Looking for an addition contractor in Neptune City, NJ? Describe your project once and up to five addition contractors who work in Neptune City and Monmouth County get back to you with a quote. It's free and there is no obligation.
Neptune City is home to about 4,599 people (2024 Census Bureau estimate), a stable community (−0.4% since 2020). With 5,134 people per sq mi, it is a densely built-up area. Growing families here often add space instead of moving.
Neptune City at a glance
- Population (Census Bureau estimate, 2024)
- 4,599 (−0.4% since 2020)
- Rank in New Jersey
- 205th of 323 cities and towns
- Land area
- 0.9 sq mi
- Population density
- 5,134 people per sq mi (densely built-up)
- Type
- Borough (Neptune City borough)
- Main county
- Monmouth County
What to check before hiring in Neptune City
- Zoning: check Neptune City'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 Neptune City
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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 Neptune City
How much does an addition cost in Neptune City, NJ?
It depends on size, foundation and finishes. Describe your project: contractors who serve Neptune City 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 Neptune City 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.