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Leland, NC
3 miles west
Median home built 2010 (Belville: 2005); 35,731 people, about 11 times Belville's population
Attic insulation in LelandAttic Insulation in Belville, NC
Blown-in attic insulation for Belville, NC, 3 miles from Leland, plus removal and air sealing.
About Belville and Its Homes
Belville, on the Brunswick River a few miles from the port of Wilmington, was incorporated by the General Assembly in 1977 on ground the town says once held rice fields and plantations. Its homes are young, and the housing figures on this page date most of them to 1970 or later.
Belville, in Brunswick County, grew from 2,376 people in 2020 to 3,199 in 2025 (Census Bureau estimates), on 1.7 square miles.
Belville has about 1,030 housing units, 1 percent of Brunswick County's; about 56 percent of the town's households own their home.
Belville at a Glance
- County: Brunswick County
- Population: 3,199 (2025), 2,376 (2020), up 34.6%
- Land area: 1.7 square miles (1,882 people each)
- Housing units: about 1,030 (±125)
- Median year built: 2005 (±3); Brunswick County: 2002
- Owner-occupied: 56% (±7); Brunswick County: 85%
- Detached houses: 69% (±3); Brunswick County: 69%
- Attached houses: under 3%
- Apartments: 25% (±10)
- Mobile homes: under 10%
- Climate zone: 3 on both maps
- ENERGY STAR target for Belville attics: R-49 from bare, R-38 over 3 to 4 inches (R-value guide)
Census Bureau estimates for Belville, 2020 to 2024 (± margin of error).
Attic Insulation in Belville
If the joists show above the insulation in a Belville attic, ENERGY STAR says to add more insulation.
From 1990 to 2009, about 45 percent of Belville homes were built to codes below ENERGY STAR's target; check their eaves, where ENERGY STAR says insulation is often thinnest.
The Local Climate
Belville's center sits near sea level, 5 miles from NOAA's Wilmington International Airport station, the best match for Belville. The station's 1991 to 2020 normals average about 2,330 heating and 2,130 cooling degree days a year, so Belville attics work in both seasons.
Readings change over short distances around Belville: NOAA's Wilmington 7 N station, 7 miles away, averages about 2,750 heating degree days. The state energy code marks Brunswick County warm and humid.
Homes by Age: What It Means for the Attic
Some 69 percent of Belville housing units are detached single-family houses. With about 1,030 housing units in Belville, read the figures as rough proportions.
Built from 1970 to 1989, 18 percent of Belville homes may hold settled fiberglass; check its depth against the joists.
About 10 percent of Belville's housing units predate 1980; nearly all predate the state's 1978 insulation rule too. About 25 percent of Belville units sit in buildings of two or more homes, where the attic is often shared.
Homes by Year Built
- Before 1940: under 1%
- 1940s: under 2%
- 1950s: under 1%
- 1960s: under 1%
- 1970s: 9% (±4), about 95 units
- 1980s: 9% (±4), about 90 units
- 1990s: 17% (±5), about 180 units
- 2000s: 28% (±6), about 290 units
- 2010s: 35% (±13), about 360 units
- 2020 or later: under 1%
Air Sealing and Duct Sealing in Belville
In Belville, 92 percent of homes heat with electricity; where that heat is forced air, ducts often run through the attic.
Air sealing comes first, as the EPA advises: wire and pipe holes, wall tops and soffits.
How Homes Here Are Heated
- Electricity: 92% (±3), about 920 households; Brunswick County: 87%
- Piped gas: under 13%, about 65 households
- Bottled or tank gas: under 3%, about 15 households
Power, Gas and Rebates
Power in and around Belville comes from Duke Energy Progress and Brunswick Electric; your bill says which. For gas, Belville is in the Brunswick County franchise of Piedmont Natural Gas, whose mains may not reach every street in Belville. Duke's free House Call fits many Belville homes: 92 percent heat with electricity.
Rebate to check if Duke Energy Progress serves your Belville home: Smart $aver Insulate and Seal (Duke Energy; Insulation Pros is an approved trade ally). Before a job in Belville, check its current terms; the Brunswick County page lists every program.
Attic Insulation Removal in Belville
In a Belville attic, only wet, moldy or animal-soiled insulation is vacuumed out (ENERGY STAR's test), once the cause is fixed, and after mice that Belville attic is sanitized and deodorized; dry, clean insulation stays.
Also Serving Near Belville
Nearest to Belville first.
Wilmington, NC
6 miles east
Median home built 1989 (Belville: 2005); 126,809 people, about 40 times Belville's population
Insulation contractor serving WilmingtonSandy Creek, NC
10 miles northwest
280 people, under a tenth of Belville's population
Attic insulation in Sandy CreekNorthwest, NC
11 miles northwest
Median home built 1997 (Belville: 2005); 1,096 people, about a third of Belville's population
Attic insulation in Northwest
Belville Insulation FAQs
My newer Belville house has a lot of recessed lights. Can insulation cover them?
That depends on how each fixture is rated. A can marked IC is built to sit in contact with insulation. A non-IC can needs a 3 inch gap all around it, by ENERGY STAR's rule, and the same agency lists recessed lights among the places where house air slips into the attic. So we check every can. Rated ones get sealed and covered. Unrated ones keep their clearance, or an electrician swaps them for rated fixtures first.
Are there historic houses or district rules in Belville?
None that shape attic work. No Belville property appears among Brunswick County's National Register entries, and the preservation office's 2023 roster of local historic commissions skips the county entirely. Belville's history lies more in its land. The county's 2010 architectural survey notes a winnowing house for rice on the old Belleville Plantation in 1844, and a row of state highway markers along River Road. Your attic is judged by your own house.
Does attic insulation in Belville need a permit?
Belville Town Hall can say whether Brunswick County Permits & Development, the town itself or another office handles permits in Belville; ask before work starts.
Helpful Guides
- Brunswick County is warm and humid by the state energy code: attic condensation and mold and attic ventilation
- Median home built 2005: a hot upstairs and bonus rooms over garages
Sources
Census Bureau figures for Belville, NOAA normals for the Wilmington International Airport station (October 2026). Compiled by Insulation Pros. How the town pages are made.
Sources for the Belville introduction and questions (read October 20, 2026):
- Town of Belville, official website (home page)
- Session Law 1977-84, An Act to Incorporate the Town of Belville in Brunswick County, NC General Assembly
- Year Structure Built (table B25034), Belville town, American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau via Census Reporter
- Attic Air Sealing Project, ENERGY STAR
- Attic Insulation Project, ENERGY STAR
- NC Listings in the National Register of Historic Places, NC State Historic Preservation Office
- Historic Preservation Commission Staff in North Carolina, listed by county, as of 2/20/2023 (NC HPO)
- Comprehensive Historical/Architectural Site Survey of Brunswick County, North Carolina (Landmark Preservation Associates, 2010; listed by the NC HPO as the Brunswick County Survey, 2010)
Belville, NC
Open in Google Maps (opens in a new tab)Serving Belville, NC
Insulation Pros is an insulation contractor serving North Carolina, Belville and the rest of Brunswick County included.
Reach us
Send the square footage of your Belville attic, or call (336) 870-3893.