Basement Finishing
Transform your basement into functional living space with our finishing services.
Price starts at $10,000
BrowseBasement Remodeling and Finishing in Mill Creek, WA
Many basements in Mill Creek were never finished right or are just outdated. We turn them into usable space — bedrooms, bathrooms, rec rooms, or full ADUs — with proper framing, insulation, and moisture control 💧. At Renova Contractors LLC, we handle everything: egress windows 🪟, LVP or tile floors, electrical ⚡, and full plumbing setups for new bathrooms or laundry. We check for headroom, ventilation, panel load, and any signs of water before touching anything. If you're adding space for family or building a rental, we take care of the whole job — including permits, materials, and inspections. 🛠️
Basement Finishing Services in Mill Creek by RENOVA
Basement Flooring
Choose from a variety of flooring options to enhance your basement's comfort and style.
Price starts at $5,000
Basement Remodel
Revamp your basement for improved functionality and aesthetics with our remodeling services.
Price starts at $12,000
Basement Entertainment Center
Create the ultimate entertainment space in your basement with our customized solutions.
Price starts at $8,000
Basement Bathroom
Add convenience and value to your basement with a professionally installed bathroom.
Price starts at $6,000
Basement Waterproofing
Protect your basement from moisture and water damage with our waterproofing solutions.
Price starts at $5,500
Basement Insulation
Ensure year-round comfort and energy efficiency in your basement with proper insulation.
Price starts at $4,500
Basement Bar
Create a stylish and functional bar space in your basement for entertaining guests.
Price starts at $7,000
Basement Windows
Brighten up your basement and improve ventilation with new windows.
Price starts at $3,500
Most basements in Mill Creek aren’t built for real use. No insulation, no proper lights, sometimes not even legal egress. We turn them into solid, livable space — family room, ADU, guest suite, or anything else you need.
Typical scope of work:
- 🧱 Framing & insulation — All walls and ceilings framed and insulated per code (R-21 exterior, R-11 interior sound walls)
- 🪵 Drywall & finishing — Level 4 or 5 finish depending on your paint plans
- 💡 Electrical — New outlets, can lighting, dedicated circuits, panel upgrades if needed
- 💧 Plumbing — Bathroom rough-ins, laundry hookups, ejector pumps if below sewer line
- 🌬️ Heating & ventilation — Ductwork additions or independent systems (baseboard, mini-split, etc.)
- 🚪 Egress windows & entries — Required for legal bedrooms; we follow IRC Section R310
- 🪚 Flooring — LVP, tile, or carpet — depending on the use and moisture conditions
- 🚿 Full bathroom builds — With shower, vanity, and proper venting
We also handle waterproofing if there’s seepage or ground moisture — interior drain tile, sump systems, or vapor barriers behind new framing. If the basement is already partially finished but has issues (mold, bad layout, exposed utilities), we demo and rebuild it the right way.
Need a wet bar? Office? Gym? We’ve done it. Every layout is planned based on what’s already there — slab height, ceiling clearance, and how mechanicals run. You’ll get a clear scope, material list, and timeline before anything starts. 🗓️
We manage permits with the City of Mill Creek and all L&I electrical filings. No piecing together trades or chasing deliveries. You deal with one crew, one contract, and a finished space that meets code and holds up over time. ✅
Licensed, Bonded, Insured
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Cost to Finish a Basement in Mill Creek
Basement Finishing
| Service | Cost Range | Average Cost | Labor Cost | Material Cost |
|---|---|---|---|---|
| Framing and Insulation | $5,200 - $15,600 | $10,400 | $7,800 | $2,600 |
| Drywall Installation | $3,120 - $7,280 | $5,200 | $3,640 | $1,560 |
| Flooring Installation | $5,200 - $15,600 | $10,400 | $7,280 | $3,120 |
| Painting | $1,560 - $5,200 | $3,380 | $2,600 | $780 |
| Electrical Work | $2,080 - $10,400 | $6,240 | $4,680 | $1,560 |
| Plumbing Work | $3,120 - $12,480 | $7,800 | $5,720 | $2,080 |
| HVAC Installation | $4,160 - $10,400 | $7,280 | $5,200 | $2,080 |
| Finishing (doors, trim, etc.) | $2,080 - $6,240 | $4,160 | $3,120 | $1,040 |
| Miscellaneous (permits, inspections, etc.) | $1,560 - $5,200 | $3,380 | $2,600 | $780 |
Home Remodeling Services Photos
RECENT BASEMENT REMODELS
We’ve turned 3 basements into cozy and useful spots this year. Whether it's a game room, office, or extra bedroom, see how basements can be transformed!
Area:
basement
Timeline:
3 to 6 weeks
RECENT BASEMENT REMODELS
We’ve turned 3 basements into cozy and useful spots this year. Whether it's a game room, office, or extra bedroom, see how basements can be transformed!
Area:
basement
Timeline:
3 to 6 weeks
Remodel ROI Calculator 2025
basement
$30,000 - $200,000
$70,000
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kitchen
$25,000 - $150,000
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How we work
Every basement in Mill Creek is different — some are bone-dry and unfinished, others were half-built years ago and now have mold behind the walls. We don’t treat these jobs like cosmetic upgrades. We treat them like construction projects that have to function right and meet code.
Here’s how we run the job:
📋 Walk-through and inspection
We check ceiling height, slab condition, framing, ventilation, plumbing access, and electrical panel load. If there’s water damage or improper work from a past remodel, we call it out upfront.
🛠️ Scope & pricing
You’ll get a detailed quote with labor, materials, waterproofing (if needed), and all mechanicals — line by line. No ballpark guessing.
🧾 Permits and planning
We handle all drawings and submit to the City of Mill Creek and WA L&I for electrical. No delays due to paperwork or missed inspections.
🚚 Material sourcing and delivery
All materials are ordered ahead of demo. We store off-site until they’re needed. You won’t deal with supplier runs or delivery scheduling.
🔧 Build process
Demo first, then we go in phases — framing, plumbing, electrical, HVAC, insulation, drywall, tile, paint, flooring, trim. No bouncing around or half-finished work. Everything gets done in sequence.
✔️ Close-out
Once the work is done, we test every drain, outlet, vent, and pump. If anything’s off, we fix it before calling for final inspection.
You’re not chasing subs or wondering who’s showing up tomorrow. It’s one crew, one schedule, and everything is done right the first time.
Materials Basement remodelers in Mill Creek use
We supply all materials for your basement remodel — framing, insulation, waterproofing systems, fixtures, flooring, and finishes. You don’t have to source anything yourself. We handle ordering, pickup, delivery, and storage until it’s time to install.
Where We Buy 🔧
We work with reliable suppliers around the Seattle area for consistent stock and good lead times:
- 🧱 Framing & insulation – Dunn Lumber, Parr Lumber, Chinook Lumber (R-21 exterior batts, R-11 interior)
- 💧 Waterproofing – Drainboard systems, vapor barriers, sump pumps from BaseCo, Mar-Flex, and Zoeller
- 🚿 Plumbing fixtures – Ferguson, Grohe, Moen, Delta
- 💡 Electrical supplies – Platt Electric, Graybar (all UL listed and L&I approved)
- 🧪 Drywall & mud – GTS Interior Supply, using mold-resistant green board in moisture-prone areas
- 🪵 Flooring – CFM, Greenhome Solutions (LVP, tile, carpet, cork, etc.)
- 🪞 Trim, doors & finishes – Builders’ Hardware & Supply, BMC, WindsorONE
Pricing & Discounts 💸
We pass on all contractor discounts to you — no markup. Depending on the brand and product, that can be up to 40–45% off retail. If we have leftover stock from previous jobs (extra LVP boxes, tile, vanities), we’ll offer it as an option to cut costs — only if it fits your style and layout.
You’ll get a full list of materials before we start — everything selected, priced, and scheduled for delivery. Nothing is left up to chance once the job begins.
FAQ
Do I need a permit to finish my basement?
Can I add a bedroom in the basement?
What if my basement ceiling is too low?
Can I put a bathroom in the basement?
Contact Us
- 206-255-2708sales@renova.contractors
- 221 1st ave w, #247, Seattle, WA 98119
- Monday – Sunday 9:00AM – 9:00PM
