we ever break ground, you get a line-item quote covering foundation work, framing, HVAC sizing, finish materials, and the permit path. If the job is not done right within 365 days, we make it right in writing. No phone tag, no “let me get back to you.” A live person answers at (559) 206-2363 around the clock.
Our Room Addition Contractor team has built on the flat acreage east of Selma where clay soil and high water tables demand pier-and-grade-beam foundations, plus the tight residential lots west of Highway 99 where shallow sewer laterals trip up unprepared builders. Troy Eastman, our owner, keeps every Selma project on a written scope from day one. Background-checked, uniformed technicians show up when we say they will, and you always know who is walking onto your property.
ADU Conversion in Selma
ADU conversion in Selma typically runs $180,000 – $320,000 depending on whether you are converting an existing garage, building detached on acreage, or attaching to a ranch home. “ADU” means accessory dwelling unit: a second, fully independent living space with its own kitchen, bath, and entrance. A JADU is a junior ADU, capped at 500 square feet and typically carved out of an existing home. On Selma’s east side, detached ADUs on large R-1 lots are unusually feasible because the land is flat and already graded for a second structure, but the clay foundation work is non-negotiable.
Garage and Existing-Structure Conversions
Converting a garage on a Selma property means bringing the existing slab, walls, and roof up to current residential code. Older garages built in the 1960s and 1970s often sit on unreinforced slabs that were never meant for habitable space. We camera-scope sewer laterals before quoting, especially west of Highway 99, because a shallow lateral can add $4,000 – $9,000 to the job before framing ever starts. Most Selma garage conversions land in the $160,000 – $220,000 range when the existing structure is sound.
Detached ADUs on Selma Acreage
On a half-acre or larger east of Highway 99, a detached ADU gives you rental income or a true multigenerational setup without touching the main house. Selma’s R-1 zoning allows detached ADUs on most residential lots, but the high water table means we typically pour pier-and-grade-beam foundations instead of slab-on-grade. That adds roughly $12,000 – $20,000 versus a standard slab, and it is the difference between an ADU that stays level for decades and one that cracks drywall within two winters. Detached ADUs in Selma run $190,000 – $320,000 for a 500 – 800 square-foot unit.
Sunroom Builders in Selma
Sunroom builders in Selma work with two realities: summers that push past 100°F for weeks and winters that dip into the 30s with tule fog. A sunroom that is not properly insulated and correctly HVAC-sized becomes unusable by July. A typical sunroom addition in Selma runs $60,000 – $120,000 depending on square footage, glass package, and whether you want heating and cooling or just a three-season space. We size every Selma sunroom’s HVAC for the sharp swing between a 105°F August afternoon and a 35°F December morning, which means equipment that actually keeps the room comfortable without a second thought.
Three-Season and Four-Season Options
A three-season sunroom keeps costs lower in the $60,000 – $85,000 range, but you will not want to use it in January. A four-season build with insulated glass, a dedicated mini-split, and proper ceiling insulation runs $85,000 – $120,000 in Selma. The difference matters here: foggy winters mean condensation on single-pane glass, and a damp sunroom invites mold in the corners. We spec double-pane low-E glass and add a vapor barrier under the floor to keep that Selma winter fog outside where it belongs.
Matching Stucco and Roof Lines on Older Homes
Much of Selma’s housing stock is 1950s-to-1980s stucco ranchers with simple roof lines. That is actually good news for a sunroom addition: the roof ties in cleanly, and stucco matching is straightforward when the original color has not faded badly. James Hardie siding or fiber-cement panels can bridge the transition when an exact stucco match is not realistic, and we preview material samples before ordering. Expect $2,500 – $5,000 in finish matching costs on most Selma sunroom projects.
Trusted Brands We Service in Selma
We build with products you can research yourself, which is how it should be. On Selma projects we frequently work with Abodu and Cover for prefab ADU shells, Dvele for high-performance panelized builds, and James Hardie siding and trim for a finish that holds up to Central Valley heat. Because we keep a local stock of common components and hardware, a missing bracket or wrong flashing does not stall a Selma job for a week. You see the brand names on the quote, and you can look them up before you sign anything.
Common Room Addition Contractor Problems We See in Selma Homes
- Shallow sewer laterals west of Highway 99. Older Selma neighborhoods often have laterals at 18 – 24 inches, and adding a bathroom or bedroom pushes them past city code. If we do not camera-scope the line before quoting, you can get a stop-work order mid-project. We scope every lateral on west-side Selma additions before the first shovel turns.
- Expansive clay and slab heave east of Highway 99. Selma’s clay soil swells when wet and shrinks when dry, which cracks slab foundations faster than almost any other local condition. A pier-and-grade-beam foundation with a vapor barrier costs more up front but keeps the addition level. Standard slab-on-grade is the wrong call on east-side Selma lots, and we will say so plainly.
- Undersized HVAC for 100°F+ summers. A room addition that cannot hold 75°F in August is not usable, period. We run a Manual J load calculation for every Selma addition and size the equipment for the hottest week of the year. The marginal cost is $1,500 – $3,000 over an undersized system, and it pays for itself the first July you actually use the room.
- Well and septic setbacks on acreage. East of Selma, county rules govern how close a new structure can sit to an existing well or septic system. We verify setbacks with the county before finalizing a design, because a gorgeous plan that violates a 100-foot well setback is a $15,000 mistake. Do not let a contractor quote the job without checking this first.
Pricing for Room Addition Contractor in Selma, CA
Here are real numbers for Selma, not vague ballparks. A simple bedroom addition with a closet and no bath runs $80,000 – $130,000. Adding a bathroom pushes it to $120,000 – $180,000. A garage-to-ADU conversion lands between $160,000 and $220,000 when the existing structure is sound. A detached ADU on east-side acreage runs $190,000 – $320,000 depending on size and finish. A sunroom addition in Selma runs $60,000 – $120,000. Permits typically add $4,000 – $8,000 depending on whether the city or county has jurisdiction. Every quote includes a written price before work starts, and that price does not move unless you change the scope. Call (559) 206-2363 for a free estimate on your specific Selma property.
We Also Serve Cities Near Selma
While this page focuses on Selma, our crews regularly handle room additions and ADU projects in Fowler, Parlier, Kingsburg, and Reedley. If you are just outside city limits or on county land between Selma and those towns, we are already familiar with the permit path and the soil conditions. See our Room Addition Contractor in Selma coverage for details on how we scope jobs throughout the area.
Serving Selma, CA - Our Local Coverage Area
We’re based in the Selma 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 Selma
If your property is inside Selma city limits, you go through the City of Selma. If you are on unincorporated county land east of the city, Fresno County has jurisdiction for building permits, well setbacks, and septic requirements. County projects often have different foundation and drainage review standards, especially on high-water-table clay. Call (559) 206-2363 and we can confirm which authority applies to your parcel before quoting.
No, but it takes effort. Stucco from the 1960s has a specific texture and color that fades over time. We can sample-match the existing finish to within a close range, or use James Hardie siding as a clean transition when an exact match would stand out more than a deliberate contrast. Expect $2,500 – $5,000 in finish matching on most Selma additions, and we include that line item in your written quote.
Selma’s clay expands when wet and shrinks when dry, which heaves a standard slab and cracks walls and ceilings within a few seasons. On east-side lots with a high water table, we use pier-and-grade-beam foundations with a vapor barrier, which typically adds $12,000 – $20,000 versus slab-on-grade. That is not an upsell; it is the standard you need for an addition that stays level on Selma soil. Call (559) 206-2363 for exact pricing on your lot.
You need a camera scope of the lateral line before any design is final. Homes west of Highway 99 in Selma often have shallow laterals at 18 – 24 inches that no longer meet code once you add a bedroom or bath, and upgrading the lateral can run $4,000 – $9,000. We scope the line during the estimate phase so that cost is on the written quote, not a surprise after demo starts. Call (559) 206-2363 to schedule a scope.
It depends on the setbacks Fresno County requires for your existing well and septic system. Some older Selma acreage has wells or septic tanks closer to the garage than current code allows for a habitable dwelling, which can force a relocation or a variance. We verify setbacks with the county before quoting so you know exactly what the job will require. Call (559) 206-2363 for a free estimate that includes this check.
Adding square footage in Selma is a real investment, and the right foundation, sewer, and HVAC decisions on the front end are what keep that investment solid for decades. We put every number in writing before work starts, and the 365-Day Done Right Promise stays with the job for a full year. Call (559) 206-2363 to schedule your free estimate with Troy Eastman and the Benson ADU Fresno team.
Written by Troy Eastman, Owner at Benson ADU Fresno, coordinating room additions and ADU projects across Selma and the Central Valley.
