Fast, Reliable Blown-In Insulation Across Beverly Hills
Blown-in insulation in Beverly Hills typically costs $2.80-$4.50 per square foot for attic work and $4.50-$7.00 per square foot for dense-pack wall retrofits, with most jobs completed in one to two days. We’re the crew that shows up in Trousdale Estates, the Beverly Hills flats, and the hillside canyons north of Sunset with a written price already in hand, not a promise to “get back to you.” Our Blown-In Insulation team dispatches from our Los Angeles office and carries Beverly Hills Building & Safety permit packages prepped for the city’s specific inspection path, not LA City’s. Call (213) 816-1699 for a free estimate with a written scope before anyone lifts a tool.
Why Topside Attic Insulation Burbank Is Beverly Hills’s Preferred Blown-In Insulation Company
We’ve worked enough jobs in the 90210 and 90212 zip codes to know that a crew trained on LA City permits will stall out here. Beverly Hills runs its own Building & Safety department, and our paperwork is filed for BHBS from day one.
Our reviews from Beverly Hills customers - 47 five-star and 3 four-star ratings at last count - consistently mention two things: the blower-door number they walked away with, and the fact that we texted when the technician was en route. Under Haven Standard: Arrive on schedule, you get a named technician and a text when they are on the way.
Response time to Beverly Hills is same-day or next-morning for most calls, with emergency slots available for homes mid-renovation where the drywall crew is already scheduled. We know which BHBS inspectors want knob-and-tube documentation upfront and which will accept it at rough-in. That local knowledge keeps jobs moving.
Our Blown-In Insulation Services in Beverly Hills

Blown-In Cellulose
We blow GreenFiber cellulose in Beverly Hills attics at settled densities of 1.5-2.0 pounds per cubic foot, which gives you R-3.2 to R-3.8 per inch depending on cavity depth. In the flats, where 1920s Spanish Colonial Revival homes have shallow rafter bays and clay tile roofs, cellulose is often the only material that fills irregular cavities without compressing. We air-seal top plates, can lights, and plumbing penetrations first, then blow. The blower-door test comes after, not before, so you see the actual result.

Blown-In Fiberglass
Owens Corning blown fiberglass goes in when we’re topping up existing attic insulation or working in hillside homes where ignition resistance matters. In Trousdale Estates and north of Sunset, fiberglass doesn’t carry the same smolder risk as cellulose in WUI zones, and it pairs well with fire-rated batts on attic decks. We typically see R-30 to R-38 existing attics in Beverly Hills that were built to 1980s Title 24 and now need R-49 or R-60 to meet current code. A blown-in top-up with fiberglass runs $1,800-$3,200 for most 2,500-square-foot homes.

Dense-Pack Wall Insulation
This is where we spend most of our time in Beverly Hills. Dense-pack cellulose or fiberglass is blown into closed wall cavities at 3.0-3.5 pounds per cubic foot, dense enough to slow air movement through the stud bay without settling. On a Trousdale Estates job, our crew was called to dense-pack the glass-heavy rear wall of a 1960s contemporary where the builder had left the stud cavities empty. We pulled the interior drywall in two rooms, dense-packed GreenFiber cellulose to hit Title 24, and topped the attic with Owens Corning blown fiberglass. The afternoon canyon heat gain in that west-facing room dropped enough that the homeowner stopped using the space as a storage closet.
Pre-1950 flats estates with lath-and-plaster are a different job entirely. We drill access holes through the stucco or plaster, dense-pack, then patch and texture-match. But BHBS won’t sign off on blown-in until knob-and-tube wiring is decommissioned or documented, so we coordinate with your electrician before we blow a single cavity.

Blown-In Top-Up
Most Beverly Hills homes built between 1978 and 2005 have some attic insulation, just not enough. We measure what’s there, calculate the gap to current Title 24, and blow in exactly what’s needed. A typical top-up in the flats runs $1,500-$2,800. You get before-and-after blower-door numbers if air sealing is part of the scope, and a Documented Photo Record either way.

What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Before
AfterTrusted Brands We Service in Beverly Hills
We stock Owens Corning, Johns Manville, and Knauf materials for Beverly Hills jobs, with GreenFiber cellulose on hand for dense-pack work. No proprietary lock-in means we spec what the house needs, not what our supplier pushed this quarter. For hillside WUI zones, we source fire-rated batts and ignition-resistant assemblies from the same manufacturers, so the material package meets BHBS and California Fire Marshal requirements without special-order delays.
Common Blown-In Insulation Problems We See in Beverly Hills Homes

- Builder-grade or missing cavity walls in Trousdale Estates. Those mid-century contemporaries read as “updated” on the listing sheet, but pull an outlet cover and you’ll find empty stud bays. R-values near zero. Afternoon canyon heat gain turns glass-heavy rooms into greenhouses.
- Pre-1950 flats estates with live knob-and-tube wiring. An uninformed crew blows cellulose over live K&T, BHBS fails the inspection, and you’re paying to vacuum it all out plus re-do the electrical documentation. We check the wiring status before we load the blower.
- Marine-layer moisture in uninsulated stucco cavities. The morning fog in the flats accumulates in wall cavities with no vapor management. Blow cellulose or fiberglass over damp framing and you’ve hidden the rot until it shows through the plaster. We moisture-test before we fill.
- Hillside homes north of Sunset without WUI-compliant attic assemblies. Santa Ana winds and WUI designation mean standard cellulose on an open attic deck won’t pass final. We spec ignition-resistant or non-combustible materials from the start.
Pricing for Blown-In Insulation in Beverly Hills, CA
| Service | Typical Range in Beverly Hills |
|---|---|
| Attic blown-in cellulose or fiberglass (new installation, R-49) | $2.80-$4.50/sq ft |
| Attic blown-in top-up (R-30 to R-49 or R-60) | $1,500-$2,800 total |
| Dense-pack wall insulation (open cavity, lath-and-plaster or drywall) | $4.50-$7.00/sq ft of wall area |
| Dense-pack with interior drywall removal and replacement | $7.50-$12.00/sq ft |
| Air sealing + blower-door verification (add to any insulation job) | $800-$1,600 |
What moves the number: cavity depth, whether we remove drywall, the condition of existing wiring, and whether BHBS requires WUI-rated materials. We give you a Written Price Before Any Work Starts, always, with a flat number and a written scope. Free Second Opinion on any written estimate from another contractor. Call (213) 816-1699 for your exact quote.
We Also Serve Cities Near Beverly Hills

Our crews work Beverly Hills regularly and also handle blown-in insulation in West Hollywood, Culver City, Santa Monica, and Glendale. Each city has its own permit path and inspection quirks; we file for the correct jurisdiction on every job.
Serving Beverly Hills, CA - Our Local Coverage Area
We’re based in the Beverly Hills area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs - Blown-In Insulation in Beverly Hills

Beverly Hills operates its own Building & Safety department entirely separate from LA City, so permits, inspections, and code interpretations run through BHBS rather than LADBS. BHBS inspectors routinely require documentation of knob-and-tube wiring status in pre-1950 homes before signing off on blown-in insulation, a step LA City doesn’t enforce with the same consistency. If your contractor files LA City paperwork or misses the electrical documentation, your job stalls. We file BHBS permits from day one and coordinate with electricians upfront. Call (213) 816-1699 and we’ll walk you through the specific permit path for your property.
Most do not. Mid-century modern and contemporary homes in Trousdale Estates were built with minimal thermal envelopes, and many stud cavities were left empty. R-values near zero are common. Dense-pack wall insulation is typically required to meet current Title 24 standards, and the glass-heavy design makes the upgrade measurable in comfort, not just compliance. We dense-pack to 3.0-3.5 pounds per cubic foot and provide blower-door numbers to verify the air-sealing result. Call (213) 816-1699 for a free estimate with written scope.
No, and BHBS will fail the inspection if you try. Pre-1950 homes in the Beverly Hills flats with original knob-and-tube wiring need the wiring decommissioned or explicitly documented as inactive before BHBS signs off on blown-in insulation. We verify electrical status before loading the blower and coordinate with licensed electricians when needed. Skipping this step has stalled $30,000 insulation retrofits on $12 million estates. Call (213) 816-1699 and we’ll check your wiring status as part of the free estimate.
Yes. The marine layer that settles most mornings in the Beverly Hills flats contributes to moisture accumulation in uninsulated wall cavities of older stucco homes, accelerating wood rot. We moisture-test framing and sheathing before blowing any material. If we find damp conditions, we address vapor management first - either through exterior drainage improvements, interior vapor retarders, or targeted drying - rather than hiding the problem behind new insulation. Call (213) 816-1699 for an assessment that includes moisture readings.
Yes. Properties in designated Wildland-Urban Interface zones north of Sunset must meet ignition-resistant or non-combustible insulation assembly requirements. Standard cellulose on an open attic deck won’t pass final inspection in these areas. We spec fire-rated batts, ignition-resistant blown fiberglass, or approved spray foam assemblies from Owens Corning and Johns Manville, and we file the WUI compliance documentation with BHBS as part of the permit package. Call (213) 816-1699 for a free estimate that includes the correct material specification for your zone.
Ready to see what your home is actually losing? We provide blown-in insulation in Beverly Hills with a written price before any work starts, before-and-after blower-door numbers on applicable jobs, and a Documented Photo Record on every visit. Our 365-Day Done Right Promise applies to all completed work, and a live person answers calls 24/7. Call (213) 816-1699 for your free estimate today.
Written by Wes Okafor, Owner at Envelope Insulation Co., serving Beverly Hills under The Haven Standard since 2016.