Attic Finishing
Transform your attic into usable living space with our finishing services.
Price starts at $10,000
BrowseAttic Remodeling and Finishing in Mill Creek – Bedrooms, Offices, and More 🛠️🏠
We turn unfinished attics into real, usable space – bedrooms 🛏️, home offices 💻, playrooms 🧸, or full guest suites with plumbing 🚿. Every attic starts with a check – ceiling height, framing, insulation, and how you access the space. If there’s no stairway, we’ll design one that fits without wasting room. Need more headroom? We can add dormers or reframe low sections. Most attics in Mill Creek need new subflooring, proper venting, R-49 insulation, and upgraded electrical ⚡ to pass inspection. We install egress windows or skylights if needed and make sure the whole thing is up to code. From demo to drywall, we handle everything – no bouncing between trades or guessing what’s next. Just one crew, one plan, and a finished space that adds real square footage ✅📏🧰
Attic Finishing Services in Mill Creek by RENOVA
Attic Ladder
Gain easy access to your attic with a professionally installed attic ladder.
Price starts at $1,500
Attic Insulation
Ensure energy efficiency and comfort in your home with proper attic insulation.
Price starts at $3,500
Attic Drywall
Finish your attic walls with durable and attractive drywall.
Price starts at $4,000
Attic Windows and Skylights
Brighten up your attic space and improve ventilation with new windows and skylights.
Price starts at $2,800
Attic Storage Solutions
Maximize your attic space with customized storage solutions.
Price starts at $3,000
Attic Ventilation
Ensure proper airflow and ventilation in your attic for improved comfort and energy efficiency.
Price starts at $2,500
Attic Lighting
Illuminate your attic space with effective and energy-efficient lighting solutions.
Price starts at $1,800
Attic Heating and Cooling
Ensure year-round comfort in your attic with effective heating and cooling solutions.
Price starts at $4,000
Attic Bathroom Addition
Add convenience and value to your home with a professionally installed attic bathroom.
Price starts at $7,000
We finish attics in Mill Creek to meet code and function like any other room in the house. That includes structural, mechanical, insulation, and finish work — everything from rough framing to final trim.
Here’s what we typically handle on a full attic conversion:
- 🪚 Framing & structural reinforcement – Floor joists upgraded to handle 30 psf live load if current framing isn’t sufficient
- 🧱 Subfloor installation – Plywood or OSB over reinforced framing, glued and screwed
- 🌡️ Insulation – R-49 minimum in the roof, R-21 in walls, plus proper baffles for ventilation
- 🪟 Egress window or skylight – Installed per IRC R310 when converting to a sleeping space
- 🪜 Staircase construction – New stairs or modification of existing stairs to meet headroom, rise/run, and tread width
- 🔌 Electrical – New circuits, outlets, lighting, switches, smoke/CO detectors — all brought up to code
- 🌬️ HVAC – Duct extensions or ductless mini-split depending on system load and attic access
- 🚿 Plumbing (if needed) – Drain, vent, and supply lines run through walls or ceiling cavities for bathrooms
- 🧱 Drywall, texture, paint – Full finish work on all walls and ceilings, trimmed and painted
- 🚪 Doors, trim, flooring – Installed per layout — LVP, carpet, engineered wood, or whatever flooring fits the use
We also handle all permitting, inspections, and any required engineer sign-offs if dormers, structural changes, or load upgrades are involved. If your attic has fire separation requirements (e.g., converting to an ADU), we include that in the scope.
Licensed, Bonded, Insured
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Cost to Finish Attic in Mill Creek
Attic Finishing
| Service | Cost Range | Average Cost | Labor Cost | Material Cost |
|---|---|---|---|---|
| Framing and Insulation | $4160 - $10400 | $7280 | $5200 | $2080 |
| Drywall Installation | $2600 - $6240 | $4420 | $3380 | $1040 |
| Flooring Installation | $3120 - $7280 | $5200 | $3640 | $1560 |
| Painting | $1248 - $3120 | $2184 | $1560 | $624 |
| Electrical Work | $2080 - $6240 | $4160 | $3120 | $1040 |
| Plumbing Work | $2080 - $8320 | $5200 | $3640 | $1560 |
| HVAC Installation | $3120 - $8320 | $5720 | $4160 | $1560 |
| Finishing (doors, trim, etc.) | $1248 - $4160 | $2704 | $2080 | $624 |
| Miscellaneous (permits, inspections, etc.) | $1040 - $2080 | $1560 | $1040 | $520 |
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 ATTIC REMODELS
This year, we’ve taken 3 attics from dusty storage to livable rooms. Check out our makeovers and see the potential in your attic!
Area:
attic
Timeline:
3 to 6 weeks
Remodel ROI Calculator 2025
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$20,000-$120,000
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$25,000-$150,000
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How we work
Every attic is different – layout, headroom, structure, and access all affect what’s possible. We don’t guess or wing it. Here’s how we handle it from start to finish:
Step 1: Walk-through & evaluation 🏠
We check ceiling height, roof pitch, structural framing, ventilation, and access. If the space doesn’t meet code, we explain what needs to change — dormers, stair modifications, or structural reinforcement.
Step 2: Scope & pricing 📋
We build a detailed scope of work — framing, insulation, electrical, HVAC, drywall, windows, plumbing if needed. You’ll get a clear estimate with line-by-line pricing.
Step 3: Permits & engineering 🧾
We pull all required permits with the City of Mill Creek and WA L&I. If the attic needs structural changes or ADU fire separation, we include engineering and fire-rated assemblies in the plan.
Step 4: Structural & framing 🪚
We reinforce floor joists, build knee walls or dormers if needed, install subfloor, and prep the space for trades.
Step 5: Trades rough-in ⚡🌬️🚿
Electricians and HVAC come in first, followed by plumbing rough-in (if applicable). Everything is installed to code — no shortcuts.
Step 6: Insulation & drywall 📦
We install R-49+ roof insulation and R-21 in exterior kneewalls. All walls are fully sealed and prepped for drywall. Taped, textured, and ready for finish.
Step 7: Finish work 🧰🎨
We install flooring, trim, doors, paint, and any custom built-ins like shelves or storage nooks.
Step 8: Final walkthrough 📝✅
We walk the job with you, take care of any punch list items, and prep for final inspection.
You’re never left wondering who’s coming or what’s next. We handle every trade and every step — no bouncing between contractors, no delays, and no mess left behind. ✅📅🧼
Attic Contractors in Mill Creek material choice
Attic projects take more than just drywall and trim. You need real structural work, insulation that performs, and systems that pass inspection without problems. We only use code-approved materials — no off-brand stuff or shortcuts.
Framing & Structure
- We frame with #2 or better Douglas Fir from Chinook Lumber, Dunn, or Parr
- Subfloors go down in ¾" T&G plywood or Advantech — glued, screwed, and tight
- Fasteners are Simpson Strong-Tie or equivalent — joist hangers, ties, and brackets that hold up
Insulation & Venting
- For sloped ceilings, we use Owens Corning R-49 batts or blown-in cellulose (when there's access)
- Ridge vents, baffles, and soffit venting are installed properly — we don’t block airflow or skip baffles
- All penetrations get sealed with Tremco or Great Stuff Pro foam
Windows & Skylights
- We install Velux skylights or egress windows from Andersen or Milgard — sized to meet IRC egress rules if a bedroom is planned
Mechanical, Electrical & Plumbing
- Electrical work is built with UL-rated gear — Square D panels, Leviton switches, Eaton breakers
- HVAC is either tied into your main system or done with a Mitsubishi ductless mini-split
- Plumbing (for a bath or laundry) is done with PEX and ABS, sloped and vented per code
Finishes
- Drywall is ½" standard unless fire-rated is required
- Flooring depends on use — carpet for bedrooms, LVP for flex spaces
- Trim comes from Metrie or WindsorONE, always installed with clean corners and returns
All materials are from local suppliers — no box-store orders. We plan ahead, order what’s needed, and get everything on site before the job starts. It’s all included in the estimate — no surprises. 🧰📦✅
FAQ
Can I legally turn my attic into a bedroom?
Will my existing floor framing support a finished attic?
What kind of insulation do I need?
Do I need a new HVAC system for the attic?
How long does a full attic remodel take?
Contact Us
- 206-255-2708sales@renova.contractors
- 221 1st ave w, #247, Seattle, WA 98119
- Monday - Sunday 9:00AM - 9:00PM
