Insulation Contractor in Inglewood, CA - Cooler Rooms and Sealed Attics
D&J Hawthorne Insulation Services is an insulation contractor working in Inglewood, CA. We add attic insulation, seal the leaks behind hot rooms and drafty floors, and clear out old, dirty insulation before anything new goes in.

- Service area
- Inglewood, CA
- Call
- (424) 307-8033
Houses and small buildings across Inglewood
We're an insulation contractor based in Hawthorne, CA, just south of Inglewood, and the calls we get from Inglewood sound a lot like the ones from home. A bedroom that won't cool down at night, a room over the garage that bakes by afternoon, a power bill that jumps every time the AC kicks on.
Most of our work here is in single-family houses, with some duplexes, small apartment buildings and storefronts mixed in, and many of the houses have been standing a long time. That usually means a few tired inches of insulation, ceilings full of can lights and pipe holes nobody sealed, and sometimes ductwork running across the attic floor. We see the same thing in Lennox and Gardena, and it decides how the job goes, because in an attic like that the gaps and anything wrong underneath have to be fixed before we add a single bag.
Our services in Inglewood, CA
A lot of Inglewood attics still have a few thin inches from years ago, which is why the back bedrooms stay hot into the night. Our attic insulation work brings the depth up evenly, edges included, and keeps the eave vents clear so the attic can still breathe.
Ceilings here are full of small openings around can lights, pipes, vents and the attic hatch, and hot attic air pushes through every one of them. We seal those gaps first, because insulation laid over an open gap just ends up fighting a draft.
When the old insulation is soaked from a past roof leak or full of droppings, piling more on top only buries the problem. We bag it out, clean up, and make sure the leak or the pests are dealt with before anything new goes in.
Houses on raised floors often feel cold underfoot because nothing sits between the floor and the open crawl space below. We insulate under the floor and check for moisture and loose debris down there before we start.
Foam costs more than loose fill, but it seals and insulates in one pass, which earns its price when your ductwork runs through the attic. I'll tell you plainly when foam is worth it and when sealing and topping up does the job for less.
Small shops and offices around the city deal with the same hot ceilings and high power bills, often in spaces that are harder to get into. We look at the building first and plan the work so it fits how the space is used.
Every service we offer
Spray foam insulation
Attic insulation
Blown-in insulation
Home insulation
Insulation removal
Crawl space insulation
Wall insulation
Air sealing services
Basement insulation
Closed-cell foam insulation
Open-cell foam insulation
Commercial insulation
Crawl space vapor barrier
Vapor barrier installation
Attic air sealing
Retrofit insulation
What happens when you call us about an Inglewood home
Call or send the form
Tell us what's going on, like a hot bedroom or a drafty hallway, and we'll call you back to set a time to come look. We answer the phone into the evening, seven days a week, so a weekday after work is fine.
I inspect the space myself
I come out, go up into the attic or down into the crawl space, and check how many inches are already there and what's going on underneath. You get a written estimate with the price, the plan and anything that should be fixed first, like a roof leak or bad wiring, so you know the full number before anything starts.
Our crew seals, then insulates
The crew covers your floors and belongings, seals the gaps around lights, pipes and the hatch, and only then puts the insulation in. They keep the eave vents open and fill the edges as well as the middle, since thin edges are where most attics fall short.
We walk the finished job
Before we call it done, I check the crew's work and walk it with you, so you see the depth, the sealed gaps and the clear vents for yourself. Ask anything you want while we're there, because I'd rather you understand what you paid for.
Questions from Inglewood homeowners
Who issues building permits in Inglewood, CA?
The City of Inglewood's Building Safety Division issues building permits, along with electrical, plumbing, mechanical and grading permits. The division also reviews plans and handles inspections, and you can reach it at (310) 412-5294 with permit or inspection questions.
Do I need a permit to insulate my attic in Inglewood?
Check with the city before work starts, because Inglewood's permit guidance says a building permit is required whenever a building is altered, improved, repaired or enlarged, not only when something new goes up. That wording reaches a lot of work on existing houses. When a job needs a permit, we pull it and set up the inspections ourselves.
How do I request a building inspection in Inglewood?
Inspections in Inglewood are requested online through Building Safety's OpenGov portal, and the homeowner or the contractor books each one there. On jobs where we pull the permit, we book the inspections, so you don't have to learn the portal.
How do I find out what a building permit costs in Inglewood?
Call Building Safety and ask, because the city sets permit fees by the type and complexity of the project and invites owners to call for an estimate on theirs. Have a short description of the work ready, since the fee follows what you're having done.
How much does attic insulation cost in Inglewood?
The price comes down to the size of your attic, how much insulation is already up there and what has to be fixed or removed before new material goes in. Soaked or dirty insulation has to come out first, gaps around lights and pipes add sealing time, and spray foam costs more than blown-in, which is loose fill blown through a hose. For most attics here, sealing the gaps and topping up wins unless your ductwork runs up there, and your written estimate gives you the exact number.
Do I need an appointment to get a permit at Inglewood Building Safety?
For some counter services, yes, and you book those through the city's QLESS appointment system. That covers plan check submittal and over-the-counter and ready-to-issue permits, and the division says projects that need plans will be submitted digitally.
Get a free written insulation estimate for your Inglewood home
Send the form or call, and we'll get back to you within one business day to set a time. I'll come out to your Inglewood home myself, look at the attic, walls or crawl space and put the price and the plan in writing, free and with no pressure to book. We're fully licensed and insured.
- Call
- (424) 307-8033
- Location
- Hawthorne, CA 90250
- Hours
- Mon–Fri: 8 AM–11 PM, Sat–Sun: 7 AM–11 PM
Tell us what your Inglewood house is doing
Call (424) 307-8033 or send the form with what you're noticing, and ask how Inglewood's permit and inspection steps would apply to your job.




