How Much Does Blown-In Insulation Cost in Hollywood?
Blown-in insulation in Hollywood typically runs $1,400 to $3,800 for a full attic, which works out to roughly $1.75 to $3.50 per square foot installed. A smaller top-off that adds a few inches of depth often lands between $900 and $1,600. The final number depends on square footage, the R-value you’re reaching for, and what our crew finds once we’re up in the attic.
Hollywood homes rarely fit the clean textbook case. A 1920s Spanish bungalow off Franklin Avenue and a 1960s stucco ranch in the hills have almost nothing in common when it comes to attic depth, existing material, or the amount of air leakage hiding behind the drywall. That’s why we quote after a walkthrough, not over the phone. As a dedicated insulation specialist, we install Blown In Insulation services, attic insulation, and spray foam – and only those three. Eight manufacturer brands in the lineup means the recommendation follows your house, not whatever’s on the truck.
Key Takeaways
- Full attic blown-in: $1,400 – $3,800 for most Hollywood homes.
- Per-square-foot range: $1.75 – $3.50 installed, material and depth dependent.
- Cellulose (GreenFiber) usually costs less than fiberglass at the same R-value.
- Attics with active air leaks often need air sealing first – it’s cheaper than re-doing insulation later.
- Free estimates: call (866) 605-6949.
Blown-In Insulation Cost Breakdown (2026)
These are 2026 Hollywood-market ranges for a typical single-family attic. Your actual quote depends on the specifics below.
| Line item | Typical range | Notes |
|---|---|---|
| Blown-in fiberglass (Owens Corning, Johns Manville, Knauf) | $1.75 – $2.75 / sq ft | Entry price point; good for low-dust applications |
| Blown-in cellulose (GreenFiber) | $2.00 – $3.00 / sq ft | Recycled content, better dense-pack performance |
| Blown-in mineral wool (Rockwool) | $2.75 – $3.50 / sq ft | Fire resistance, sound control |
| Attic air sealing (prerequisite) | $400 – $1,200 | Stops the leaks that defeat new insulation |
| Old insulation removal (if needed) | $350 – $900 | Usually only when material is contaminated or water-damaged |
| Baffles / attic venting | $150 – $400 | Protects soffit airflow |
| Full attic package (1,200 – 1,800 sq ft) | $1,400 – $3,800 | Most common Hollywood project |
What pushes a job toward the top of the range: deeper R-value targets, more square footage, an attic that needs air sealing before we blow anything in, and material choice – Rockwool sits above fiberglass and cellulose. What keeps it down: a clean attic with existing depth and no leaks, and choosing cellulose over premium mineral wool when the R-value target doesn’t require the upgrade.
What Affects Blown-In Insulation Pricing in Hollywood
- Attic depth and access. Hillside homes in Beachwood Canyon and the Hollywood Hills often have low-pitch or difficult attic access. A tight crawl that takes longer to work safely adds labor, not material.
- Target R-value. California’s Title 24 energy code sets minimum attic R-values that vary by climate zone. Hollywood falls in a zone that generally calls for R-38 to R-49 in attics, so the depth of blown-in material needed depends on where you already are. Temperature swings across the basin push those targets in one direction or the other per job.
- Existing insulation condition. If the old material is compressed, contaminated, or water-stained, removal adds cost but saves you from burying a problem. We diagnose this on the walkthrough rather than guessing.
- Air sealing scope. Blown-in material alone won’t fix a leaky envelope. Sealing top plates, penetrations, and recessed light housings before blowing in is the difference between a real improvement and a marginal one. This is the single factor that most often changes final cost.
- Material choice. GreenFiber cellulose, Owens Corning or Johns Manville fiberglass, and Rockwool mineral wool each sit at a different price point. The right one depends on R-value, fire resistance, sound goals, and whether you want recycled content in the mix.
- Combined method projects. Some homes need blown-in in the attic and Icynene or Demilec spray foam at the rim joist or roofline where blown-in can’t reach. That scope shift is quoted transparently rather than fit into a single flat number.
Hollywood climate runs warm and dry for most of the year, but the marine layer and winter rains test attics just like they test roofs. A home in Los Feliz with a flat roof and tightly packed rafters may need a different approach than a hillside home with a steep pitch. The insulated outcome is the same – lower cooling costs, fewer hot spots – but the path to it changes. That’s the case for a specialist who sees this geography every week rather than a generalist guessing at it.
How to Save on Blown-In Insulation
The biggest savings lever isn’t cheaper material. It’s doing the job right the first time. A $1,900 project done correctly beats a $1,200 project that gets re-done two years later.
- Get air sealing bundled. Air sealing and blown-in insulation done together cost less than two separate visits.
- Choose cellulose where it fits. GreenFiber recycled cellulose delivers strong R-value performance per dollar and beats premium mineral wool on price for most attic applications.
- Do the whole attic, not just half. Partial coverage leaves thermal bypasses and undermines the sections you did insulate.
- Time it right. Fall and winter are lighter on the schedule. Not a price discount exactly, but easier access to scheduling and less risk of delays.
- Skip removal unless we flag it. If the existing material is still sound, top-off saves real money over a full removal and re-blow.
- Take the free estimate seriously. Call (866) 605-6949 and we’ll walk the attic with you, tell you what R-value you’re actually at, and quote the number. No pressure, no upsell speech.
For a deeper look at the method itself, our Blown-In Insulation in Hollywood page covers how the install works and what to expect from the crew. Start with our home page if you’re new here.
FAQs – Blown-In Insulation Cost
How much does blown-in insulation cost in Hollywood for a typical attic?
$1,400 to $3,800 for most Hollywood single-family attics in the 1,200 to 1,800 square foot range. That includes material and installation. Air sealing scope, R-value target, and attic access move the number within that band. Call (866) 605-6949 for an exact quote – estimates are free.
Is blown-in insulation cheaper than spray foam or batt?
Yes. Blown-in generally costs less per square foot than closed-cell spray foam and comparably to or below batt for attic applications. Icynene and Demilec spray foam cost more but seal and insulate in one step, which is why some homes are better served by a hybrid. We install all three methods because the right answer depends on the space.
What R-value do I need in Hollywood, and does higher R-value cost more?
California’s Title 24 code for Hollywood’s climate zone generally calls for R-38 to R-49 in attics. Yes, higher R-value costs more – more material depth, more labor. Jumping from R-30 to R-49 often adds $400 to $900 depending on square footage. Worth doing once.
Can you fix uneven room temperatures with blown-in insulation?
Often yes. Uneven temperatures usually trace to air leakage and low R-value, not the HVAC system. Blown-in material plus air sealing at the top plates and penetrations typically eliminates hot and cold spots. Not a guarantee until we look at your attic, but it’s the most common outcome. Call for a walkthrough.
How long does blown-in insulation take to install?
A typical Hollywood attic takes one day for a single crew. Larger or dual-scope jobs with air sealing and removal may spill into a second day. You’ll know the schedule before we start. Free estimates: (866) 605-6949.
Pricing reflects the Hollywood market as of 2026. Hollywood Insulation Co offers free estimates – call (866) 605-6949.
What Our Customers Say
"Plastic laid from the front door to the attic hatch and they vacuumed the hallway afterward."
— Heather Walsh"Attic was at maybe R-11 from the 1970s and blown in over the top would have just buried the problem. They removed the old material, air sealed the top plates and penetrations first, then blew in to R-49. The upstairs is a completely different house in August."
— Cole Sullivan"Found and sealed a gap around the chimney chase that was basically an open chimney to the attic."
— Brandon Wong