







Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Fast, Reliable General Contractor Across Cotati
General contractor work in Cotati typically runs $9,000 for a small bathroom remodel up to $130,000 for a full home addition, with most kitchen and bath projects falling between $14,000 and $45,000. We’re Elmstead Remodeling, a Cedarwell company, and our crews serve Cotati from our San Francisco Bay Area dispatch office. Call (949) 850-9896 to schedule your free estimate. We know the difference between a standard Rohnert Park build and a Cotati job near La Plaza’s hexagonal grid, where lot lines meet at 60 and 120 degrees and every addition needs custom engineering.
Why Elmstead Remodeling Is Cotati’s Preferred General Contractor Company

We’ve built our reputation in Cotati by showing up with drop cloths already unfolded and shoe covers at the door. Our General Contractor in Cotati crews understand that families here live in homes built during the 1950s through 1970s post-war boom, many sitting on the Laguna de Santa Rosa floodplain with aging foundations and deferred seismic work from the Rodgers Creek Fault zone.
Calls to our office are answered by a live person, 24/7. No voicemail, no callback queue until Monday. Every project carries our 365-Day Done Right Promise, the longest-standing post-project commitment in our service area. Before any work starts, you’ll have a written price that won’t change once the crew arrives. Our technicians are background-checked and uniformed, so you know exactly who’s walking through your door.
We coordinate dispatch from our Bay Area office, but the crew that arrives at your Cotati home knows the local permit process, the floodplain engineering requirements, and the non-standard framing that hex-grid lots demand.
Styles & brands we work with







Remodeling Contractor in Cotati
Remodeling Contractor work in Cotati covers kitchen updates, bathroom renovations, whole-home reconfigurations, and basement finishing for the area’s mid-century ranch and split-level stock. Most Cotati families call us when the original 1960s layout no longer works for how they actually live, or when aging plumbing and electrical need replacement behind the walls. A typical kitchen remodel in Cotati runs $14,000 – $45,000, while bathroom projects range from $9,000 – $28,000 depending on whether we’re moving walls or refreshing finishes in place.
Whole-Home Reconfiguration
Many Cotati homes were built with small, separated rooms that modern families want opened into kitchen-living-dining flow. We handle the structural engineering, permit submittals, and inspection scheduling. On hex-grid lots near La Plaza, we verify load paths against the angled lot lines before we price the beam work.
Kitchen and Bath Updates
We install cabinets from KraftMaid and Wellborn, countertops from Cambria and Silestone, and fixtures from Kohler, Moen, and Grohe. Every selection carries manufacturer warranties you can verify yourself. We use quiet tools during children’s sleep hours where possible, and pet-safe product choices where available.
Licensed General Contractor in Cotati

Licensed General Contractor work in Cotati means we pull permits, schedule inspections, and sign off on code compliance for additions, structural changes, and systems replacement. This matters here more than in neighboring cities because Cotati’s floodplain location and unique downtown geometry trigger engineering requirements that standard bids often miss. A home addition in Cotati typically costs $45,000 – $130,000, and we won’t quote one near the hex grid without first confirming whether a fresh boundary survey is needed.
Room Additions and ADUs
We build home additions, garage conversions, and accessory dwelling units with full permit packages. On low-lying parcels, we include underslab drainage designed to the city’s floodplain engineering notes. We’ve seen excavation stall on other jobs when contractors skipped this step and hit high winter water tables.
Structural and Seismic Work
Cotati’s proximity to the Rodgers Creek Fault means many 1960s homes need seismic retrofitting before or during a major remodel. We assess anchor bolt patterns, cripple wall bracing, and shear panel requirements as part of our initial walkthrough. The written price includes this scope if our inspection finds it’s needed.
Trusted Brands We Service in Cotati
Our General Contractor team specifies named-brand materials on every Cotati project. Cabinets come from KraftMaid and Wellborn. Countertops from Cambria, Silestone, and Caesarstone. Fixtures from Kohler, Moen, and Grohe. Exterior cladding from James Hardie, roofing from GAF. For detached ADUs and modular additions, we also work with Abodu, Cover, and Dvele. These are products you can research independently, with warranties that travel with the finished project. We stock common hardware and fasteners locally so a missing part doesn’t stall your job for a week.
See the difference
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AfterCommon General Contractor Problems We See in Cotati Homes
- Hex-grid lot surprises near La Plaza. Contractors accustomed to orthogonal grids bid standard framing, then discover the 60- or 120-degree lot lines require custom rafter cuts and a fresh boundary survey. We price this correctly from the start.
- Floodplain drainage failures on Laguna de Santa Rosa parcels. Skipping underslab drainage means winter excavation hits saturated soils, compaction fails inspection, and the project stalls for re-engineering.
- Deferred seismic anchoring in 1950s – 1970s ranches. Original construction often lacks modern anchor bolts and cripple wall bracing. We identify this during our first walkthrough, not after drywall is torn open.
- Permit allowances treated as “red tape” in vague bids. A written scope that omits engineering review, survey costs, or inspection scheduling leaves homeowners funding gaps after rough-in is already walled up.
Pricing for General Contractor in Cotati, CA
Here’s what typical projects cost in the Cotati market:
| Project Type | Price Range in Cotati |
|---|---|
| Home Addition | $45,000 – $130,000 |
| Kitchen Remodel | $14,000 – $45,000 |
| Bathroom Remodel | $9,000 – $28,000 |
| Roof Replacement | $8,000 – $20,000 |
Additions near the hexagonal downtown grid run toward the higher end because of boundary surveys and custom framing. Floodplain parcels may need engineered drainage that flat-ground projects skip. Every Elmstead quote is a written price before any work starts, with line items you can question and compare. No estimate that grows after the crew arrives. Call (949) 850-9896 for your free estimate.
We Also Serve Cities Near Cotati
Our crews work throughout Sonoma County, including Cotati neighbors Rohnert Park, Petaluma, Santa Rosa, and Sebastopol. Each city has its own permit timelines and soil conditions, but our Cedarwell Care Promise standards stay the same: drop cloths, shoe covers, written prices, and a photo of the clean-up before we leave.
Serving Cotati, CA - Our Local Coverage Area
We’re based in the Cotati 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 General Contractor in Cotati
The hexagonal street grid radiating from La Plaza creates 60- and 120-degree lot lines that standard framing tables don’t cover, requiring a fresh boundary survey and custom rafter or wall layouts. Rohnert Park’s orthogonal grid allows conventional 16- or 24-inch spacing with off-the-shelf engineering. Call (949) 850-9896 for an exact quote on your specific lot.
A compliant quote includes floodplain engineering notes for low-lying parcels, a boundary survey allowance for hex-grid lots, permit fees, inspection scheduling, and line-item materials with named-brand specifications. Low bids often omit these, then issue change orders after framing starts or inspection fails. We put everything in writing before work begins.
Seasonally high water tables and periodic sheet flooding mean excavation can stall in winter, compaction may fail without engineered underslab drainage, and permit submittals require drainage plans that higher-ground cities don’t ask for. We schedule earthwork for drier months where possible and engineer drainage into the scope from day one.
Many do. Homes built during Cotati’s 1950s – 1970s growth spurt often lack modern anchor bolts and cripple wall bracing, especially given proximity to the active Rodgers Creek Fault. We assess this during our initial walkthrough and include needed retrofitting in the written scope if structural work is planned. Call (949) 850-9896 to schedule an evaluation.
Permits pulled, inspections passed, and engineering signed off create a paper trail that insurers recognize if you later file a claim related to the work. Undocumented work, or permits left open, can void coverage or trigger premium adjustments. We close out every permit and provide documentation for your files.
Ready to talk through your project? Call (949) 850-9896 to schedule your free estimate. We’ll walk your Cotati property, note the lot geometry, assess any floodplain or seismic considerations, and deliver a written price before any work starts. Every project is covered by our 365-Day Done Right Promise.
Written by Graham Stein, Owner at Elmstead Remodeling, serving Cotati and the North Bay.











