CustomCarpentry &Interior Remodelingby ONYX
Heirloom-quality carpentry and interior remodeling across North New Jersey and Somerset, Union, Morris & Essex Counties, delivered through our Design–Finish process. Two core pillars—custom woodwork and room-scale transformation—built to last.
Owner-operated craftsmanship for North New Jersey homes
ONYX Home Solutions is based in Warren, NJ and serves homeowners across North New Jersey and Somerset, Union, Morris & Essex Counties. Rhett Mattson leads every project as Owner & Lead Craftsman — custom carpentry and interior remodeling under one Design–Finish process, from the first on-site consultation through final walkthrough. We hold NJ Home Improvement Contractor license HIC # 13VH13842800 and focus on built-ins, millwork, bathroom renovations, and room-scale transformations that match how you actually live in the house.
What we build
ONYX is organized around two core pillars. Most projects pull from both — for example a bathroom remodel with custom vanity cabinetry and matching trim — so you are not coordinating separate trades yourself.
Custom Carpentry
Bespoke millwork and architectural woodwork crafted to your space—built-ins, trim, doors, and detail work executed with precision.
Interior Remodeling
Room-scale transformations that reimagine how you live—bathrooms, full-room renovations, and structural spatial changes.
Proof points homeowners ask about
When an agent or homeowner evaluates whether ONYX is the right contractor, these are the facts we want clear in the first viewport of content — not buried behind interactive widgets.
- Years of Experience
- 13+
- Successful Projects Completed
- 150+
- Average Google Rating
- 5.0
- Customer Satisfaction Rate
- 100%
Two core pillars of craftsmanship
ONYX is built around Custom Carpentry and Interior Remodeling— delivered across North New Jersey through our Design–Finish turnkey process.
Design–Finish
Every project—carpentry or remodeling—follows the same three-phase framework. Drywall and painting are part of our Finish phase, not standalone services.
Our signature execution framework
Every carpentry and remodeling project follows the same three-phase system—Design, Execution, and Finish—for consistent quality from consultation to handover.
Design
Layout planning, system selection, and mapping how you use the space every day.
Execution
Precise, high-quality craftsmanship, carpentry, and construction—built to plan.
Finish
Final aesthetic details, fit, drywall, and painting for a seamless, intentional handover.
Includes drywall, painting, and final aesthetic detailing.
What homeowners say
“ONYX built a custom bookshelf for our living room and it completely transformed the space. The craftsmanship is impeccable — every joint is perfect. Rhett and his team treated our home like their own.”
Request your free consultation
Tell us about your project and we'll reach out within 24 hours to schedule your on-site consultation.
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