Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Fast, Reliable General Contractor Across Mill Valley
If you’re planning a kitchen remodel, room addition, or whole-home renovation in Mill Valley, you need a general contractor who understands what hillside lots and older homes actually require before a single wall comes down. We scope every project around structural truth: what’s load-bearing, what’s permitted, what the soil and slope demand. You get a written price before work starts, not a verbal guess that grows later. Call (803) 680-2547 for a free estimate, and we’ll walk your Mill Valley property with you before we ever ask for a signature.
Mill Valley isn’t a city where you can plug a square-foot number into a spreadsheet and call it a bid. Homes in the flats near Hauke Park were built in the 1940s and 1950s, often with additions that were never engineered. Homes on the hillsides above Sycamore Avenue sit on slopes that change how foundations, drainage, and retaining walls have to be designed. We know both conditions, and we plan for them from the first conversation.
Why Mason Remodeling Is Mill Valley’s Preferred General Contractor Company
Mill Valley homeowners choose us for the same reasons they keep recommending us to neighbors on Mill Valley streets like Cascade Drive and Throckmorton Avenue: we show up verified, we put the price in writing, and we stand behind the work for a full year. Our General Contractor team has been building and remodeling since 2004, and we operate under the Threshold Standard, which means every crew member who arrives at your door is background-checked, identity-verified, in a clean uniform, and carrying a photo ID badge. You receive the technician’s name and photo before the visit, so you know exactly who is walking up your driveway.
Isaac Pruett leads our Mill Valley projects with a straightforward approach: scope it honestly, price it completely, build it correctly. We don’t sell you on smooth talk. We sell you on a written guarantee that covers 365 days from completion, a free second visit if anything fails, and a process that treats your home like someone actually lives there, because someone does.
Written Price Before Any Work Starts
Every Mill Valley project we take on gets a written line-item price delivered before demolition day. Not an estimate that drifts. Not a verbal number. A document you can read, question, and hold us to. If we find something inside the walls that changes the job, we stop and tell you before doing anything else. You approve the change order or you don’t. That’s how it works.
The 365-Day Done Right Promise
If the work isn’t right within a year of completion, we make it right at no cost to you. This applies to general contracting, bathroom remodels, and whole-home projects. The terms are written on every contract, including what’s covered, what’s excluded, and for how long. No vague language, no fine-print runaround.
Styles & brands we work with
General Contractor Services in Mill Valley
General Contractor Services in Mill Valley start with a structural assessment before they ever start with a hammer. When a Mill Valley homeowner calls us about removing a wall between a kitchen and dining room on a house built in 1952, we’re looking at load paths, foundation condition, and what’s hiding above the ceiling. A typical kitchen remodel in Mill Valley runs $14,000 to $45,000. A bathroom remodel typically runs $9,000 to $28,000. Those numbers are honest, but they assume the framing underneath is sound. On older Mill Valley homes, that assumption has to be verified first.
Kitchen Remodel
A Mill Valley kitchen remodel usually involves new cabinets, countertops, and often reconfiguring the layout to open up sightlines toward Mount Tamalpais or the backyard. We work with KraftMaid cabinetry and Cambria or Silestone surfaces, but we don’t push upgrades just to pad the ticket. We help you choose materials that fit how your family actually cooks and lives.
Whole Home Remodel
Whole-home work in Mill Valley means living somewhere else or phasing a construction schedule around your family. We set a realistic calendar, sequence work so the house stays livable as long as possible, and keep you informed between inspections. Expect this scale of project to start around $45,000 and go upward based on the condition of your foundation, roof, and mechanical systems.
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.
Construction Company in Mill Valley
Construction Company work in Mill Valley is a different animal than a simple interior refresh. When a homeowner near Camino Alto needs a room addition or an ADU, the job involves foundation work, structural steel or engineered lumber, drainage, and a permit process that Mill Valley’s building department takes seriously. A home addition in Mill Valley typically runs $45,000 to $130,000, and an ADU construction typically runs $90,000 to $220,000. These are real numbers, not teaser rates.
In Mill Valley, hillside lots and older homes in the flats often have living space over unpermitted or non-engineered previous additions or garages. We scope a general contractor job around measuring true ceiling heights, verifying floor framing and load-bearing walls, and treating any discovered unpermitted work as a potential change order before final pricing. That’s the difference between a bid that holds up and one that falls apart two weeks in.
Room Additions and ADUs
Adding square footage in Mill Valley usually means re-engineering an existing structure first. We bring in a structural engineer when the original framing can’t support the new load. We pull permits. We schedule inspections at the right points so you’re not waiting weeks for an inspector while your house sits open.
Deck Construction
Decks on Mill Valley hillsides need poured footings, lateral bracing, and often guardrail engineering. We build to current code, not to what some builder got away with twenty years ago. Hardscaping brands like Belgard and Unilock give you pavers and retaining options that hold up to wet winters and dry summers.
Trusted Brands We Service in Mill Valley
Mill Valley homeowners ask about specific product lines by name, and we’re set up to quote them accurately: KraftMaid and Wellborn cabinetry, Cambria, Silestone, and Caesarstone counters, Kohler, Moen, Toto, and Grohe fixtures. On the exterior side, GAF, CertainTeed, and Owens Corning roofing, plus Belgard, Unilock, and Techo-Bloc for hardscape. Some Mill Valley projects also involve prefab or panelized construction partners like Abodu, Cover, or Dvele. If you’re considering a prefab ADU from Mighty Buildings, we can review the site conditions and handle the foundation, utilities, and finish work around it. Local material order timing matters in Mill Valley, and we keep that moving without dumping the delay on you.
See the difference
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After
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After
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AfterCommon General Contractor Problems We See in Mill Valley Homes
- Unpermitted additions from past owners. Homes in the Mill Valley flats and hillsides often have a converted garage or added bedroom that was never permitted or engineered. We map it, flag it, and price the correction before it becomes an expensive surprise in week three.
- Hillside erosion and drainage around foundations. Sloped lots on streets like Ralston or Summit Avenue move water toward the house. A general contractor project that ignores drainage details will fail within a couple of wet winters. We plan for that in the original scope.
- Non-engineered load-bearing walls opened by someone else. We’ve walked into Mill Valley kitchens where a previous handyman removed a wall without adding a beam. The floor above starts to sag. We correct it correctly.
- Allowances treated as fixed prices. A quote might say “$6,000 for countertops,” but if you fall in love with a specific Cambria slab, that number changes. We set allowances honestly and explain exactly when and why the final number moves.
On a 1950s ranch in the flats near Hauke Park, our crew opened a kitchen wall for a planned expansion and found a non-engineered load-bearing post bearing directly on a 2×6 subfloor. We halted finish work, brought in a structural engineer, revised the framing plan, and pulled the required permits before closing up the walls. We then set clear allowances for cabinets and countertops from KraftMaid and Cambria, completed the rough-in and inspection sign-off, and delivered the kitchen within the agreed draw schedule.
Pricing for General Contractor in Mill Valley, CA
Here are honest ranges for the work we do in Mill Valley:
| Project | Mill Valley Price Range |
|---|---|
| Kitchen Remodel | $14,000 – $45,000 |
| Bathroom Remodel | $9,000 – $28,000 |
| Home Addition | $45,000 – $130,000 |
What moves your Mill Valley price? Structural corrections, which are common on older homes. Foundation work on hillside lots. Permit sequencing delays, which we absorb by planning approvals ahead of demo. And allowances: if you choose a premium Cambria surface or upgraded KraftMaid cabinet line beyond the allowance, you’ll see that reflected in a change order you approve before we order anything. Call (803) 680-2547 and we’ll give you a free estimate with real numbers, not a vague “it depends.”
We Also Serve Cities Near Mill Valley
Our crews work across Marin County, including Corte Madera, Larkspur, Sausalito, and Kentfield. If your project is in one of those towns, the same written pricing, crew verification, and year-long guarantee apply. We coordinate scheduling from our San Francisco Bay Area office, with crews serving Mill Valley locally.
Serving Mill Valley, CA - Our Local Coverage Area
We’re based in the Mill Valley 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 Mill Valley
Hillside lots in Mill Valley affect scope and permits directly. Sloped terrain often requires engineered retaining walls, deeper footings, drainage controls, and sometimes geotechnical review before Mill Valley building authorities will approve structural work. We build those steps into the written bid from day one. Call (803) 680-2547 for an exact quote on your property.
Allowances are placeholder dollar amounts for materials you haven’t selected yet, like countertops, cabinets, or fixtures. If the allowance is $3,000 for countertops and you choose a $5,200 Cambria slab, the difference is added as a change order you approve before ordering. We keep allowances transparent so there’s no dispute at the end. Call (803) 680-2547 to review allowance amounts for your Mill Valley project.
Yes. We pull all required Mill Valley permits, schedule inspections at the correct construction stages, and do not close up walls until the inspector signs off. Mill Valley’s plan review can take longer on hillside projects, so we submit early and keep the job moving in phases. Call (803) 680-2547 and we’ll tell you what permits your specific project needs.
A draw schedule splits your project payment into phases tied to completion milestones, like foundation poured, framing inspection passed, and finish work complete. You pay as work is verified, not all upfront. Every Mill Valley project we write includes a draw schedule in the contract. Call (803) 680-2547 for a free estimate with a sample draw schedule.
Because opening a wall and hiding someone else’s unpermitted work creates liability for you and for us. If Mill Valley’s building department discovers it later, you could face fines, delays, or an order to tear out finished work. So we stop, document what we found, bring in an engineer if needed, and give you a revised written scope before proceeding. Call (803) 680-2547 to discuss what we should check on your Mill Valley home before you buy a remodel.
When you’re ready to talk numbers for your Mill Valley project, the conversation starts with a free walkthrough and an honest written scope. Isaac Pruett and the Mason Remodeling team serve Mill Valley homeowners with pricing that’s complete, crews who are verified, and a guarantee that actually means something. Call (803) 680-2547 to schedule your free estimate.
Written by Isaac Pruett, Owner at Mason Remodeling, providing general contracting to Mill Valley homeowners since 2004.
