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Attic Finishing and Remodel in Mercer Island – Add Bedrooms, Offices, and More 🏠

A cozy living room with a vaulted ceiling and skylights, reminiscent of an attic remodeling. The room features a sofa, a red armchair, a fireplace below a wall-mounted TV, and a coffee table with books. The back corner has a small kitchen area. Warm lighting and modern decor create an inviting atmosphere.
An attic bedroom with a slanted ceiling, featuring two twin beds with light pink bedding positioned against opposite walls. The beautifully remodeled space includes a small round window between the beds, two wooden stools under the window, and a wicker basket on the hardwood floor.
A cozy attic bedroom with sloped ceilings and two skylights, the result of careful attic finishing. The room features a single bed with white and beige bedding, a wooden desk with a yellow lamp, a wardrobe with frosted glass doors, and green and white striped walls. A plant sits on the wooden floor.
A dimly lit room under construction with gray walls, partially installed cabinets, and an unfinished floor. Evidence of attic remodeling is clear with a door, some drywall sheets, and a work light on a stand visible.
A small, empty attic room with slanted ceilings, light green walls, and wooden floors awaits your attic remodeling touch. A single window lets in natural light, while a long wooden shelf lines the right wall. An electrical outlet and baseboard heater are visible beneath the shelf.
A cozy attic room with sloped wooden-paneled walls and ceiling, recessed lighting, and carpeted floor. Two alcove windows allow natural light to stream in. A white door at the far end leads to another space. The attic remodeling showcases clean, minimalistic design.
A cozy interior of a modern loft featuring a small round wooden dining table with black chairs, a white pendant light above, and a wooden staircase leading to an elegantly finished attic area. In the foreground, there's a tan leather sofa against white paneled walls bathed in natural light.
A cozy nook under a slanted ceiling, perfect for an attic remodeling project, features a window with a view of houses. The space includes a star-patterned bean bag chair, a geometric-patterned cushion, and a wicker basket containing books, all placed on a soft carpeted floor.

There’s an entire space up there—your unused attic—that’s just waiting to become something more. If you’re looking for an attic remodel Mercer Island homeowners actually recommend, you’ve found it. RENOVA Contractors LLC turns neglected attics into cozy bedrooms, bright home offices, or peaceful retreats. We come over, take real measurements, check whether we need dormers or egress, and sketch a plan that meets Mercer Island’s building codes. No fluff. Just honest design, proper permits, and a single local team that sees your vision all the way through.

Attic Finishing Services in Mercer Island by RENOVA

All Services
Kitchen
Bathroom
Cabinets
Countertops
Roofing
Siding
Tile
Flooring
Masonry
Basement
Attic
Decking
Attic Finishing remodel project by RENOVA Contractors

Attic Finishing

Transform your attic into usable living space with our finishing services.

Price starts at $10,000

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Attic Ladder remodel project by RENOVA Contractors

Attic Ladder

Gain easy access to your attic with a professionally installed attic ladder.

Price starts at $1,500

Attic Insulation remodel project by RENOVA Contractors

Attic Insulation

Ensure energy efficiency and comfort in your home with proper attic insulation.

Price starts at $3,500

Attic Drywall remodel project by RENOVA Contractors

Attic Drywall

Finish your attic walls with durable and attractive drywall.

Price starts at $4,000

Attic Windows and Skylights remodel project by RENOVA Contractors

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 remodel project by RENOVA Contractors

Attic Storage Solutions

Maximize your attic space with customized storage solutions.

Price starts at $3,000

Attic Ventilation remodel project by RENOVA Contractors

Attic Ventilation

Ensure proper airflow and ventilation in your attic for improved comfort and energy efficiency.

Price starts at $2,500

Attic Lighting remodel project by RENOVA Contractors

Attic Lighting

Illuminate your attic space with effective and energy-efficient lighting solutions.

Price starts at $1,800

Attic Heating and Cooling remodel project by RENOVA Contractors

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 remodel project by RENOVA Contractors

Attic Bathroom Addition

Add convenience and value to your home with a professionally installed attic bathroom.

Price starts at $7,000

An attic conversion Mercer Island is more than drywall and paint. Here’s what RENOVA brings to your project:

  • Full attic finishing – Walls, flooring, lighting, and HVAC integrated into real living space.
  • Vaulted ceilings & dormer install – Gain volume, shed light, open the vibes.
  • Insulation & ventilation upgrades – R-38, ridge vents or soffits — your thermostat will thank you.
  • Egress compliance – Code-approved windows or stairs, so you pass fire safety checks with ease.
  • Structural reinforcement – Spread loads properly, reinforce joists — your attic becomes structurally sound as well as useful.
  • Electrical & climate systems – Outlets, lighting, duct tie-ins — everything installed to code.
  • Built-in storage & trim finish – Perfect-fit shelves for tight spaces, flush doors, and finishes you’ll use (and love).
  • Permit submission & inspection – We prep the documents, submit them to the City, and do the follow-through.

Our approach aligns with what Mercer Island Remodeling emphasizes — seamless, stress-free, and built-to-last renovations backed by local code expertise.

Licensed, Bonded, Insured

Construction License
Business License
Insurance Certificate
Bond Certificate

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Cost to Finish Attic in Mercer Island

Attic Finishing

Detailed remodeling cost breakdown for Attic Finishing in Mercer Island
ServiceCost RangeAverage CostLabor CostMaterial Cost
Framing and Insulation$5,200 - $13,000$9,100$6,500$2,600
Drywall Installation$3,250 - $7,800$5,525$4,225$1,300
Flooring Installation$3,900 - $9,100$6,500$4,550$1,950
Painting$1,560 - $3,900$2,730$1,950$780
Electrical Work$2,600 - $7,800$5,200$3,900$1,300
Plumbing Work$2,600 - $10,400$6,500$4,550$1,950
HVAC Installation$3,900 - $10,400$7,150$5,200$1,950
Finishing (doors, trim, etc.)$1,560 - $5,200$3,380$2,600$780
Miscellaneous (permits, inspections, etc.)$1,300 - $2,600$1,950$1,300$650

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!

Recent Basement Remodelsicon

Area:

basement

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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!

Recent Attic Remodelsicon

Area:

attic

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Timeline:

3 to 6 weeks

Remodel ROI Calculator 2025

attic

$20,000 - $120,000

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kitchen

$25,000 - $150,000

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How we work

Initial Consultation

  • Understanding your vision.
  • Discussing your requirements.
  • Providing a project overview.

Site Analysis and Assessment

  • Conducting a thorough site survey.
  • Evaluating the site conditions.
  • Planning the masonry strategy.

Design and Planning

  • Creating a detailed masonry design.
  • Selecting materials.
  • Ensuring feasibility and compliance.

Cost Estimation and Budgeting

  • Providing detailed cost estimates.
  • Budgeting for the project.
  • Ensuring transparency in pricing.

Permits and Approvals

  • Securing necessary permits.
  • Obtaining required approvals.
  • Ensuring legal compliance.

Site Preparation

  • Clearing and cleaning the site.
  • Marking the layout.
  • Preparing for construction.

Masonry Installation

  • Building masonry structures.
  • Ensuring structural integrity.
  • Applying finishes.

Detail Work

  • Focusing on intricate details.
  • Performing touch-ups.
  • Ensuring a polished finish.

Cleanup and Debris Removal

  • Cleaning the site thoroughly.
  • Removing all debris.
  • Leaving your space spotless.

Final Inspection and Handover

  • Conducting a thorough inspection.
  • Ensuring quality standards are met.
  • Handing over the completed project.

Here’s how we turn dusty rafters into comfortable, official living space — without fuss:

  • On-site check & planning – Measure, inspect clearance, frames, and ventilation.
  • Transparent quote – Choices like loft office, guest bedroom, or bonus suite with line-item figures.
  • Permit handling – We prep, submit, and manage plan review and inspections with the City of Mercer Island.
  • Prep & framing – Reinforce floors, build dormers, or clear sloped spaces as needed.
  • Systems install – Rough-in for wiring, heating, and lighting — all code-aligned.
  • Insulate & drywall – Close gaps, hang panels, and prep for finishing.
  • Finish phase – New flooring, trim, doors, paint, lighting, and built-ins.
  • Walk-through & final touches – We do the walkthrough, address the punch-list, tidy up, and hand it over.

One consistent team, one clean timeline, no surprises. Your attic remodel fits your expectations and future vision.

Attic Contractors in Mercer Island materials

  • Countertops
  • Windows
  • Tile
  • Flooring
  • Kitchen Cabinets
  • Doors
  • Decking

We build attics that perform — and age gracefully, just like Mercer Island homes should:

  • Insulation – R-38 batts or closed-cell foam for energy efficiency and comfort.
  • Drywall & paint – Moisture-rated drywall, crisp paint, and clean lines.
  • Flooring – Engineered hardwood or quiet LVP — practical underfoot, long-lasting.
  • Dormer windows/skylights – Mercer Island–approved units for egress, light, and airflow.
  • Trim & finishes – Pre-finished baseboards, smart sliding or pocket doors, built-in storage in sloped areas.
  • Lighting & HVAC – Code-compliant fixtures, discreet ducting, and efficient heating solutions.

Local Suppliers:

  • Dunn Lumber – Trim and millwork essentials.
  • CFM – Flooring and accessory materials.
  • BMC – High-performance insulation products.

We choose dependable materials that meet code, survive changing weather, and still look great after years of use.

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