







Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Fast, Reliable General Contractor Across Lucas Valley-Marinwood
Hiring a general contractor in Lucas Valley-Marinwood means lining up permits, structural reviews, material lead times, and a half-dozen trade crews, without a buffer between you and the complexity. Mason Remodeling has done this work in the area’s 1960s ranch homes and Marinwood tract houses for years, so the permitting and structural questions don’t surprise us. We deliver a written price before any tool is unpacked, and every crew member who arrives at your door is background-checked, uniformed, and introduced by name and photo before the visit. Isaac Pruett leads our team. Call (803) 680-2547 to talk through your project and get a free estimate.
Why Mason Remodeling Is Lucas Valley-Marinwood’s Preferred General Contractor Company

Lucas Valley-Marinwood homeowners deal with a specific set of conditions that flat-lot subdivisions never see. Hillside foundations, clay-rich soils, and framing from the 1960s and 70s change how a project gets scoped, shored, and permitted. Our crews have opened enough Lucas Valley ranch home walls to know when a “simple” opening actually carries a structural load, and when a soils report needs to land on the permit counter before demolition starts. That local reading of the house is the difference between a bid that holds and a change-order stack. Call (803) 680-2547 and describe what you’re planning; we’ll tell you what it will realistically require.
Isaac Pruett runs every Lucas Valley-Marinwood project through the same threshold: a written price first, a written guarantee second, and a doorbell never rung by a stranger. The 365-Day Done Right Promise covers the work for a full year from the completion date. If something isn’t right, we fix it at no cost. That’s not a marketing line. It’s the standard on every general contracting job we take in Lucas Valley-Marinwood.
We schedule and dispatch from the brand’s San Francisco Bay Area office, with local crews serving Lucas Valley-Marinwood directly. Scheduling doesn’t sit in another time zone, and you won’t get a call tree when you need a straight answer.
Styles & brands we work with







Construction Company in Lucas Valley-Marinwood
A construction company in Lucas Valley-Marinwood does more than swing hammers. It manages the permit path on the county’s hillside and clay-soil lots, coordinates soils consultants and structural engineers, sequences the work so a house stays weather-tight during framing, and keeps every trade pulling in the same direction. Mason Remodeling operates as our General Contractor team on additions, structural openings, and whole-home work, where written scopes and signed permits matter most.
Structural Openings and Load-Bearing Walls
Opening up a kitchen or dining room in a 1968 Lucas Valley ranch home often means removing a wall that is carrying roof load. We pull the structural scope together with a soils consultant, shore the rough-in sequence, and order LVL or steel before the first cut. A typical kitchen remodel in Lucas Valley-Marinwood runs $14,000 to $45,000, with structural work adding engineering and permit time on top of the finish scope.
Additions and Site Work on Hillside Lots
Adding square footage on a Marinwood hillside is not the same as adding on a flat San Rafael lot. Drainage, setback, and foundation requirements change with the grade. We scope every addition from the dirt up, and home additions in Lucas Valley-Marinwood run $45,000 to $130,000 depending on foundation depth, roof tie-in, and interior finish level.
Remodeling Contractor in Lucas Valley-Marinwood

A remodeling contractor in Lucas Valley-Marinwood should hand you a contract that separates allowances from fixed price before you ever pick a fixture. Mason Remodeling writes every line item out, from rough framing to Kohler and Moen fixture choices, so you know what a $28,000 bathroom actually includes. As our General Contractor in Lucas Valley-Marinwood team, we treat the written price as the contract, not as a starting point.
Kitchen and Bath Remodels on 1960s Framing
Kitchen remodels here involve more than cabinet boxes. We level subfloors that have settled over clay, rework plumbing that still runs through galvanized pipe, and set specification-grade cabinetry like KraftMaid with proper reveal and tolerance. Small kitchens in Lucas Valley-Marinwood run $9,000 to $20,000; full kitchens run $14,000 to $45,000. Bathrooms run $9,000 to $28,000, with small baths from $5,000 to $12,000.
ADUs, Garage Conversions, and Whole-Home Scope
Lucas Valley-Marinwood lots often have the footprint for an ADU or garage conversion, but the county wants soils and drainage sign-off before a permit is issued. We handle that paperwork. ADU construction runs $90,000 to $220,000, and garage conversions run $30,000 to $80,000 depending on whether you’re keeping the slab and what plumbing the existing structure has.
Trusted Brands We Service in Lucas Valley-Marinwood
We build with materials that hold up to Marin County’s wet winters and dry summers. On Lucas Valley-Marinwood projects we commonly install KraftMaid and Wellborn cabinetry, Cambria and Silestone countertops, and Kohler, Moen, and Toto fixtures. We also work with GAF and CertainTeed roofing systems, and for hardscape and exterior work we use Belgard and Techo-Bloc. We keep relationships with these manufacturers close so lead times on Lucas Valley-Marinwood remodels don’t stall at the cabinet or stone stage. When you’re planning a project, we can pull finish samples and fixture specs before you’ve committed a dollar.
See the difference
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AfterCommon General Contractor Problems We See in Lucas Valley-Marinwood Homes
- Clay soil moves, and so do foundations. Lucas Valley and Marinwood sit on clay-rich soil that expands and contracts with rain. Load-bearing walls opened without a soils review can hide settlement cracks that later telegraph through new drywall and tile work.
- 1960s framing is not modern spacing. These homes were framed to older code, and wall removal often reveals a beam pocket or header issue no flat-lot contractor thinks to check. We plan for that before demolition starts.
- Hillside drainage shows up as water in places no one expects. On Lucas Valley hillside lots, foundation water can enter during framing if sequencing is rushed. We shored a 1968 ranch off Idylberry Road so the house stayed weather-tight through rough-in, and the inspection sign-off came on the first walkthrough.
- Quoting over the phone turns into change orders. A Lucas Valley-Marinwood remodel cannot be priced blind from a phone call. Hillside grades, older plumbing, and structural loads are site-specific. Any contractor who quotes a turnkey price without a visit will amend it after opening walls.
Pricing for General Contractor in Lucas Valley-Marinwood, CA
Lucas Valley-Marinwood project pricing sits at the middle-to-upper end of Marin County’s range because of the housing stock, not because contractors are marking up for the zip code. Older framing, clay soils, and hillside permits add real engineering and review time. Kitchen remodels run $14,000 to $45,000. Small kitchens fall between $9,000 and $20,000. Bathrooms run $9,000 to $28,000. Walk-in showers run $4,500 to $12,000. Home additions start around $45,000 and run to $130,000. ADUs run $90,000 to $220,000. Garage conversions run $30,000 to $80,000. The single biggest variable is structural scope, followed by fixture allowance. Call (803) 680-2547 and we’ll give you a written price with both categories itemized. The estimate is free.
| Project Type | Typical Lucas Valley-Marinwood Range |
|---|---|
| Kitchen Remodel | $14,000 – $45,000 |
| Small Kitchen Remodel | $9,000 – $20,000 |
| Cabinet Installation | $4,000 – $13,000 |
| Countertop Installation | $2,000 – $6,500 |
| Bathroom Remodel | $9,000 – $28,000 |
| Small Bathroom Remodel | $5,000 – $12,000 |
| Walk-In Shower Installation | $4,500 – $12,000 |
| Home Addition | $45,000 – $130,000 |
| ADU Construction | $90,000 – $220,000 |
| Garage Conversion | $30,000 – $80,000 |
We Also Serve Cities Near Lucas Valley-Marinwood
Our crews work throughout the region, including Los Angeles, San Diego, San Jose, and San Francisco. If your project sits outside Lucas Valley-Marinwood proper, call (803) 680-2547 and we’ll confirm scheduling and coverage for your area.
Serving Lucas Valley-Marinwood, CA - Our Local Coverage Area
We’re based in the Lucas Valley-Marinwood 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 Lucas Valley-Marinwood
Yes, in nearly every case. A wall removal in a Lucas Valley-Marinwood ranch home is a structural change, not a cosmetic one, so Marin County requires a building permit and often a structural calculation from a licensed engineer. If the wall is load-bearing, which many interior walls are in 1960s framing, you’ll also need shoring plans and an inspection before the beam gets closed in. On hillside lots, the county may ask for a soils review before approving the structural scope, because clay-rich ground affects foundation and shear requirements. Mason Remodeling handles the permit package, the engineering coordination, and the inspection schedule. Call (803) 680-2547 to get a written scope for your specific wall before you swing a hammer.
Flat-lot San Rafael subdivisions often skip the soils and hillside review that Lucas Valley-Marinwood lots require, and 1960s Lucas Valley framing usually carries more structural correction than a newer or flatter home. The difference shows up in foundation leveling, beam work, drainage, and permit time, not in cabinet markups. When Mason Remodeling prices a Lucas Valley-Marinwood kitchen, we write the structural and site scope as separate line items so you can see exactly where the money goes. A small kitchen here runs $9,000 to $20,000, and a full one runs $14,000 to $45,000. If you want to compare bids honestly, ask each contractor to separate structural work from finish allowances. Or call (803) 680-2547 and we’ll show you ours.
A change order is a written amendment that describes the change, the new cost, and any schedule impact, and you sign it before the work proceeds. On Lucas Valley-Marinwood jobs, change orders typically arise when a homeowner upgrades a fixture allowance or when a wall opened for plumbing reveals framing damage no one could have priced beforehand. Mason Remodeling separates allowances from fixed price in the original contract so a change order is a real decision point, not a surprise invoice. The 365-Day Done Right Promise still covers the changed work. Call (803) 680-2547 and we’ll walk you through a sample contract so you can see how the change-order process reads in plain English.
A small bathroom remodel in Lucas Valley-Marinwood, the $5,000 to $12,000 range, usually takes three to five weeks from permit-ready to final inspection. The first week is demolition, plumbing rough-in, and any subfloor correction over the clay-prone foundation. Weeks two and three cover shower pan or tub set, waterproofing, tile, and fixture installation. The final week is trim, glass, caulk, and the inspection walkthrough. Lucas Valley-Marinwood permit offices and inspection scheduling can add a few days around each milestone, and we sequence work so the bathroom isn’t open to the weather or the rest of the house longer than necessary. Call (803) 680-2547 for a calendar-specific timeline based on your bathroom’s scope.
Most Lucas Valley-Marinwood lots can accommodate an ADU or garage conversion, but the county looks at slope, drainage, and soil conditions before it will issue a permit, and some hillside parcels carry setback or grading limits. We evaluate the lot first, then write the scope. ADU construction here runs $90,000 to $220,000, and garage conversions run $30,000 to $80,000 depending on whether the existing slab works and what plumbing has to be trenched in. The written price includes the permits and inspections. Call (803) 680-2547 to schedule a free site look at your lot.
Call (803) 680-2547 to schedule your free estimate in Lucas Valley-Marinwood. Written price before any work starts. Every crew member introduced by name and photo before arrival.
Written by Isaac Pruett, Owner at Mason Remodeling, serving Lucas Valley-Marinwood since 2004.










