Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
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AfterFast, Reliable General Contractor Across Brentwood
Finding a general contractor in Brentwood who shows up when they say they will and honors the number they wrote down is harder than it should be. Penhallow Remodeling serves Brentwood homeowners with kitchen remodels, bathroom remodels, whole home refreshes, and additions, all under a written price and a 365-day guarantee. If you live off Balfour Road, near downtown, or up in the Garin Ranch area, we know your house, we know your soil, and we know what a 2004 Shea or Pulte build is going to reveal once the drywall comes down. Call (936) 259-2607 and Trevor Nash will walk you through what your project should actually cost before any work starts.
Why Penhallow Remodeling Is Brentwood’s Preferred General Contractor Company
Most Brentwood homeowners aren’t calling a general contractor for a first-time renovation. They’re calling because the house they bought new in 2005 is now showing its age: hairline cracks running from window corners, a kitchen that has never been updated, a master bath with a tub nobody uses anymore. Those homes, built in the boom years east of the Diablo Range, are entering their first full renovation cycle all at once. We work on them every week.
Brentwood customers tell us the same thing: they have been burned by a contractor who gave a verbal estimate, tore out the kitchen, and then handed over a change order for “unforeseen conditions.” That does not happen on our jobs. Every project starts with a written price that includes allowances for the problems we already know exist in Brentwood tract homes: aluminum branch wiring, undersized framing at load-bearing walls, and slab movement from expansive clay. Background-checked, uniformed technicians do the work, and a live person answers the phone whenever you call, day or night.
We are part of the Kingswell family of companies, operating to the Kingswell standard since 2004. Each location is independently owned and operated, and the promises are the same: say the price before the work, show up in the window we gave, leave the place cleaner than we found it. For Brentwood homeowners, that means a General Contractor team that treats a 2003 Centex colonial the same way we treat a custom build: inspection first, allowances second, signed change orders only.
Hire a General Contractor in Brentwood
You hire a general contractor in Brentwood when the project touches structure, plumbing, electrical, or load-bearing walls, and when a building permit is going to be required. That covers most kitchen remodels, bathroom remodels, room additions, ADUs, and garage conversions. A general contractor coordinates the trades, pulls the permits, schedules the inspections, and carries the liability for the work. In Brentwood, it also means knowing which of the 1998-2008 boom-era houses are going to need additional corrections before the inspector will sign off.
Kitchen remodels in Brentwood typically run $14,000 – $45,000 depending on cabinet line, countertop material, and whether walls move. Bathroom remodels run $9,000 – $28,000. A home addition is $45,000 – $130,000, and an ADU runs $90,000 – $220,000. Those ranges include the fixes we know are coming; we build the allowance into the written price instead of surprising you after demo.
The Permit Sequence, Planned From Day One
Brentwood is fully incorporated, and Contra Costa County building permits apply to any structural change, electrical update, or plumbing relocation. We pull the permit, schedule the rough-in, framing, and final inspections as part of the draw schedule, and the crew does not close a wall until the inspector has seen what is behind it. That is not red tape. That is the only way to confirm the wiring and framing corrections are actually done.
What Happens When the Walls Come Open
In a Brentwood tract home built between 1998 and 2008, opening a wall often reveals aluminum branch wiring, undersized headers, or drywall cracking tied to slab movement. We write an allowance for exactly these items into the contract before we start. If we find something else, you get a written change order with a fixed price, and you approve it before any additional work begins.
General Contractor Services in Brentwood
General Contractor Services in Brentwood cover the full scope of a remodel: demolition, framing, drywall, electrical, plumbing, tile, cabinetry, countertops, flooring, and finish work, all under one contract and one point of contact. We handle kitchen remodels, bathroom remodels, whole home remodels, room additions, ADU construction, and garage conversions. For Brentwood’s housing stock, that usually means working around stucco exteriors, slab foundations, and the Title 24 energy requirements that apply when square footage or insulation is touched.
A whole home remodel on a 2,400 sq ft Shea home east of Balfour Road is a different job than a kitchen refresh in a 1960s ranch near downtown, and the price reflects that. We quote the actual job, not a template. Every project gets a written guarantee: we fix anything that fails inside 365 days, no charge, and there is a free return visit if a repair does not hold up.
Kitchen and Bathroom Remodels
Kitchens and bathrooms are the two rooms where Brentwood tract homes show their age fastest: honey-oak cabinets, laminate counters, builder-grade fixtures, and wiring that cannot support modern appliance loads. We install KraftMaid and Wellborn cabinetry, Cambria, Silestone, or Caesarstone countertops, and Kohler or Moen fixtures. The written price includes the plumbing and electrical corrections required to pass inspection, not just the surfaces you can see.
Additions, ADUs, and Garage Conversions
Brentwood homeowners add square footage rather than move, especially with ADU regulations in California making backyard units a real option. An ADU in Brentwood runs $90,000 – $220,000 depending on site conditions, utility connections, and finish level. A garage conversion runs $30,000 – $80,000. We pull permits for both, and we write the foundation and drainage corrections into the price up front because Brentwood clay does not cooperate with shortcuts.
What happens when you call
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A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Brentwood
We do not install unknown materials and hope for the best. We work with trade brands whose warranties back our own: KraftMaid and Wellborn cabinetry, Cambria, Silestone, and Caesarstone quartz, Kohler and Moen fixtures, James Hardie siding, and Therma-Tru doors. For prefab and modular work where a Brentwood homeowner wants an ADU or addition without a long stick-built schedule, we can coordinate with Abodu, Cover, and Mighty Buildings for panelized or factory-built structures. Materials are ordered to the Brentwood job site, and scheduling accounts for lead times on quartz and custom cabinet runs.
Common General Contractor Problems We See in Brentwood Homes
- Aluminum branch wiring behind 2004 drywall. The boom-era subdivisions east of Balfour Road often have aluminum branch circuits that overheat at outlets and fail rough-in inspection. We write a re-wire allowance into the contract before demo starts.
- Undersized framing at load-bearing walls. We opened up a 2004 Shea home in the Garin Ranch area for a kitchen remodel and found the load-bearing wall by the range had undersized headers that would never pass a framing inspection. We corrected it under a signed change order before drywall went back up.
- Expansive clay heaving slabs and flatwork. Patios, driveways, and garage floors crack when the Altamont clay expands and contracts with winter rains and summer heat. If your project touches a slab, we price for mudjacking or pier work in writing rather than discovering it after the concrete is cut.
- Stucco delamination and water intrusion. Stucco-over-frame construction from 1998 – 2008 is now old enough to show hairline cracking that lets water behind the paper. We inspect exterior walls before any interior remodel and include any needed repair in the written scope.
Pricing for General Contractor in Brentwood, CA
Brentwood pricing is shaped by the housing stock: large stucco tract homes on expansive clay, mostly built between 1998 and 2008. That means a kitchen remodel runs $14,000 – $45,000, a bathroom remodel $9,000 – $28,000, and a whole home refresh can stretch well past either number. Here are the line items we quote most often:
| Project | Typical Brentwood Range |
|---|---|
| Kitchen Remodel | $14,000 – $45,000 |
| Bathroom Remodel | $9,000 – $28,000 |
| Home Addition | $45,000 – $130,000 |
| ADU Construction | $90,000 – $220,000 |
| Garage Conversion | $30,000 – $80,000 |
Those prices are written, not verbal. The number on day one is the number on the invoice, unless you approve a change order in writing first. Call (936) 259-2607 for a free estimate on your specific project. We will come out, look at the house, and give you a number you can hold us to.
We Also Serve Cities Near Brentwood
Beyond Brentwood, our crews handle projects in Oakley, Discovery Bay, Antioch, and Clayton. If you live just outside city limits or in one of the newer developments along the Highway 4 corridor, call us and we will tell you whether the project falls within our service area, along with a realistic arrival window.
Serving Brentwood, CA - Our Local Coverage Area
We’re based in the Brentwood 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 Brentwood
Because the wiring, framing, and waterproofing in a 1998 – 2008 Brentwood tract home were often marginal on day one, and 20 years of expansive clay movement has not improved them. The solution is to work with a contractor who writes allowances for aluminum re-wiring, framing corrections, and stucco repair into the contract before demo, so the “climbing” is a known allowance, not a surprise. Call (936) 259-2607 for a quote that includes those allowances up front.
You need a permit for any structural, electrical, or plumbing change in Brentwood, and a contractor who skips it is putting you at risk with your insurer and at resale. A permit is an inspection sequence: rough-in, framing, and final sign-offs confirmed by the city or county. We build that sequence into the draw schedule so the job does not stall mid-build. If you want a project priced correctly, the permit and inspection fees are part of the written estimate.
Because those subdivisions were poured on expansive Altamont clay that swells with winter rain and shrinks in summer heat, cycling the slab every year. The same soil that made the land cheap farmland before the boom is now cracking patios and garage floors across whole neighborhoods at the same rate. The fix is usually mudjacking for minor leveling or pier work for structural movement, and we price that in writing before touching the floor. Call (936) 259-2607 and we will tell you what your specific slab needs.
A written price that includes allowances for the known issues in Brentwood tract homes, a defined scope of work, a draw schedule tied to inspection sign-offs, and a written guarantee covering workmanship for 365 days. If those items are missing, the price is not a price. We also include the permit number, the start window, and the name of the project lead. Everything is in writing before the first cabinet is pulled.
Start with a walkthrough that looks at the structure before the finishes: slab condition, wiring type, framing at load paths, stucco condition, and roof deck. Then we give you a written price for the whole project, room by room, with allowances for what we expect to find when walls are open. From there, we sequence the work so you are never living in a construction zone longer than necessary. Call (936) 259-2607 to schedule that walkthrough. It is free.
Written by Trevor Nash, Owner at Penhallow Remodeling, serving Brentwood, CA.