A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateADU Company in Sacramento, CA
ADU construction in Sacramento runs from roughly $180 to $450 per square foot depending on whether you choose a panelized prefab or a fully custom site-built unit. What makes Sacramento jobs different from other California markets is the housing stock: most of our work happens on 1950s-to-1970s ranch homes with mature trees, oversized lots, and electrical panels that were never sized for a second dwelling. We’re Benson ADU Builders, and we put a written price in front of you before any work begins. Call (279) 254-1808 to talk through your lot and get a real number, not a hand-wave.
Why Sacramento Homes Are Different
Sacramento’s dominant housing type is the single-story ranch, built in the decades after World War II across neighborhoods like North Sacramento, South Sacramento, the Pocket, and Greenhaven. Those homes sit on generous lots, which sounds perfect for a detached ADU. But most of them were built before modern energy codes, before 200-amp panels were standard, and before anyone planned for a second kitchen pulling load off the same service line. An ADU on a 1962 ranch in South Sacramento almost always starts with a panel upgrade, and many of those older sewer laterals are undersized for a second bathroom.
Climate is the other factor. Hot, dry summers with weeks above 95 degrees and cool, wet winters mean the insulation package and HVAC sizing matter more here than they do in coastal markets. We also design for wildfire smoke resilience: sealed ducts, higher-MERV filtration, and tight building envelopes. In low-lying pockets near the American and Sacramento Rivers, flood risk changes foundation design. A slab-on-grade that works in Antelope may need to be raised or piered in the Pocket. None of this is guesswork; it’s what we see week after week on Sacramento jobs.
The Pocket and Greenhaven neighborhoods deserve a specific note. Many of those mid-century tract homes have deep front setbacks and shallow backyards, which pushes ADU design toward side-yard placement or garage conversions. That pattern is uniquely common in Sacramento’s older subdivisions, and it changes the conversation from “where do we put it” to “which existing structure makes the most sense to convert.”
Our Main Sacramento Services
Sacramento homeowners most often call us about two things: building a new ADU from the ground up, and adding square footage to the home they already love. Each has its own dedicated Sacramento page below.
ADU Builders in Sacramento
Building an ADU in Sacramento means navigating setbacks, lot coverage rules, and utility tie-ins on properties that were never platted for a second unit. We build both detached units and garage conversions, working with prefab brands like Abodu, Cover, and Dvele when speed and cost predictability matter most. On a typical Sacramento ranch lot, we’re checking panel capacity, sewer lateral condition, and tree protection zones before we ever propose a floor plan. ADU Builders in Sacramento covers the full process, pricing examples, and what to expect from your first site visit.
Home Addition Contractor in Sacramento
A home addition in Sacramento usually means extending a ranch home’s footprint into the side or rear yard without disturbing mature landscaping. These projects involve foundation matching, roofline integration, and often a full panel and HVAC upgrade to carry the added load. We handle permits, plans, and all site work. Home Addition Contractor in Sacramento walks through the addition process, typical cost ranges in this market, and how we phase work to keep your home livable during construction.
Room Addition Contractor in Sacramento
Room additions are the smaller sibling: a single bedroom, a home office, a second bath, or a family room bump-out. In Sacramento, these often tie into older ranch homes where the existing roofline and foundation need careful matching. We keep these projects disciplined: written scope, written price, and a schedule you can track from your phone. Room Addition Contractor in Sacramento explains what a room addition costs here and how we sequence the work week by week.
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 Sacramento
We build with panelized and modular systems from Abodu, Cover, and Dvele, and we source James Hardie cladding for site-built additions. Panels arrive factory-cut and pre-inspected, which cuts Sacramento construction time substantially compared to fully stick-built framing. Our brands page has the full list and what each system does best.
Pricing for ADU Company in Sacramento, CA
| Service | Typical range in Sacramento |
|---|---|
| Detached ADU (site-built) | $250 – $450 per sq ft |
| Prefab ADU (Abodu, Cover, Dvele) | $180 – $320 per sq ft |
| Garage conversion ADU | $140 – $240 per sq ft |
| JADU (junior ADU) | $90 – $160 per sq ft |
| Home addition (full footprint) | $220 – $400 per sq ft |
| Room addition (single room) | $200 – $350 per sq ft |
| Electrical panel upgrade to 200A | $2,500 – $5,500 |
| Sewer lateral replacement | $4,000 – $12,000 |
| Site prep and foundation | $15,000 – $40,000 |
| Full design and permit package | $4,000 – $9,000 |
What pushes a Sacramento ADU toward the top of those ranges is usually the lot: mature tree protection, flood-plain foundation requirements, or a panel that needs full replacement before the first wall goes up. Every Benson ADU Builders project carries the same promise: a written price before work starts, and a 365-Day Done Right Promise in writing.
Neighborhoods We Serve in Sacramento
Our crews run ADU and addition projects throughout Sacramento. We know the lot patterns and permit realities of each area well enough to flag issues before they become change orders.
- North Sacramento
- South Sacramento
- The Pocket and Greenhaven
- Land Park
- East Sacramento
Our Sacramento dispatch typically schedules site visits within a few business days of your call, depending on season and crew availability.
Service Area – Cities Near Sacramento
While this page covers Sacramento proper, we also take ADU and addition projects in nearby communities where the housing stock and lot conditions are similar. You can find local detail on West Sacramento, CA, Elverta, CA, Antelope, CA, and Davis, CA. Each page covers the local conditions, pricing, and process for that area.
Serving Sacramento, CA - Our Local Coverage Area
We’re based in the Sacramento 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 Sacramento
Yes. We handle the design, engineering, and full permit package for every Sacramento ADU and addition project. The permit timeline varies by project scope and current city review volume, but we manage the entire process and keep you updated in real time. Call (279) 254-1808 for specifics on your lot.
We work across Sacramento proper, including North and South Sacramento, the Pocket, Greenhaven, Land Park, and East Sacramento. Each area has slightly different lot conditions, and we’ve built enough here to know what each one throws at you. Call (279) 254-1808 to see if we’re a fit for your address.
A prefab ADU like Abodu or Cover can often be permitted and installed within six to nine months, while a full site-built custom ADU usually runs nine to fourteen months from first site visit to final inspection. Room additions land somewhere in the four-to-seven-month range. We’ll give you a written schedule before work starts. Call (279) 254-1808 for a specific timeline on your project.
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 Sacramento Customers Say
"Booked a consult online and met the project manager two days later. Weekly progress updates arrived by text with photos. ADU finished on schedule."
- Hannah W."Room addition off the kitchen. Framing, drywall, and paint all done well."
- Wade L."Great build. Inspection delay, the county's fault, pushed things a week, but updates were clear."
- Soo-jin P.
