ServicesRoom Additions

Room Addition & Repair Service

Love your neighborhood but need more space? We design and build seamless room additions — from master suites and family rooms to full second stories. Serving Howell, NJ and surrounding areas.

80+
Additions Completed
23
Years Experience
4.9★
Average Rating
100%
Fully Permitted
What We Build

Room Addition & Expansion Services

Every addition is engineered, permitted, and built to seamlessly integrate with your existing home — inside and out.

Master Suite Additions

Add a luxurious master bedroom and en-suite bath — creating the private retreat you've always wanted without moving.

Family Room Extensions

Bump out your living space with a seamlessly integrated family room addition — full foundations, framing, HVAC, and finishes.

Second Story Additions

Double your square footage by building up instead of out. We handle all structural engineering, permits, and full construction.

Sunrooms & Four-Season Rooms

Bring the outdoors in with a light-filled sunroom — fully insulated for year-round use with heating and cooling.

Garage Conversions

Convert your attached garage into a home office, bedroom, gym, or accessory dwelling unit (ADU).

Structural Engineering

All room additions are engineered for proper load-bearing integration with your existing structure — fully permitted.

Our Process

How Your Addition Gets Built

01

Consultation & Vision

We tour your home, discuss your goals, and explore what's structurally possible within your budget.

02

Design & Engineering

Architectural drawings and structural engineering plans are created and submitted for municipal permit approval.

03

Foundation & Framing

The new foundation is poured, framing is erected, and the addition is weathered-in with sheathing, windows, and roofing.

04

Rough-Ins & Insulation

Electrical, plumbing, and HVAC are roughed-in. Insulation is installed to code before drywall.

05

Finishing & Handover

Drywall, flooring, trim, paint, and fixtures are completed. Final inspections are scheduled and passed.

Why Choose Jhay's

Stay in Your Home & Get the Space You Need

Moving is expensive, stressful, and means leaving your neighborhood and community. A well-built room addition gives you the space you need while protecting the investment you've already made in your current home.

  • We handle all permits, inspections, and municipal approvals
  • Work is coordinated to minimize disruption to your daily life
  • We match exterior materials to your existing home exactly
  • All mechanical (HVAC, electrical, plumbing) is extended properly
  • Dedicated project manager from day one to certificate of occupancy
  • Fixed-price contract — no surprise costs during construction
Room addition construction
Fully Permitted Work
Every project meets NJ building code
FAQ

Room Addition Questions

Q:How long does a room addition take?

Most room additions take 8–16 weeks from permit approval to completion. Second-story additions and larger projects may take 4–6 months. Permit timelines vary by municipality.

Q:Will a room addition increase my property taxes?

Yes — adding square footage typically increases assessed value and property taxes. We recommend checking with your township's tax assessor for specific estimates.

Q:Do you handle all the permits?

Absolutely. We prepare and submit all permit applications, coordinate with municipal inspectors at each phase, and obtain the final certificate of occupancy.

Q:Can you match the existing exterior of my home?

Yes — matching siding, roofing, brick, and architectural details is something we take great pride in. A well-executed addition should look like it was always part of the house.

Ready to Add the Space You Need?

Talk to our team about your addition vision — free estimate, no obligation.