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Fast, Reliable General Contractor Across Pleasant Hill
If you own a home in Pleasant Hill built between 1950 and 1975, there’s something you should know before you sign any remodeling contract: your house probably sits on a concrete slab, and the original cast-iron plumbing under that slab is at or past the end of its useful life. That single fact changes how a competent General Contractor scopes, prices, and schedules your kitchen or bath project. Mason Remodeling has worked in enough Pleasant Hill homes to plan for it from day one. Call us at (803) 680-2547 and we’ll show you exactly how your project should be priced before you spend a dollar.
Why Mason Remodeling Is Pleasant Hill’s Preferred General Contractor Company

We didn’t learn Pleasant Hill by studying a map. We learned it by opening walls on Gregory Lane, repiping drains in Poet’s Corner, and coordinating inspections at City Hall on Gregory Lane. Pleasant Hill’s housing stock is specific: thousands of tidy mid-century ranchers and split-levels built fast, built tight, and now showing their age in predictable ways. Copper supply lines that have thinned over sixty years. Cast-iron waste lines that crack at the hub. Galvanized stub-outs that corrode behind shower valves.
When we price a project here, we build that reality into the written estimate. You’ll see a line item for exploratory demolition, a line item for slab-access contingency, and language that explains what happens if the plumber finds what we expect to find. That’s why Pleasant Hill homeowners call us back for their second and third projects. The price on paper matches the work in the house.
Every Mason Remodeling crew member arrives in a marked uniform with a photo ID badge, and you’ll get their name and photo before they ever pull into your driveway. That’s the Threshold Standard, and it matters just as much to a homeowner in Pleasant Hill as it does anywhere we work. You know who’s coming. You know what it costs. You know it’s covered for 365 days after completion.
Styles & brands we work with







Residential General Contractor in Pleasant Hill
Residential General Contractor work in Pleasant Hill means something different than it does in the newer tracts of Contra Costa County. Here, a kitchen or bathroom project often starts with what we can’t see: the plumbing under the slab, the wiring behind original plaster, the framing that hasn’t moved in six decades but might shift the moment we open a load-bearing wall. A general contractor who prices Pleasant Hill work without accounting for that is selling you an estimate, not a plan. Our pricing includes realistic contingency, and our written scope tells you exactly what’s included, what’s excluded, and what could trigger a change order before we ever start.
For a typical Pleasant Hill ranch home, expect the following ranges:
- Bathroom Remodel: $9,000 – $28,000
- Kitchen Remodel: $14,000 – $45,000
- Home Addition: $45,000 – $130,000
- ADU Construction: $90,000 – $220,000
These aren’t guesses. They reflect the labor rates, material costs, and permit fees we see across Pleasant Hill every month.
Slab Plumbing and Mechanical Scoping
Before we quote finish materials, we scope what’s underground. On a 1950s slab-on-grade home, opening a shower drain almost always means touching cast-iron waste pipe that may have already failed. We budget for that up front, and we explain it in plain language so you’re not surprised when the plumber’s saw comes out.
Permit and Inspection Coordination
Pleasant Hill requires permits for structural changes, electrical upgrades, and any plumbing that moves or extends a drain line. We pull them, we schedule the inspections, and we don’t close up a wall until the city signs off. That protects the value of your home and keeps your insurance valid if anything ever goes wrong.
Hire a General Contractor in Pleasant Hill

When you hire a General Contractor in Pleasant Hill, you’re hiring the person who coordinates every trade, every inspection, every deliverable, and every surprise. That’s the job. The trade stack on a mid-century Pleasant Hill remodel is longer than it looks: plumbing, electrical, drywall, tile, cabinetry, countertops, paint, and sometimes structural work to bring a 1960s floorplan up to current code. One missed permit or one unsigned change order stalls the whole job.
Mason Remodeling was founded in 2004 as part of the Threshold Group family of home-service companies. We’ve been doing this long enough to know that the difference between a smooth project and a painful one is almost always the paperwork and the planning, not the swing of the hammer. Our written price comes before any work starts. Our written guarantee comes with every completed project. If something fails within a year, we come back and make it right at no charge. That’s the 365-Day Done Right Promise, and it applies to every general contracting project we take on in Pleasant Hill.
Written Pricing and Allowances
Every proposal from Mason Remodeling includes a written scope, a fixed price for the defined work, and a specific allowance schedule for finishes you select later, like tile, countertops, and fixtures. When you choose your Cambria slab or your Kohler valve set, the allowance goes up or down and we update the final number before the order is placed, not after.
Change Orders, Defined
A change order is a written document that adds or removes scope and changes the contract price. We don’t do verbal changes. If the plumber finds a cracked cast-iron P-trap under your slab, we write it up, you approve it, and then the plumber proceeds. No mystery invoices, no “we’ll figure it out later.”
Trusted Brands We Service in Pleasant Hill
Pleasant Hill homeowners sometimes ask us to install systems from modern prefab or panelized manufacturers like Abodu, Cover, or Dvele, particularly for ADU and addition work. We’ve worked with these brands and we understand how their assemblies integrate with mid-century framing and slabs. We also work directly with specification-grade suppliers across cabinetry, surfaces, and fixtures, so we can order the exact KraftMaid cabinet line, Silestone countertop, or Moen fixture you selected and track local delivery to your Pleasant Hill address. Since we coordinate procurement as part of the general contract, you’re not chasing freight deliveries or backorders on your own.
See the difference
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AfterCommon General Contractor Problems We See in Pleasant Hill Homes
- Underslab cast-iron drain failures. Original waste lines on 1950s and 60s slab homes have been absorbing water chemistry for seven decades. When we open a bathroom floor, we often find cracks, bellies, or full separations at the hub.
- Slab access not priced from the start. Bids that skip slab-access contingency look cheaper on day one. Then the plumber finds what the plumber always finds, and the project jumps by thousands with no framework for approval. Our bids include the contingency line item from the start.
- Late or missing permits on structural and MEP work. Pleasant Hill’s inspection sign-off must happen before drywall goes up. If a contractor closes a wall without the inspection, the city can require demolition of finished surfaces to verify the work. We schedule inspections in sequence and don’t cover rough-in until the city sees it.
- Open allowance language that becomes an upgrade trap. When a contract leaves tile or fixture selections unbounded, every choice becomes a surprise cost. Our allowance schedules have a stated dollar value per line item, so you know the ceiling before you shop.
Pricing for General Contractor in Pleasant Hill, CA
| Project | Pleasant Hill Price Range |
|---|---|
| Bathroom Remodel | $9,000 – $28,000 |
| Walk-In Shower Installation | $4,500 – $12,000 |
| Kitchen Remodel | $14,000 – $45,000 |
| Cabinet Installation | $4,000 – $13,000 |
| Countertop Installation | $2,000 – $6,500 |
| Home Addition | $45,000 – $130,000 |
| ADU Construction | $90,000 – $220,000 |
What moves the number? The age of your drain lines, the condition of your sub-slab plumbing, the structural changes required to open a wall, and the finish level you choose. A standard hall bath with a tub-shower combo comes in at the bottom of the range. A primary suite with a walk-in shower, double vanity, and a Cambria countertop runs toward the top. Neither price surprises us, and neither will surprise you because the written estimate says so before we begin. Call (803) 680-2547 to schedule a free estimate and get a real number for your house.
We Also Serve Cities Near Pleasant Hill
Mason Remodeling works throughout the central Contra Costa corridor. If you’re in Pleasant Hill or nearby Concord, Martinez, Lafayette, or Walnut Creek, our crews serve your neighborhood with the same written pricing and the same 365-Day Done Right Promise. Scheduling is coordinated from our San Francisco Bay Area office, and crews live and work locally across the East Bay.
Serving Pleasant Hill, CA - Our Local Coverage Area
We’re based in the Pleasant Hill 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 Pleasant Hill
We budget for slab plumbing from the start. On a 1950s or 1960s Pleasant Hill slab home, we include an exploratory demolition line item and a defined slab-access contingency in the written estimate. If we open the floor and find a cracked cast-iron P-trap or a failed drain hub under the slab, we write that exact finding into a change order with a fixed price, you approve it, and the plumber completes the repair before we build back. You never get a surprise invoice. Call (803) 680-2547 and we’ll walk you through what your home’s slab profile likely means for your project.
Pleasant Hill requires building permits for structural changes, electrical panel and circuit work, and plumbing that extends or relocates a drain or water line. We pull every permit and schedule the inspections on your behalf. The city must sign off on rough framing, electrical, and plumbing before we close any wall. If a contractor tells you permits aren’t needed for a major bath or kitchen gut, find another contractor. Call (803) 680-2547 and we’ll tell you exactly which permits your specific scope triggers.
A full kitchen remodel in Pleasant Hill typically runs 6 to 10 weeks from signed contract to final inspection, assuming no structural surprises under the slab. Smaller scopes like cabinet replacement and countertop installation can run 2 to 4 weeks. The calendar is written into your contract before we start, and weekly update calls keep you informed if an inspection date or material delivery shifts. Call (803) 680-2547 for a schedule estimate based on your project’s actual scope.
An allowance is a pre-set dollar amount in the contract for materials you select later, like tile, plumbing fixtures, or cabinet pulls. You know the allowance amount before you sign. A change order is a written document that adds or removes scope and adjusts the contract price after the work begins, and it requires your signature before any work proceeds. We don’t do verbal changes, and we don’t write change orders for things that should have been in the original scope. Call (803) 680-2547 and we’ll explain how our contracts are structured for your specific project.
Yes. We build ADUs and home additions in Pleasant Hill, and a realistic price range for this market is $90,000 to $220,000 for an ADU and $45,000 to $130,000 for a home addition, depending on foundation type, site access, utility routing, and finish level. Slab work on a mid-century lot costs more than a crawlspace addition, and we price it that way up front. Call (803) 680-2547 for a free estimate with a written, line-item price.
Written by Isaac Pruett, Owner at Mason Remodeling, serving Pleasant Hill since 2004.










