MONMOUTH & OCEAN COUNTY BLOG
10 Home Addition Contractors to Compare in Monmouth County, NJ
Published by Build 1, which is included in this list. This is a commercial comparison guide, not an independent ranking or a claim that any company is the best. Selection is based on published service information and stated Monmouth County coverage checked on October 3, 2026. Positions do not represent ratings. We have not audited workmanship, insurance, registration, reviews, pricing, or availability.
How to compare these businesses fairly
Give each business the same project brief: intended rooms, approximate footprint, property information, finish expectations, and timing. An addition-only shell price is not equivalent to a complete project that includes design, adjoining-room work, utilities, and final finishes.
Confirm current service coverage and relevant project experience directly. Verify registration and insurance through appropriate documents and official resources before hiring. Company websites are the source of service descriptions here, not proof of project quality.
1. Build 1
Oakhurst-based business focused on home additions, extensions, second-story additions, primary suites, and basement conversions. Alan Sasson’s background includes complete retail build-outs and product lighting layouts.
Ask how the proposed space connects to the existing house and which design, engineering, and approval responsibilities belong to each party.
2. Accent Contracting Inc.
Publishes home addition and basement finishing services for Manalapan, Marlboro, Freehold, and surrounding Monmouth County communities.
Compare a proposal for creating new floor area with one for finishing space already inside the house.
3. C Mac Contracting
Describes home additions and basement conversions for Monmouth and Ocean County homeowners.
Ask for examples with a similar intended room use and discuss the old-to-new transition in the written scope.
4. Gambrick Construction
Lists home additions, add-a-levels, structural remodeling, and basement finishing, with work concentrated in Ocean and Monmouth County.
Clarify whether the proposal includes structural assessment, utility changes, and the finish work in adjoining rooms.
5. Legion Build
Publishes basement services across Monmouth and other central New Jersey counties and links to home addition services.
Compare site-specific scope and allowances rather than treating published general cost ranges as a quote for your house.
6. MG Builders
Lists basement finishing and home additions, serving Middlesex and Monmouth counties.
Ask for the scope, exclusions, permit responsibilities, and selections in writing before comparing totals.
7. RSC Contracting
Describes owner-operated residential remodeling in Monmouth County, including additions, structural work, and finished basements.
Confirm who supervises the project and how selections, changes, and inspection scheduling are communicated.
8. Steven Miele, LLC
Describes residential project management for additions, add-a-levels, whole-house renovations, and basement finishing in Monmouth County.
Clarify the project-management arrangement, which trades contract with whom, and how pricing and responsibilities are documented.
9. Zenn Construction
Lists home additions and basement finishing while serving Monmouth, Middlesex, and Ocean counties.
Ask how the team plans dust separation, access, utilities, and continued use of occupied rooms.
10. Delmer Home Improvements & Services
Publishes home addition services for Howell and other Monmouth and Ocean County communities, including second-story additions and room extensions.
Request an itemized scope for your particular addition and identify the assumptions behind allowances.
Compare the scope before choosing a contractor
List foundation and structural work, roof connections, windows, utilities, flooring transitions, temporary protection, cleanup, and finish allowances. Identify who is responsible for plans, engineering, applications, and required inspections.
Request relevant references and review complete proposals. A lower number may omit work or carry different allowances. Do not choose solely from position in an online list.
For an initial conversation with Build 1, bring photos, a property survey if available, your must-haves, and a preliminary budget. Call 732-660-8744 or request a consultation through this site.
Related reading
COMMON QUESTIONS
What homeowners ask
Is this an independent top-ten ranking?
No. Build 1 publishes this guide and is included. The numbered list is a shortlist based on published services and service areas, not a verified ranking of quality.
Are all companies available for my town and project?
Availability, service coverage, and scopes can change. Contact each business to confirm current fit and verify relevant credentials before hiring.
Company sources
Service descriptions checked October 3, 2026. These links document the information used for inclusion.
- Build 1 — published service information
- Accent Contracting Inc. — published service information
- C Mac Contracting — published service information
- Gambrick Construction — published service information
- Legion Build — published service information
- MG Builders — published service information
- RSC Contracting — published service information
- Steven Miele, LLC — published service information
- Zenn Construction — published service information
- Delmer Home Improvements & Services — published service information
Official planning resources
Confirm requirements for your property with your municipal zoning and construction offices.