The median Atlantic County home was built in 1977, the year before New Jersey wrote its first statewide energy subcode, and 54.1% of the county’s 132,102 housing units were standing before that line. The two largest cohorts sit either side of it: 24.4% went up in the 1960s and 70s and 25.7% in the 1980s and 90s. 14.8% is older than 1940, and 20.2% has arrived since 2000.
57.7% of units are detached houses and 9.4% are attached townhouse and duplex halves. 9.3% sit in two- to four-family buildings, 10.7% in buildings of twenty units or more and 8.0% in buildings of fifty or more, and 3,886 units, 2.9% of the stock, are manufactured homes. 67.8% of occupied units are owner-occupied. Gas heats 71.9% of them, electricity 16.3%, fuel oil 5.9% and bottled propane 2.9%. 23,390 units stood vacant when counted, which on this coast usually means seasonal.
The county is three landscapes laid west to east. Inland is the Pine Barrens: Hammonton, Folsom, Egg Harbor City, Mays Landing and the western three-quarters of Hamilton Township, under Pinelands Commission rules since 1978. Then the mainland ring behind the bay — Pleasantville, Absecon, Northfield, Linwood, Somers Point and the growth-area subdivisions of Egg Harbor Township and Galloway. Then four miles of marsh and thorofares carrying the Intracoastal Waterway, and past that the barrier islands: Absecon Island, which carries Atlantic City, Ventnor, Margate and Longport, with Brigantine beyond. The seven town pages carry the detail.
The Atlantic County towns we work in
Each page carries that town’s own numbers and the assemblies that fail there.
- Absecon — a quarter of the map is water: knee-wall capes, bay-side crawl spaces and 28.1% built since 2000.
- Egg Harbor Township — 39.4% built since 2000 under a Pinelands growth mandate, plus 1,890 manufactured homes.
- Galloway — 46.4% built in the 1980s and 90s: insulated attics over ceilings nobody ever air sealed.
- Hamilton Township — only 52.0% detached, 2,236 townhouses, and one home in five heated with electricity.
- Hammonton — the oldest stock in the county at 65.3% pre-1980, and 10.3% of homes still burning oil.
- Northfield — 89.8% detached and 90.0% on gas: a year-round ranch-and-split town seven miles from the beach.
- Somers Point — 45.9% built in the 1960s and 70s, and only half the city is houses we can work in.
The houses across Atlantic County
The 1980s and 90s house is the county’s house, 25.7% of the stock. Galloway is 46.4% from those two decades, Hamilton Township 35.3%, Egg Harbor Township 24.3%. This was the first generation framed under an energy code, and the code reached the walls and nothing else: R-11 or R-13 batts in the cavities, blown fiber near R-19 over the ceiling, and the top plates, chases, hatch and recessed cans all left open to the house. Forty years of settling has taken that fiber below its rated depth, the eaves are wind-washed, and the air handler and duct trunk usually sit in the vented attic.
Under it sits the 1960s and 70s ranch, split-level and bi-level, 24.4% of the county. Somers Point is 45.9% from those decades, Northfield 31.0%, Hammonton 28.6%, Egg Harbor Township 22.8%. The trap is that they were insulated once, so the owner assumes the attic is handled. A split adds a bedroom over the garage with joist bays open at both ends, and a shallow attic over the low wing where the fiber is always thinnest. In a bi-level the lower level is half underground, and its band joist leaks harder than anything upstairs.
14.8% of the county predates 1940, in the old centers: the railroad grid at Hammonton, Mays Landing on the Great Egg Harbor River, the bay front at Somers Point, the old town at Absecon. Those houses are balloon-framed, stud bays running from sill to attic, with live knob-and-tube in some that comes out before a wall gets filled. Another 14.9% came out of the 1940s and 50s — Northfield 24.0%, Absecon 21.4%, Somers Point 19.2% — mostly capes. A cape fails at the knee wall: batts on the room side, nothing on the attic side, joists running out beneath to an open eave, unbaffled slopes and a shallow flat above.
The newest fifth of the county, 20.2% since 2000, is a planning decision as much as a market: the Pinelands Commission steered growth into designated regional growth areas instead of letting it spread through the pines, which is why Egg Harbor Township is 39.4% post-2000, Hamilton Township 34.9%, Absecon 28.1% and Galloway 25.1%. Those walls are full and are not the job. What fails is the party wall in a townhouse row, which stops at the ceiling drywall instead of carrying up to the roof deck; the bonus room over the garage; tray ceilings framed without baffles; and ducts and bath fans left in a vented attic.
What separates this county from a suburb inland is the bottom of the building. East of the marsh line the water table is close, full basements are the exception, and houses sit over crawl spaces or on piers with open flood vents. The failure repeats everywhere: batts stapled between the floor joists take on moisture from humid bay air, get heavy and drop into the dirt, and the band joist around the perimeter was never touched. Stop treating the crawl space as outdoors — seal and insulate the perimeter and band joist, cover the ground, bring the ducts inside the boundary. Where flood vents must stay open, closed cell foam goes into the underside of the floor deck, because it keeps its R-value after a wetting and fiberglass does not.
8.0% of the stock sits in buildings of fifty units or more, most of it on Absecon Island and Brigantine: no attic, through-wall heating and cooling units, and a board rather than an owner deciding what happens to an exterior. That is not a retrofit we do, and it is most of the reason 16.3% of the county heats with electricity.
We seal before we insulate
Insulation slows heat moving through a surface. It does nothing about air moving through a gap. Blow a Galloway attic to full depth over open top plates and chases and you have an attic full of holes with more fiber on top.
In the county’s commonest house, the 1980s or 90s colonial with an attic near R-19, the order runs: seal the hatch, top plates, chases and recessed cans; take the bath fans out through the roof; close the joist bays over the garage; seal and insulate the duct trunk if it lives up there; baffle the slopes and soffits; then insulate to R-49. On the bay side, add the band joist and the crawl space perimeter: a leaky floor and a leaky ceiling are the same stack effect at two ends. In a townhouse the party wall at the attic plate comes first.
If a quote specifies a depth of insulation and never mentions air sealing, it is half a job.
What insulation costs in Atlantic County
Most of our projects run between $3,500 and $12,500. What moves the number here is the shape of the attic — a cape’s knee walls, slopes and flat against a ranch’s single plane — the bypasses to seal first, how much duct is stranded in a vented attic, and what is under the house. Our spray foam cost guide breaks the foam side down further.
Open cell foam runs R-3.9 to R-4.2 per inch. Closed cell runs R-6.9 to R-7.1 per inch and also acts as a vapor retarder, which is why it costs more and why it is right in some assemblies and unnecessary in others. All products are manufactured in the United States and meet applicable building code and safety standards. After air sealing and insulating, homeowners typically save 20% or more on heating and cooling.
Insulation rebates in Atlantic County
Atlantic County has the simplest utility map in New Jersey. Atlantic City Electric supplies the electricity in all twenty-three municipalities and South Jersey Gas the gas in all twenty-three: Absecon, Egg Harbor Township, Galloway, Hamilton Township, Hammonton, Northfield and Somers Point, and every other town in the county with them. With 71.9% of the county on gas heat, most homeowners here start with the utility that bills them for their heating fuel — South Jersey Gas — and confirm with the other.
South Jersey Gas Whole Home Energy Solutions pays up to $7,500 in rebates: $2,000 for a modeled five percent energy saving plus $200 for every percentage point above that, capped at $7,500 and at half the project cost. With it comes 0% on-bill repayment of $2,500 to $25,000, seven years for projects of $10,000 or less and ten years above that or for income-qualified customers. It needs an active South Jersey Gas account and gas heat, and it covers single-family houses, townhomes, condos and multifamily buildings under four units, which matters where 9.3% of units sit in two- to four-family buildings. South Jersey Gas also offers a complimentary Whole Home Energy Assessment, a no-cost walk-through that installs small items on the spot.
Atlantic City Electric Whole Home Energy Solutions also pays up to $7,500, not more than half the project cost, and adds 0% financing of $2,500 to $25,000 through the program’s lender: 36, 60 or 84 months up to $10,000, 120 months above that or for income-qualified customers. That is lender financing, not repayment on your electric bill. It is open to single-family residences only, so a condominium or an apartment with separately metered units above or below is out, which closes it to much of the barrier-island stock. Atlantic City Electric publishes no per-measure schedule, so “up to $7,500” is as precise as anyone can plainly be, and it states no free walk-through, unlike the gas side. Under either program the contractor sets the assessment fee, and every project must include air sealing and the envelope work the assessment calls for, done by a contractor participating in the program.
Below the rebates sit the no-cost routes. The Atlantic City Electric Home Weatherization Program installs up to $14,000 of improvements, insulation included, plus $2,500 in health and safety updates, at no cost for income-qualified households; South Jersey Gas Home Weatherization for Income-Qualified Customers does the same for households between 250% and 400% of the federal poverty guidelines. New Jersey Comfort Partners covers households at or below 250% of the guidelines, $82,500 a year for a family of four, in buildings of one to fourteen individually metered units, and refers oil, propane and kerosene homes to the state weatherization office instead. That reaches a real slice of the county: 5.9% burn oil and 2.9% bottled propane, and neither can use the gas program.
New Jersey’s IRA Home Energy Rebates have not launched. The state’s own page says they are in development and not open for applications. The federal Section 25C tax credit ended for anything placed in service after 31 December 2025, so there is no federal insulation credit on a 2026 job, and a contractor still advertising one is a reason to read the rest of the quote twice. The full picture is in our New York and New Jersey rebate guide.
Code and climate in Atlantic County
54.1% of the county’s housing was standing before New Jersey’s first statewide energy subcode of 1 January 1978, and the median unit dates from 1977, so the stock divides almost exactly at that line. Everything on the older side was built with no insulation requirement at all.
The whole county is climate zone 4A, from Longport out to the Camden County line, though the two ends do not feel the same: January averages 33.9 degrees in central Atlantic City and 32.7 in Folsom out in the pines. The design numbers are the same in every town.
New Jersey adopted the 2024 IECC on 17 August 2026. For new construction it sets R-49 ceilings — the 2021 edition it replaced called for R-60 — walls at R-30 in the cavity or R-20 plus R-5 continuous, windows at U-0.30 in the 4A counties, and air leakage of 3.0 air changes per hour at 50 pascals. A permit application filed complete under the old code is still accepted until about 16 February 2027. R-49 is what we design to on a retrofit as well.
A house already standing falls under New Jersey’s Rehabilitation Subcode. Insulating an attic does not oblige you to bring the rest of the house up to code and does not require a blower-door test. Blown-in or batt insulation installed against the interior finish is ordinary maintenance and needs no permit; spray foam and other foam plastic insulation do need a permit, which we pull as part of the job.
Common questions about insulation in Atlantic County
Do you install insulation in Atlantic County, NJ?
Yes, in the seven towns listed above and the county around them. The work here is the detached house, 57.7% of the stock, the attached townhouse and duplex halves, and the two- to four-family buildings: 1980s and 90s growth-area colonials, 1960s and 70s ranches and splits, the pre-war frame houses of the old centers, and the capes. We work in crawl spaces and under raised houses as readily as in basements. The high-rises on the barrier islands are not a retrofit we do.
How much does insulation cost in Atlantic County?
Most projects run $3,500 to $12,500. What moves it is the shape of the attic, the bypasses to seal before anything is blown, how much ductwork is stranded in a vented attic, and what is under the house. A crawl space is priced on perimeter footage and headroom, and a raised house with open flood vents takes closed cell foam in the floor deck rather than batts. You get a written scope and a fixed price after a free walk-through.
Are there insulation rebates in Atlantic County?
Yes. Every town has Atlantic City Electric for electric and South Jersey Gas for gas, and both run Whole Home Energy Solutions with up to $7,500 in rebates. South Jersey Gas adds 0% on-bill repayment of $2,500 to $25,000 and a complimentary assessment, and takes townhomes, condos and buildings under four units, but requires gas heat. Atlantic City Electric adds 0% lender financing but is limited to single-family residences. Income-qualified households can have the work done at no cost.
Which utility do I have in Atlantic County?
Atlantic City Electric for electricity and South Jersey Gas for gas, in all twenty-three municipalities, with no split to sort out. Your heating fuel is what decides which program is open to you: 71.9% of the county heats with gas, 16.3% with electricity, 5.9% with oil and 2.9% with bottled propane. A home on oil, propane or electric heat cannot use the South Jersey Gas program, which requires gas heat and an active gas account.
Free energy audit in Atlantic County
We walk the attic with a light and a depth gauge and find what the fiber has settled to, where the soffits are washed out, and which chases, cans and fan terminations are still open. Then the ceiling over the garage, the slopes, the ducts if they live in the attic, and the bottom of the house: the band joist, the crawl space, and whether the batts between the floor joists are still up. You get a written scope and a price, at no charge and no obligation.
Call 914-825-6824 or use the contact form. Open 8am–8pm, seven days. We are a family-owned company working out of New Rochelle, NY with a 100-plus in-house crew we never subcontract, and we hold manufacturer installer certifications from the spray foam manufacturers we use.
Learn more
- New Jersey insulation rebates in full
- Attic insulation
- Crawl space insulation
- Open cell and closed cell spray foam compared
- What happens during an energy audit