Bridgewater Township · Somerset County
Siding in Bridgewater, NJ
85% owner-occupied, with the highest home values of the five towns we cover. Here's what that means for your siding, what a replacement costs, and how to get one honest local quote.
Source: ACS 2020–2024 5-year estimates for Bridgewater township, via Census Reporter.
Bridgewater's homes and what they mean for siding
Bridgewater has about 17,000 homes. It was largely farmland until the 1960s, so its housing is a little newer than the Middlesex towns we cover: the median build year is 1981, and 48% of homes predate 1980. More houses here are on their first siding from the 1980s and 1990s rather than a second or third layer. 85% are owner-occupied and the median value is about $605,500, the highest of the five, so many owners weigh how new siding will look at resale. Nationally, fiber-cement siding replacement recouped 113.7% of its cost at sale in the 2025 Cost vs. Value report, and vinyl recouped 96.5%.
Where you are in Bridgewater matters
The township takes in Bradley Gardens, Bridgewater Center, Finderne, Green Knoll and Martinsville. The Raritan River and its North Branch form much of its southern and western edges, and the northeast is hilly, with the First Watchung Mountain running through it. Somerville and Raritan were carved out of the township long ago and are separate boroughs, so check which town your address belongs to before you call about a permit.
What siding costs
There is no official New Jersey figure, but the 2025 Cost vs. Value Report gives national averages: about $17,950 for a vinyl siding replacement and $21,485 for fiber cement. What moves a Bridgewater quote up or down is wall area and stories, trim, soffit and fascia, and what the crew finds under the old siding. See the full New Jersey cost guide →
Permits and paperwork
Replacing existing siding on a one- or two-family home is ordinary maintenance under N.J.A.C. 5:23-2.7, so it normally needs no permit. Polypropylene siding is the exception. Whoever does the work must be registered with the New Jersey Division of Consumer Affairs, show that registration number on the contract, and give you a written contract for anything over $500.
Questions from Bridgewater homeowners
Do I need a permit to replace siding in Bridgewater?
Usually not. Under New Jersey's construction code (N.J.A.C. 5:23-2.7), replacing existing siding on a one- or two-family home is ordinary maintenance and needs no permit. Polypropylene siding is the exception. If you're unsure, or the house has more than two units, call the Bridgewater township construction office before work starts.
How much does siding cost in Bridgewater?
Nationally, a typical vinyl siding replacement ran $17,950 and fiber cement $21,485 in the 2025 Cost vs. Value Report. In Bridgewater, where the median home was built in 1981, the biggest swing is usually what's under the old siding: extra layers or soft sheathing add cost. Get it priced in writing up front.
How do I check a siding contractor in Bridgewater?
Ask for their New Jersey home improvement registration number, which must appear on their ads, contracts and business documents. Ask for proof of liability insurance (the state minimum is $500,000 per occurrence) and insist on a written contract, which is required for any job over $500.
I live in Martinsville or Finderne. Is that Bridgewater?
Yes. Martinsville, Finderne, Bradley Gardens and Green Knoll are communities within Bridgewater Township, so the township's construction office is the one to call with any permit question. Somerville and Raritan are separate boroughs.
Nearby towns
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