Home Addition in NJ & PA

Looking for Your Next Home Addition Project?

Expanding your home with a custom-built addition is one of the most rewarding ways to upgrade your lifestyle and boost your property’s value. At United A&E Construction, we specialize in designing and constructing high-quality home additions that blend seamlessly with your existing structure. Whether you’re looking to add a new bedroom, extend your living room, build a sunroom, or create a multi-level addition, our team delivers spaces that are functional, beautiful, and tailored to your vision.

A home addition is more than just extra square footage—it’s about creating spaces that truly enhance the way you live. With our decades of expertise, we provide a stress-free, transparent process from start to finish.

Modern home addition exterior design

99%

Satisfied customers

Over 20 years of Construction Excellence

At United A&E Construction, we bring experience, craftsmanship, and dedication to every project. Our licensed contractors and project managers work closely with homeowners to turn unused potential into fully realized living spaces.

Experienced professionals with proven expertise

A team of skilled experts dedicated to delivering superior results.

Customer-First Approach

transparency, updates, and communication

Durable construction designed to last for generations
why choose us

Why Add Space to Your Home?

Life changes, and so do your needs. A home addition allows you to adapt without leaving the home you love.

Benefits of a home addition include:

Your home addition is an investment that pays back in both comfort and resale value.

Comprehensive Home Addition Services

We handle every aspect of your project, ensuring a seamless experience:

Site assessments and feasibility planning
Custom architectural design & 3D renderings
Permit acquisition and code compliance
Structural integration with the existing home
Framing, roofing, insulation, and siding
Interior finishing: flooring, painting, lighting, and trim
Utility hookups (electrical, plumbing, HVAC)

Our team ensures your addition feels like a natural extension of your home.

Home addition design concept

Types of Home Additions We Build

We provide a wide variety of addition options to meet different homeowner goals:

  • Bedroom Additions – expand for growing families or create a luxurious master suite

  • Bathroom Additions – add convenience and increase property value

  • Sunrooms & Conservatories – enjoy natural light and year-round comfort

  • Specialty Spaces – home gyms, offices, libraries, or playrooms

  • Multi-Level Additions – add a second story or expand your basement

  • Living Room & Kitchen Expansions – improve flow and open-concept layouts

No matter your vision, we’ll design a solution that balances beauty, functionality, and budget.

Built to Code. Built to Last.

We take care of permits, inspections, and building codes, ensuring your addition is safe and fully compliant. By using only premium materials and modern construction methods, we deliver quality that lasts.

From energy-efficient windows and insulation to durable roofing and siding, every element of your addition is designed for performance and longevity.

Transparent Pricing & Flexible Financing

Home additions are a significant investment. That’s why we provide clear, upfront estimates with line-item breakdowns—no hidden fees.

To make your project more affordable, United A&E Construction partners with trusted lenders to offer flexible financing options. Whether your goal is a simple room addition or a full-scale expansion, we’ll help you find a solution that works for your budget.

Home addition design concept

Our Streamlined 3-Step Process

  • Consultation & Planning – Free consultation to discuss goals, budget, and feasibility.

  • Design & Permitting – We create detailed designs, finalize finishes, and secure all permits.

  • Construction & Completion – Expert crews deliver your addition with efficiency and care, keeping you updated at every step.

Modern home addition exterior design

Ready to Expand Your Home?

Let’s create a custom home addition that enhances your lifestyle, adds value, and makes your home truly yours.

Depending on scope, most additions take 3–6 months from design to completion. The timeline covers architectural plans and permits, foundation and framing, roofing and exterior work, then mechanical, insulation, drywall, and finishes. Permit review times in your township are built into your project plan upfront.

Yes — home additions require building permits and multiple inspections. We handle the full process for you: preparing plans, filing with your local building department in New Jersey or Pennsylvania, and scheduling each required inspection from footing to final.

Absolutely. We match rooflines, siding, trim, and window styles to your existing structure, and carefully source materials that blend with the original construction — so the addition looks like it was always part of the house, inside and out.

Costs vary depending on size, complexity, and finishes — a sunroom or bump-out costs far less than a full second-story addition. We provide detailed written estimates upfront with transparent line items, and financing options are available.

Yes — properly built additions significantly raise resale value and market appeal, especially added bedrooms, bathrooms, and family rooms. An addition is often more cost-effective than moving when you need more space.

Ready To Start? Give Us a Call TODAY

Our Home Addition Process — What to Expect

  1. Site Survey & EngineeringEvery home addition begins with a licensed surveyor confirming property lines and setbacks. A structural engineer reviews existing foundation capacity and designs the new foundation, framing, and load connections. Zoning and FAR (floor area ratio) compliance is confirmed before permit application.
  2. Permit Application & ReviewWe prepare and submit permit application drawings to the local building department in NJ or PA. Depending on municipality, plan review takes 4–12 weeks. We respond to any reviewer comments and secure permit approval before breaking ground.
  3. Foundation & StructureNew foundation is excavated, formed, and poured per engineering specifications. Waterproofing, drainage board, and insulation are applied before backfill. Framing connects to the existing structure at engineered tie-in points with structural hardware.
  4. Envelope & MEP Rough-InNew roofline is tied in and weathertight before interior rough-in begins. Mechanical, electrical, and plumbing rough-in is coordinated. Insulation is installed per current energy code (RESCHECK) before drywall.
  5. Interior Finish & IntegrationDrywall, paint, flooring, trim, and fixtures are completed in the new addition. Transitions between old and new construction are matched as closely as possible. Final inspections occur for each trade before Certificate of Occupancy is issued.

How long does it take to build a home addition?

A typical single-room addition (400 to 600 square feet) takes 4 to 6 months from permit approval to Certificate of Occupancy in NJ or PA. Permit review alone can take 6 to 12 weeks depending on the municipality. Two-story additions and additions with significant structural complexity run 6 to 9 months. We provide project-specific schedules at the estimate stage.

Will an addition require a new foundation?

In most cases, yes. Additions built over ground level require a new foundation — typically poured concrete footings and foundation walls engineered to match the soil conditions and frost depth requirements of your county in NJ or PA. Bump-out additions (typically under 2 feet) can sometimes be cantilevered from existing floor framing without new foundation work, subject to engineer review.

What happens if the addition reveals existing problems in my home?

Renovation discoveries — rot, knob-and-tube wiring, asbestos-containing materials — are documented in writing and presented with options before any additional work is performed. We do not proceed past the discovery point without your written approval. All change orders are priced in advance with your signature required before work continues.