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Bellevue & the Eastside · Basement home theater builder
Sound-insulated walls, tiered seating, wiring for your projector or screen and speakers, and dimmable lighting, built into your basement by one team, for one fixed price.
In-house crews · Licensed, bonded & insured in WA · Permits handled for you
Home theater at a glance
Typical cost
$35k – $70k
Sound
Insulated walls and ceiling
Permit
Needed for new circuits
Design
3D before you sign
Licensed
Bonded & insured in WA
In-house
Crews for the core trades
3D design
See it before we build it
Permits
Filed and managed by us
The short answer
A basement home theater or media room on the Eastside usually costs $35,000 to $70,000. That covers the room itself: sound insulation, a seating riser, wiring for your projector or screen and speakers, dedicated circuits and dimmable lighting. We check for moisture first, and new circuits need an electrical permit, which we file.
Reviewed by John, project lead · Prices from our 2026 Seattle-metro basement cost guide · Updated October 2026
More basement services
Add a wet bar, a powder room or a game area next to the theater.
Framing, insulation, drywall, flooring and lighting that turn bare concrete into living space.
$30k – $55k
4–6 week build
Basement finishing →
A full or three-quarter bath added below grade, with the drain and pumping worked out first.
$55k – $95k
With full finish
Basement bathrooms →
A bedroom, bathroom and egress window, or a fully separate basement ADU with its own entrance.
$75k – $140k
Permit required
Basement ADUs →
Compare every basement project we build, side by side, with costs.
$30k – $140k
Moisture check first
All basement services →
Code-compliant escape windows with excavation, window well and ladder, required for any basement bedroom.
$8k – $18k
Per window
Egress windows →
Interior French drains, sump pumps and vapor barriers, done before any finishes go in.
$10k – $25k
Done first
Waterproofing →
Home theaters on the Eastside
A room layout around your screen size and seating, sound-insulated walls and ceiling, a solid-core door, a seating riser, in-wall and in-ceiling wiring for speakers and video, dedicated circuits, dimmable and step lighting, and finishes like acoustic panels and carpet. One fixed price and one project lead.
Sound control works best when it's planned into the framing and insulation, not added afterwards. We design it in from the start, so the movie stays in the basement.
When the designer and the builder are the same company, the drawings are priced as they're drawn. You never pay for a design you can't afford to build, and change orders drop because the crew helped plan the job.
✓
Moisture check before design
✓
3D render of your new basement
✓
Egress windows for every bedroom
✓
Permits filed and inspections handled
✓
In-house crews, one project lead
Code and permits
Basic finish · 4–6 wk build
Full or 3/4 basement bath
In-law or guest suite
Home theater and media room
Wet bar and game room
Home gym or office
Egress windows for bedrooms
French drain and sump pump
How it works
01
First visit
We visit, measure, check ceiling height and look for signs of water before anything else.
02
Design
We lay out rooms around beams, ducts and the stairs, show it to you in 3D and lock in a fixed price.
03
Permit
We file the permit and, if needed, install the drain and sump pump before framing starts.
04
Build
Framing, rough-in, inspections, insulation, drywall, flooring and trim. A basic finish takes about 4 to 6 weeks.
05
Final
We walk the final inspection, checking egress windows, smoke detectors and lighting, then go through the punch list with you.
Typical projects
Guest suite
A guest bedroom with a code-compliant egress window, a closet and a new bathroom down the hall.
$75k – $140k
Permit required
Rec room
An open rec room with a wet bar, open shelving and space for a pool table, plus a powder room.
$55k – $95k
Finish + bath
Basic finish
Bare concrete finished with rubber flooring, a mirror wall, insulated walls and a storage room for seasonal gear.
$30k – $55k
4–6 weeks
Reviews
Real Google reviews from homeowners we've built for across Bellevue and the Eastside.
FAQ
Straight answers on cost, permits, egress and moisture. Ask us anything else at the free consult.
How much does a basement home theater cost?
Most Eastside basement theaters and media rooms cost $35,000 to $70,000. Screen size, seating and how much sound control you want move the number most.
Can you build a theater in a basement with a low ceiling?
Usually, as long as the room meets the roughly 7-foot habitable height. A riser takes some of that height, so we plan the seating rows and screen position around it.
Do I need a permit to finish my basement?
In nearly all cases, yes. Egress windows, new electrical circuits and plumbing all need permits in Bellevue and the rest of the Eastside. We file them and handle the inspections.
Does a basement bedroom need an egress window?
Yes. A basement room can't legally be used or sold as a bedroom without a code-compliant egress window. Each one costs $8,000–$18,000, including excavation and the window well.
How tall does my basement ceiling need to be?
Habitable rooms need about 7 feet of ceiling height, with limited exceptions for beams and ductwork. We measure it at the first visit.
Can you finish a damp basement?
Usually, yes, once the moisture is fixed. If groundwater is the problem, we install an interior French drain and sump pump first, which typically costs $10,000–$25,000.
Is finishing a basement worth it?
Per Remodeling magazine's Cost vs. Value data, Seattle-area basement conversions typically return 65–75% at resale. With Eastside homes at $1.2 to $2.5 million, finished square footage adds real value.
Start your home theater
Tell us about your basement. We'll visit, check moisture and ceiling height, talk through layout and budget, then send you a fixed price.
Renovision Design & Build LLC
1400 112th Ave NE, Bellevue, WA 98004
(425) 276-6501 · Mon–Fri 8–5
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