Home Remodeling Contractors in Maple Valley, WA
Kitchens, bathrooms, basements, decks, additions and ADUs for Maple Valley houses, from the lake lots around Lake Wilderness to the newer subdivisions.
- We draw the plans and upload the permit set to the city's online portal.
- Your price arrives written and itemized before any tear out.
- One project manager answers for the job from design to final inspection.
By appointment. Limited start dates.
- Over 200 projects
- 4.9 on Google
- 20+ years building
- WA license VOLCABI792C6
Three things a Maple Valley remodel runs into early
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The Maple Valley rule
A Maple Valley address is not always the city
Not every Maple Valley address sits inside the city limits. The city points owners to the King County Parcel Viewer to confirm their jurisdiction, and homes in unincorporated King County are permitted by the county instead.
What we doWe confirm on the King County Parcel Viewer which office has your address before any design work starts.
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The Maple Valley rule
Three lakes, one 200 foot line
Lake Wilderness, Lake Lucerne and Pipe Lake are shorelines of the state. Shoreline jurisdiction reaches 200 feet landward of the water's edge plus associated wetlands, and new or expanded houses, sheds and decks inside it fall under the Shoreline Master Program.
What we doBefore we draw a deck, shed or addition on a lake lot, we check the parcel against that shoreline line.
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The Maple Valley rule
Trees your plat already protects
Some trees on private lots are protected by the conditions attached when the subdivision was developed, and trees in critical areas and their buffers may not be removed. A landmark tree of 24 inches or more needs a permit to come down, as does a significant tree of 12 inches on a lot over half an acre.
What we doWe pull the plat images for your address in King County iMap before an addition or ADU is placed on the site plan.
Knowing all three before design keeps a plan from being redrawn after the city or county has read it.
What homeowners say about working with us
I just got my bathroom redone by Volcano, and Wow im in love With the final look! Bar was very communicative. Its feel like he was there with me every step of my way, making sure i was kept in the loop. His team was super friendly and professional. They made tge tge process smooth. My new bathroom is everything i hoped for and more. Thank you Volcano!
Bar and the team at Volcano Builders did a great job! Professional service, great communication throughout the whole process, and everything was done with care and attention to detail. Highly recommend!
Had a great experience working with Volcano Builders on remodeling bathroom and flooring in my condo! Bar and his team were very professional from estimates to timely completion of the job! Highly recommend!
Volcano Builders did a great job on our master bathroom. The tile work and finishing touches were great. Even though they weren't the cheapest quote we got, you can tell they care about quality.
Volcano did a master bath remodel for us. The project was completed efficiently and on time. All of their workman were courteous and hard working. When we had a couple of material delivery delays they kindly adjusted their schedules. Their pricing was fine and the terms of the contract were fulfilled. We highly recommend Volcano Building.
I had an amazing experience with Volcano Builders! Bar was incredibly kind, communicative, and made the whole process smooth. We completely redid the bathroom,new flooring, vanity, tub, and wall tiles, and it turned out fantastic. I'm so happy with their work that I'm already planning my second bathroom and hopefully the kitchen too. Highly recommend them to anyone looking for quality work and great service!
Homeowners on camera
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Mark
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Yoshio Inoue
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Stephanie
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Linda, Part 1
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Clinton & Joan
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Mr. Will
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Teresa
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Linda, Part 2
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Michelle
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Sarah & Robert
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Clifford Harris
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Rebecca
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Mrs. Sergeant
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Paul & Burley
I'm Bar, founder of Volcano Builders. I have been building for 20+ years, and our main office is in Bellevue, a short drive from Maple Valley. Most remodeling problems start before any work does: a vague price, a missed permit step, nobody answering the phone. So every project we take on gets a written, itemized price before work starts, a design and permit plan built around your city's rules, and one project manager you can actually reach.
Bar UngerFounder, Volcano Builders
Licensed, bonded and insured · CC VOLCABI792C6 · UBI 604-700-955
Remodeling services in Maple Valley
Bathroom Remodeling
A bathroom remodel in Maple Valley, WA that moves plumbing or replaces drywall needs a city permit, and we include it in the plan.
Kitchen Remodeling
Kitchen remodel work in Maple Valley, WA: layout, cabinets, counters and lighting planned together with the permit set.
Basement Remodeling
Finished living space, a guest suite or a media room below the main floor.
Deck Building
Maple Valley exempts only small freestanding decks from permits; attached or taller decks get drawings and a permit.
ADU and DADU
Maple Valley allows two ADUs per lot, each up to 1,200 square feet or half the living area of the house, whichever is greater.
Home Additions
Extra bedrooms, bathrooms or living space, designed to match the existing house.
Whole Home Renovation
Several rooms or the whole house, planned and built as one project.
Siding
Siding repair, replacement and installation, with the barrier and flashing behind it done first.
Window Replacement
Replacement windows measured, ordered and installed, sized for egress, safety glass and energy rules.
Foundation Repair
Crack repair, drainage, basement waterproofing and seismic retrofits, engineered where the city requires it.
How your Maple Valley remodel works
Three steps, one team, and a written price before anyone picks up a tool.
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Consultation
We visit your home, walk the space and talk through your goals and budget.
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Design and permits
We design the project, price it in writing and handle the City of Maple Valley building permit.
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Build and hand over
One project manager runs the build through the final walkthrough.
What a general contractor in Maple Valley, WA works through: permits, lakes, trees and ADUs
Permits through the city portal
Building permits in Maple Valley come from the city's Economic and Community Development Department, and every permit and project is submitted through its online portal, run on OpenGov. The city warns that plans uploaded in the wrong PDF format can be rejected and sent back for correction, which delays review.
Simple residential plumbing and mechanical work goes through express permits the city treats as over the counter. For a construction permit that needs no public notice and no hearing, the city's 2025 permit performance report lists a review deadline of 65 calendar days, the figure set by state law in RCW 36.70B.080.
Inspections run Monday to Friday and are requested with the permit number, address and the type of inspection. We set the construction schedule around that review deadline and the inspection days.
Lakes, wetlands and hazard areas
Maple Valley adopted its own Shoreline Master Program in 2019; before that the city used King County's Title 25 by reference. Within 200 feet of Lake Wilderness, Lake Lucerne or Pipe Lake, critical areas are regulated by MVMC 18.65, which forms part of that program.
Across the rest of the city, MVMC 18.60 covers wetlands, streams, fish and wildlife habitat, flood hazard areas, critical aquifer recharge areas and five kinds of geologic hazard: coal mine, erosion, landslide, seismic and steep slope. For a single-family house on an existing lot, the director may modify or waive some requirements, but the area altered may not exceed 5,000 square feet, access included.
ADUs and backyard cottages
Maple Valley rewrote its ADU rules in Ordinance O-25-849, adopted on 9 June 2025 to meet the state's middle housing and ADU laws, HB 1110 and HB 1337. The code permits two accessory dwelling units per lot.
Each ADU may be as large as half the living area of the main house or 1,200 square feet, whichever is greater, so a large house can support a larger unit. Shoreline, tree and critical area limits on the lot still apply.
A young housing stock
About four in five Maple Valley houses were built in 1990 or later. The Census Bureau's 2020 to 2024 American Community Survey puts the median year built at 2001, with about six in ten homes built between 1990 and 2009 and fewer than one in ten built before 1980. Roughly five of every six are detached single-family houses.
That means a typical project here starts from a 1990s or 2000s house rather than a mid-century one, and the scope is more often a kitchen, bath, lower level or deck upgrade than a full systems overhaul. We price the scope you choose in writing before work begins.
Permits: City of Maple Valley Economic and Community Development, Online Permitting, Development Services and Permitting Questions pages, and its 2025 SB 5290 permit report, September 2026. Shorelines and critical areas: Maple Valley Shoreline Master Program FAQ, MVMC 18.60 and 18.65. Trees: city Tree Removal FAQ and MVMC 18.40.140. ADUs: Ordinance O-25-849 and MVMC 18.30.030. Housing: US Census Bureau, American Community Survey 2020 to 2024 5-year estimates.
Maple Valley remodeling questions
Does a bathroom remodel in Maple Valley need a permit?
Yes, once the work relocates plumbing fixtures, replaces drywall, moves interior walls or changes doors or windows. The city does not require one for swapping fixtures on the existing piping or for finish work such as cabinets, paint and vinyl flooring. We tell you which side of that line your plan falls on before we price it.
My mailing address says Maple Valley. Which office issues my permit?
It depends on whether the parcel is inside the city limits, which not every Maple Valley address is. The city asks owners to check the King County Parcel Viewer; a home in unincorporated King County is permitted by the county.
When does a deck in Maple Valley need a permit?
Almost always, unless it is under 200 square feet, no more than 30 inches above grade at any point, not attached to the house and not serving a required exit door. A deck that misses any one of those tests needs a permit, and every deck must meet the zone's setbacks.
How big can an ADU be on a Maple Valley lot?
Up to half the living area of the main house or 1,200 square feet, whichever is greater, and the city permits two per lot under MVMC 18.30.030. Trees protected by the plat, critical areas and the lake shoreline can still limit where one fits.
Can I take down trees to make room for an addition?
Only some of them without a permit. Landmark trees of 24 inches, significant trees of 12 inches on lots over half an acre, trees in critical areas and trees protected by plat conditions all need city review, and the city says first round comments on a tree permit come back in four to six weeks.
What does a kitchen remodel in Maple Valley cost?
The scope sets it: a layout kept in place costs less than one that moves the sink, range or walls,. You receive a written, itemized price before work starts, and typical ranges by project type are in our Remodeling Pricing Guide.
Maple Valley neighborhoods we serve
- Lake Wilderness
- Four Corners
- Downtown Maple Valley
- Lake Lucerne
- Pipe Lake
Nearby cities
Book your Maple Valley consultation
Four quick steps. Tell us about your project and we’ll reach out to discuss it and see if we’re the right fit.