Looking for an addition contractor in Boonton, NJ? Describe your project once and up to five addition contractors who work in Boonton and Morris County get back to you with a quote. It's free and there is no obligation.
Boonton is home to about 8,894 people (2024 Census Bureau estimate), a stable community (+0.9% since 2020). With 3,798 people per sq mi, it is a suburban area. Growing families here often add space instead of moving.
Boonton at a glance
- Population (Census Bureau estimate, 2024)
- 8,894 (+0.9% since 2020)
- Rank in New Jersey
- 130th of 323 cities and towns
- Land area
- 2.3 sq mi
- Population density
- 3,798 people per sq mi (suburban)
- Type
- Town (Boonton town)
- Main county
- Morris County
What to check before hiring in Boonton
- Zoning: check Boonton's setbacks, lot coverage and height limits first.
- License and permit: in New Jersey, additions are built by licensed contractors under a permit.
- Structure: second stories need an engineer to check the existing house.
- Price drivers: size, foundation, roof tie-in, plumbing and finishes.
Useful official resources
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ICC: International Code Council
Official information and guidance.
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NAHB
Official information and guidance.
Services available in Boonton
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Room addition
Ground-floor addition with foundation, framing, roof and finishes.
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Second-story addition
New floor over the existing house, with structural engineering.
Frequently asked questions in Boonton
How much does an addition cost in Boonton, NJ?
It depends on size, foundation and finishes. Describe your project: contractors who serve Boonton reply with a quote.
How long does it take?
Often a few months, plus design and permits.
Does an addition raise property taxes?
Usually, since it increases the assessed value.
Which addition contractors will contact me?
Up to five independent addition contractors who serve Boonton and the surrounding area, chosen for the service you need. Your details are shared only with your consent.
Source: U.S. Census Bureau, Population Estimates Program (Vintage 2024) and Gazetteer Files (public domain), imported on 10/31/2026. Figures describe the incorporated place or county as published; they are shown for information only.