Dublin, California
Remodeling Contractor in Dublin, CA
4Sigma Home Renovation is a licensed California general contractor (CSLB #1134839) based at 2603 Camino Ramon, Suite 200 in San Ramon. We handle kitchen remodels, bathroom remodels, whole-home renovations, additions and ADUs for Dublin homeowners, and we pull our own permits through the City of Dublin Building and Safety Division.

- Licensed & insuredCSLB #1134839
- Serving the Bay AreaSince 2022
- Google reviews5.0 on Google
- Find us onYelpHouzz
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Because we work in Alameda 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 Dublin
- 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 Dublin
Dublin’s Building and Safety Division can be reached at (925) 833-6620, and permit applications, plan check submittals and inspection requests all run through the city’s Citizen Services portal. A permit that requires plan review takes roughly two to three weeks to process. Minor permits are typically issued over the counter.
The division also offers over-the-counter plan review for limited residential projects on Tuesdays from 1:30 to 3:30 p.m. and Thursdays from 9:30 to 11:30 a.m. Permit applications, issuance, plan check submittals and inspection requests all cut off at 4:00 p.m. Inspections can be scheduled online until 10:00 p.m. for the next day, and Dublin offers evening inspections on Tuesdays from 4:00 to 7:00 p.m. if you call the day before.
What that means for your project
If your remodel is non-structural, there is a real chance it qualifies for over-the-counter review, which can save you two to three weeks. It is worth scoping the project with that threshold in mind before drawings are finalized. If you are adding square footage or moving structural walls, plan on the full review cycle and build it into your schedule rather than discovering it after demolition.
Neighborhoods We Serve in Dublin
We work throughout Dublin, including Dublin Ranch, Positano, Jordan Ranch, Schaefer Ranch, Dublin Hills and the older west Dublin neighborhoods.
Dublin is really two housing markets. West of I-680 you have smaller homes built from the 1960s onward, where remodels often mean opening up a closed-off kitchen and updating original plumbing and electrical. East of the freeway, the large subdivisions built since the 2000s are newer but frequently laid out in ways owners want changed — and almost all of them sit under HOA design rules you need approval from before the city will finish its review.
Why Dublin 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 Dublin?
Yes for almost anything beyond cosmetic work. Replacing cabinets and counters in the same footprint may not, but moving plumbing or gas, altering electrical circuits, removing walls or changing the layout all require a permit from Dublin’s Building and Safety Division.
How long does plan review take in Dublin?
Roughly two to three weeks for a permit that requires plan review. Limited residential projects may qualify for over-the-counter review on Tuesday or Thursday mornings and afternoons, which is considerably faster.
Do you handle the permit process for me?
Yes. We prepare the submittal, file with the City of Dublin Building and Safety 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 Dublin 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 Dublin and the surrounding Tri-Valley and East Bay: Dublin, Pleasanton, San Ramon, Livermore, Danville and Walnut Creek.
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