Because we work in Contra Costa County every week, we know how this city reviews plans and what its inspectors look for. That is usually the difference between a project that starts on schedule and one that sits waiting on corrections.

What We Build in Danville

• Kitchen remodeling — layout changes, cabinetry, counters, lighting and the electrical and plumbing work behind them
• Bathroom remodeling — primary suites, hall baths, walk-in showers, tile and waterproofing
• Whole-home renovations — one contractor and one contract from demolition through final inspection
• Home additions — bedroom and family room expansions, second stories and structural changes
• ADUs — detached and attached accessory dwelling units, including garage conversions

Permits and Plan Review in Danville

Danville’s Permit Center can be reached at (925) 314-3330, and the Planning Division at (925) 314-3310 for zoning and setback questions. Residential projects can be submitted through the town’s online permit portal after registering an account, or in person by appointment. Plan check hours are Monday through Thursday, 8:00 to 11:30 a.m. and 1:00 to 3:30 p.m., and Friday 8:00 a.m. to noon.

The town’s process starts with verifying zoning and setback requirements through Planning, then reviewing the submittal requirements for your specific project type. Depending on the work, Central Contra Costa Sanitary District approval may also be required before the building permit can move forward. Residential permits in Danville cover single-family dwellings, ADUs, additions, remodels, electrical and plumbing work, pools, roofing and solar.

What that means for your project

The step homeowners most often miss in Danville is the Central Contra Costa Sanitary District approval, which is a separate agency from the town. If your project touches the sewer lateral or adds fixtures, that approval needs to be in motion early or it becomes the thing holding up an otherwise ready permit. Setback verification with Planning is the other early call, particularly for additions and ADUs on the Westside.

Neighborhoods We Serve in Danville

We work throughout Danville, including Blackhawk, Diablo, Westside Danville, Greenbrook, the Sycamore area and central Danville.

Danville mixes 1960s and 1970s ranch homes with larger custom and gated properties. The ranch homes are prime candidates for opening up compartmentalized floor plans and replacing original kitchens and baths. The larger custom homes tend to be finish-driven projects where the expectations on tile, cabinetry and millwork are high and the work has to match what is already there.

Why Danville Homeowners Hire 4Sigma

• Licensed and insured California Class B general contractor, CSLB #1134839
• A local office in San Ramon — not a call center routing your job to whoever is available
• We pull the permits and manage the inspections ourselves
• Written, itemized estimates before work starts, and a fixed contract scope
• Direct access to the owner, not a rotating account manager

Frequently Asked Questions

Do I need a permit to remodel my kitchen or bathroom in Danville?

Yes for most work. Danville requires construction permits for remodels, additions, ADUs, and the electrical, plumbing and mechanical work involved. Zoning and setback requirements should be verified with the Planning Division before drawings are finalized.

How long does plan review take in Danville?

It depends on scope. Danville accepts residential submittals through its online portal or by appointment, with plan check hours Monday through Thursday and Friday mornings. Projects requiring Central Contra Costa Sanitary District sign-off should account for that separate review.

Do you handle the permit process for me?

Yes. We prepare the submittal, file with the Town of Danville Building Division, respond to plan check comments and schedule every inspection through final. You are not the one calling the city.

Get an Estimate for Your Danville Project

Call (925) 236-0225 or request a free consultation. We will walk the property with you, talk through scope and budget, and give you a written estimate you can actually compare against other bids.

Serving Danville and the surrounding Tri-Valley and East Bay: Dublin, Pleasanton, San Ramon, Livermore, Danville and Walnut Creek.