How much does it cost to soundproof a room in Boulder?
By The BTR Editorial Team · Last verified · Methodology
Soundproofing a room in Boulder costs $2,500–$20,000
for one 12×12 room, labor and materials included. Most Boulder owners pay about $7,000; a full garage studio build runs $10,500–$69,000.
Want an exact quote for your room?
A local contractor texts you a real number — usually within a day.
Your number goes to one or two local contractors — never five, never a call center, never resold.
You're in.
A local contractor will text you about your project. No spam, no middleman.
Soundproofing costs in Boulder are up around 3.3% over the past year, re-verified against 11+ sources in October 2026. The typical Boulder price is $7,000 per room, 12% below the US typical of $8,000 per room.
Year on yearBudget $2,500–$20,000 to soundproof a 12×12 room in Boulder, with $7,000 typical. Labor runs about $45–$110/hr and materials cost about the same everywhere, so the bigger the job, the more local labor rates matter. A garage studio build is $10,500–$69,000.
Boulder is a smaller market. Materials cost about the same as anywhere, so local labor sets most of the price, and a prefab booth — priced by the maker, not the market — costs about the same here as in a big city.
Prices on this page are for labor and materials. The base job is one bedroom-size room: walls that are decoupled or doubled up with damping compound, gaps and outlets sealed, and a solid-core door with seals. Acoustic treatment, ceiling and floor work, ventilation and permits are priced separately.
Comparing cities, or after the US-wide picture? See the national guide: Soundproofing cost in the USA.
$2,500–$20,000 to soundproof one bedroom-size room (about 12×12 ft) in Boulder — typically $7,000 for labor and materials. A prefab vocal booth is $4,850–$17,500 installed; a garage studio build is $10,500–$69,000. Verified October 2026. Get free Boulder quotes →
- One 12×12 room, walls and door, labor and materials: $2,500–$20,000 ($7,000 typical)
- Per sq ft: double drywall + damping compound $5–$16, decoupled wall $10–$40
- Vocal booth: prefab $4,850–$17,500 installed, built 4×6 $4,500–$17,500
- Garage studio $10,500–$69,000; basement studio $8,850–$65,000
- Highest in Downtown Boulder & Pearl Street (+10–25% for parking, access, permits); standard elsewhere
Prices verified October 2026 · Cross-referenced against 11+ American pricing sources · See methodology
Labor and materials unless the row says otherwise; per-sq-ft rows are per square foot of wall, floor or ceiling. STC (Sound Transmission Class) rates how much sound a wall blocks — higher is quieter. Boulder metro, re-verified October 2026.
| Service | Low | Typical | High |
|---|---|---|---|
| Acoustic treatment only (panels, bass traps)per room | $470per room | $1,450 | $3,700 |
| Solid-core door + sealsper door | $550per door | $1,150 | $2,700 |
| Window plug or inline windowper window | $230per window | $660 | $1,600 |
| Decoupled wallper sq ft | $10per sq ft | $18 | $40 |
| Double drywall + damping compound (Green Glue) wallper sq ft | $5per sq ft | $10 | $16 |
| Floating floorper sq ft | $8per sq ft | $18 | $30 |
| Ceiling isolationper sq ft | $7per sq ft | $16 | $30 |
| One room, full soundproofing (about 12×12 ft)per room | $2,500per room | $7,000 | $20,000 |
| Prefab vocal booth (installed)per booth | $4,850per booth | $8,300 | $17,500 |
| Built vocal booth (4×6 ft)per booth | $4,500per booth | $9,250 | $17,500 |
| Garage to studio conversionper project | $10,500per project | $32,000 | $69,000 |
| Basement studio buildper project | $8,850per project | $27,500 | $65,000 |
| HVAC silencer / quiet ventilationper room | $720per room | $2,300 | $6,150 |
| Electrical (isolated circuit, outlets)per room | $260per room | $810 | $2,100 |
| Acoustic consultant / designper project | $470per project | $1,900 | $5,500 |
| Permitsper project | $95per project | $380 | $1,900 |
| STC test after completionper test | $370per test | $950 | $2,300 |
What are you soundproofing?
One tap — we'll show you the going rate, then take your number.
Want an exact quote for your room?
A local contractor texts you a real number — usually within a day.
You're in.
A local contractor will be in touch about your project. No spam, no middleman.
Prices verified October 2026 · Cross-referenced against 11+ American pricing sources · See methodology
Figures are for the Boulder metro area. Quotes in Downtown Boulder & Pearl Street run 10–25% higher for parking, access and permits.
Soundproofing prices across Boulder
Where you live in Boulder changes the labor line, not the materials. These are typical contractor rates and 12×12 room prices by area — highest in Downtown Boulder & Pearl Street, standard everywhere else.
Downtown Boulder & Pearl Street
- Hourly
- $50–$140/hr
- Job
- $2,750–$25,000 / 12×12 room
Parking, deliveries and site access add time to every work day here, and permits can take longer. Expect quotes 10–25% above the rest of the city.
North & East Boulder
- Hourly
- $45–$110/hr
- Job
- $2,500–$20,000 / 12×12 room
Standard rates. Garages, spare rooms and shared walls are all common jobs; the isolation target sets the price more than the neighborhood.
CU Boulder & University Hill
- Hourly
- $45–$110/hr
- Job
- $2,500–$20,000 / 12×12 room
Standard pricing. If you rent, get the landlord's OK in writing before any wall work, or start with removable fixes.
Longmont, Louisville & Lafayette
- Hourly
- $45–$110/hr
- Job
- $2,500–$20,000 / 12×12 room
Standard labor rates. Ask whether a contractor based across the metro charges for travel before you compare quotes.
Real-World Soundproofing Costs in Boulder
Here's what common soundproofing jobs cost in Boulder in 2026, one bedroom-size room, labor and materials.
Apartment bedroom — neighbor noise
A solid-core door with seals ($1,150 typical), a window plug or inline window ($660) and one shared wall doubled up with damping compound (about 96 sq ft at $10 per sq ft). Typical total in Boulder: $2,750. Renters: get the landlord's OK in writing first; a window plug comes out when you move.
Spare-room vocal booth build
A 4×6 booth framed inside a spare room with its own decoupled walls and ceiling, a solid-core door, quiet ventilation and a light. Boulder contractors quote $4,500–$17,500; a prefab booth is $4,850–$17,500 installed and moves with you.
Garage to project studio
Closing in the garage door opening, insulating, decoupled walls and ceiling, a sealed entry door, a dedicated circuit and quiet cooling. Expect $10,500–$69,000 in Boulder for a two-car garage; a conversion like this usually needs a permit ($95–$1,900).
Basement drum room
Drums need the full job: a decoupled ceiling ($7–$30 per sq ft) so the house above stays quiet, decoupled walls, a sealed door and ventilation. A basement studio build in Boulder runs $8,850–$65,000, and the ceiling is usually the biggest line. No basement? The same room in a garage or on a ground floor needs a floating floor ($8–$30 per sq ft) instead.
Podcast office
Speech is easier to contain than music. A solid-core door with seals, a window plug and acoustic treatment for a clean sound come to about $3,250 in Boulder. Add quiet ventilation ($720–$6,150) if the room gets stuffy with the door shut.
Get a fair soundproofing quote in Boulder
Local contractors · Free quotes · No obligation, no spam.
How much does it cost to soundproof a room in Boulder?
For one 12×12 room, budget $2,500–$20,000 in Boulder. The walls and a door are the base job; a ceiling ($7–$30 per sq ft) or floating floor ($8–$30 per sq ft) is what pushes a quote toward the top.
The extras add up: quiet ventilation is $720–$6,150, a dedicated circuit and outlets $260–$2,100, and acoustic treatment once the room is sealed $470–$3,700. Re-verified against 11+ sources in October 2026.
Soundproofing fees and contract terms in Boulder (2026)
The headline price is one room: $2,500–$20,000. These are the lines that move the final bill — design, permits, changes mid-job, and the work around the walls.
| Line on the quote | Low | Typical | High |
|---|---|---|---|
| Design / acoustic consultant fee | $470 | $1,900 | $5,500 |
| Deposit at signing | 10% | 25–33% | 50% |
| Permit | $95 | $380 | $1,900 |
| Change orders | Priced in writing first | 5–10% of the job | 15%+ of the job |
| Demolition and disposal | $130 | $360 | $840 |
| Painting and finishing | $260 | $630 | $1,250 |
| HVAC silencer / quiet ventilation | $720 | $2,300 | $6,150 |
| STC test after completion | $370 | $950 | $2,300 |
Ask every Boulder contractor for the wall design in writing — clips or new studs, layers, insulation, sealant — plus the door and vents. Two quotes of $7,000 can be for very different rooms.
What moves a soundproofing quote in Boulder:
- How quiet it has to be — talking and TV is a $2,500–$7,000 job; drums and bass push toward $20,000.
- Which surfaces — walls run $5–$40 per sq ft depending on the method; a ceiling adds $7–$30 and a floating floor $8–$30 per sq ft.
- The weak points — a solid-core door with seals is $550–$2,700, a window plug or inline window $230–$1,600.
- Air and power — quiet ventilation is $720–$6,150; a dedicated circuit and outlets $260–$2,100.
- Permits and changes — permits run $95–$1,900; changes mid-job are priced as change orders.
Get the same five things from every Boulder contractor: the wall design, what's sealed, ventilation, permits and the payment schedule. Compare those, not the headline price. Get a quote for your project →
Soundproofing Cost in Boulder by Room Size, Isolation Target and Room Type
Vocal booth: $4,850–$17,500 prefab, $4,500–$17,500 built. One 12×12 room: $2,500–$20,000. Basement drum room: $8,850–$65,000. Garage studio: $10,500–$69,000.
Isolation target first. Most ordinary walls in homes rate STC 30 to 45. STC 45 takes care of normal talking and TV next door — seal the gaps, upgrade the door, add a damped drywall layer — near the low end ($2,500 in Boulder). STC 55 is the usual home-studio target for singing and amps: double drywall with damping compound or walls on isolation clips, around $7,000. STC 65 is where drums and bass stop bothering the neighbors; it takes a room within a room and runs toward $20,000. STC doesn't measure the deepest bass, so drum rooms also need the floor or ceiling done.
Then size: cost follows wall and ceiling area. With 8-foot ceilings a 10×10 room has about 320 sq ft of wall, a 12×12 about 384 and a 15×20 about 560. At $10 per sq ft for double drywall with damping compound, plus a solid-core door, that's about $4,350, $5,000 and $6,750; on decoupled walls at $18 per sq ft, about $6,900, $8,050 and $11,000. Most 12×12 jobs mix the two and land near $7,000.
Boulder Soundproofing Costs by Project Type
| Project Type | Cost | Best for |
|---|---|---|
| Handyman job (door, seals, panels) | $550–$3,150 per room | Door seals, a solid-core door, window plugs and hanging acoustic panels |
| General contractor build | $2,750–$8,050 per room | An extra drywall layer with damping compound on the noisy walls, plus the door |
| Soundproofing specialist | $6,300–$15,000 per room | Decoupled walls and ceilings that have to reach a real isolation target |
| Studio design-build firm | $10,500–$28,000+ per room | Full studios: room within a room, quiet ventilation, wiring and treatment in one contract |
| Prefab booth (vendor) | $4,850–$17,500 installed | One person and a mic — vocals, voice-over, podcasts — and renters who may move |
| Acoustic consultant design | $470–$5,500 per project | Designing the build and testing the result; no construction |
| DIY materials only | $630–$2,800 in materials | Handy owners doing door seals, an extra drywall layer and treatment themselves |
| Commercial acoustic job | $14,000+ per room | Rehearsal rooms, offices and commercial spaces with code and landlord requirements |
Soundproofing, acoustic treatment or a prefab booth in Boulder?
Soundproofing one room in Boulder costs $2,500–$20,000, and it's the only one of the three that keeps sound in or out. It works with mass (heavier walls), decoupling (breaking the solid path between the two sides of a wall) and sealing every gap, because sound leaks through any opening air can pass. Acoustic treatment — panels and bass traps, $470–$3,700 a room — does none of that: it controls echo inside the room so recordings sound cleaner.
A prefab booth ($4,850–$17,500 installed) is a sealed box with its own walls, floor and door, so it isolates a small space without touching the house. It suits renters and it moves with you, but it fits one person and a mic. For a whole room you can play and mix in, soundproofing is the job; for a room that sounds echoey but doesn't bother anyone, treatment alone may be enough.
What's included in a Boulder room soundproofing job (and what costs extra)
A full room job covers the walls — decoupled, or doubled up with damping compound — sealing every gap and outlet, a solid-core door with perimeter seals, and finishing ready for paint. Usually extra:
- Ceiling isolation — $7–$30 per sq ft, needed when the noise goes up or down
- Floating floor — $8–$30 per sq ft, mostly for drums and bass
- Quiet ventilation — $720–$6,150 for silencers or a quiet cooling unit
- Acoustic treatment — $470–$3,700 for panels and bass traps once the room is sealed
Ask for the wall design in writing — layers, clips or studs, insulation and sealant — so you can compare quotes like for like.
Speech, singing or drums?
Stopping a TV next door is a $2,500–$7,000 job in Boulder: seal the gaps, upgrade the door, add a damped drywall layer. Stopping drums takes a room within a room — decoupled walls, ceiling and floor — and runs toward $20,000.
Room size and surfaces
Cost follows surface area, not floor area. Walls run $10 per sq ft typical for double drywall with damping compound and $18 for a decoupled wall; add the ceiling ($7–$30 per sq ft) or a floating floor ($8–$30 per sq ft) and the bill climbs fast.
The weak points
A wall is only as good as its door, window and vents. A solid-core door with seals is $550–$2,700, a window plug or inline window $230–$1,600, and a ventilation silencer $720–$6,150. Skip them and new walls barely help.
Who does the work
A handyman can seal a door and hang panels; a general contractor can add drywall layers; a soundproofing specialist or design-build firm knows how to decouple and seal so the room actually reaches its target. Quotes rise in that order.
What's behind the walls
A sealed room needs fresh air and power: quiet ventilation is $720–$6,150 and a dedicated circuit $260–$2,100. Work that moves walls, adds wiring or changes ductwork usually needs a permit ($95–$1,900 in Boulder).
Location — Downtown Boulder & Pearl Street
Labor is most of the bill. Quotes in Downtown Boulder & Pearl Street run 10–25% higher for parking, access and permits; the rest of Boulder prices at the city standard.
Renting or owning
Renters need the landlord's OK in writing before any wall work. Removable fixes — a window plug, door seals, acoustic panels, a prefab booth — are the usual renter route; owners can build the isolation into the house.
- Fix the weak points first.Door seals, a solid-core door ($550–$2,700) and a window plug ($230–$1,600) often solve a neighbor problem before any wall work.
- Only do the walls that matter.One shared wall at about $10 per sq ft costs a fraction of a whole room. Ask which walls actually carry the noise.
- Pick the right target.Speech and singing don't need a drum room. Tell contractors what you'll be doing in the room and build for that, not the maximum.
- Do the finishing yourself.Painting and finishing run $260–$1,250; many contractors will leave the room primed for you to paint.
- Get the design right once.An acoustic consultant at $470–$5,500 costs less than tearing out a wall that didn't work.
- Consider a prefab booth.For one person and a mic, a prefab booth at $4,850–$17,500 installed skips the construction, the permit and the mess — and it moves with you.
Boulder contractors often quote after a site visit. Before you sign, get these in writing:
- The wall design — clips, channel or new studs, layers, insulation and sealant
- Which walls, the ceiling and the floor are included
- The door, seals and any window work
- Ventilation and electrical — included or separate
- Permits, and who pulls them
- The STC target, and whether a test is included
- Deposit, payment schedule and how change orders are priced
- Start date, how long it takes and cleanup
How much does it cost to soundproof a room in Boulder?
$2,500–$20,000 for one bedroom-size room (about 12×12 ft), labor and materials, and $7,000 is typical. That covers the walls and a sealed solid-core door; ceiling and floor work, ventilation and acoustic treatment are extra.
How much does soundproofing cost per square foot in Boulder?
$5–$16 per sq ft for an extra drywall layer with damping compound, and $10–$40 for a decoupled wall. Ceilings run $7–$30 and floating floors $8–$30 per sq ft.
How much does a vocal booth cost in Boulder?
$4,850–$17,500 for a prefab booth, installed, or $4,500–$17,500 for a 4×6 booth built into a room. Prefab booths move with you; built booths can be sized to the room.
How much does a garage studio conversion cost in Boulder?
$10,500–$69,000 to turn a two-car garage into a project studio — closing in the door opening, decoupled walls and ceiling, a sealed door, wiring and quiet cooling. Permits add $95–$1,900.
What's the difference between soundproofing and acoustic treatment?
Soundproofing keeps sound in or out using mass, decoupling and airtight seals — $2,500–$20,000 a room in Boulder. Acoustic treatment (panels and bass traps, $470–$3,700) only tames echo inside the room. Foam alone won't stop a neighbor hearing you.
What STC rating do I need for a home studio?
About STC 55 for singing and amplified music, and STC 60–65 or more — usually a room within a room — for drums. STC 45 handles talking and TV. In Boulder that runs from about $2,500 for the lighter jobs to $20,000 for a full room within a room.
Can I soundproof a rented apartment in Boulder?
Yes, with the landlord's OK in writing for anything that touches the walls. Removable fixes are the usual route: a window plug or inline window ($230–$1,600), door seals, acoustic panels, and a prefab booth ($4,850–$17,500) that leaves with you.
Do I need a permit to soundproof a room in Boulder?
Rules vary, but cosmetic work like door seals and panels rarely needs one; work that moves walls, adds wiring or ductwork, or converts a garage usually does. Permits run about $95–$1,900 — ask your contractor who pulls it.
How much does a basement studio or drum room cost in Boulder?
$8,850–$65,000 for a basement studio build. For drums the ceiling matters most — a decoupled ceiling runs $7–$30 per sq ft — because the rest of the house is directly above.
Is a prefab booth cheaper than soundproofing a room?
Not always. A prefab booth is $4,850–$17,500 installed ($8,300 typical) against $2,500–$20,000 ($7,000 typical) for a full room in Boulder. The booth gives one person a quiet spot for a mic and moves with you; the room gives you space to play and mix.
Prices verified October 2026 · Cross-referenced against 11+ American pricing sources · See methodology
Prices for the Boulder metro area, October 2026. Outer suburbs may vary.