Professional Home Addition& ADU Contractor Services
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Expert Home Addition Contractor Services
When your home needs more space, the right home addition contractor makes all the difference. At McCarthy Exteriors, we specialize in building high-quality home additions that seamlessly blend with your existing structure. Whether you're expanding your living space, adding a new bedroom, or designing a custom layout to accommodate your growing family, our team ensures exceptional craftsmanship and reliable service from start to finish. Every project begins with a clear vision and ends with a space that enhances comfort, functionality, and long-term value.
Custom Room Additions for Growing Families
Adding a new room is one of the most effective ways to increase living space without relocating. From extra bedrooms to expanded living rooms and home offices, our team creates custom additions tailored to your exact needs. A well-planned home addition improves household flow, increases usable space, and boosts property value. Our contractors handle all phases of planning, permitting, framing, roofing, windows, and final finishing ensuring your addition feels like it has always been part of your home.
Accessory Dwelling Unit (ADU) Construction
At McCarthy Exteriors, we specialize in designing and building high-quality Accessory Dwelling Units (ADUs) that add functional living space, increase property value, and create flexible solutions for modern homeowners. Whether you're looking to accommodate family members, generate rental income, or build a comfortable private retreat, our team delivers custom ADUs that blend seamlessly with your existing home and meet all local building requirements. From initial planning and design to full construction and finishing, we handle every detail with precision and craftsmanship. Our ADUs are built to be efficient, durable, and beautiful enhancing both your property and your lifestyle. Trust McCarthy Exteriors to bring your ADU vision to life with expert guidance, transparent communication, and exceptional results.
Garage, Sunroom & Bonus Space Additions
Not all additions are interior-focused. Many homeowners choose to add garages, sunrooms, mudrooms, or bonus rooms to increase convenience and overall livability. A new garage provides secure storage and protects vehicles, while a sunroom creates a bright retreat that can be enjoyed year-round. Bonus rooms offer flexibility ideal for playrooms, guest areas, or home gyms. No matter which type of space you envision, we build structurally sound, energy-efficient additions designed for longevity and daily enjoyment.
Seamless Structural Integration & Exterior Matching
A great home addition doesn’t look like an addition, it looks like it’s always been part of the home. We take great care to match roofing materials, siding textures, color palettes, window styles, and architectural features. This ensures both visual continuity and structural integrity. Our skilled craftsmen use premium materials while aligning with local building codes and best practices. For exterior components such as new roofing or siding installation, our team is already equipped to provide full-service support through Exterior Services offerings
Testimonials
What Our Customers Say About McCarthy Exteriors LLC
Homeowners and property managers across Brookline, Hollis, Milford, and nearby New Hampshire towns trust McCarthy Exteriors for their roofing, siding, windows, doors, decking and home addition needs. With decades of experience, competitive pricing, and outstanding customer service, we consistently deliver exceptional results our clients can count on — every time.
Larry Bruno
Tyler and his crew were awesome to work with. They were efficient with all their work and materials and left a fantastic finished product. I would highly recommend them to any family or friends for any of their projects. I went with a Harie siding product on my home and was nervous of hiring a contractor that did not know what they were doing, but these guys put all my worries to rest on the first day.
Kristi Legere
I had a fantastic experience working with Tyler McCarthy from McCarthy Exteriors. Tyler maintained excellent communication throughout the entire project, always keeping me informed and promptly addressing any changes that arose. His attention to pricing was impressive, and he consistently provided me with options to manage costs effectively. Tyler’s depth of knowledge in the field was evident, and he confidently utilized his extensive resources to tackle any uncertainties that emerged.
Homeowner in NH
From quote to completion, McCarthy Exteriors delivered top-notch service. Their team was punctual, detail-oriented, and respectful of my home. The new roof looks amazing and the entire process was stress-free. Truly a five-star experience.
McCarthy Exteriors LLC
Your Trusted Roofing & Exterior Experts in Southern New Hampshire
Delivering expert roofing, siding, windows, doors decks and home addition needs with top-tier craftsmanship and care. We proudly serve homeowners across Brookline, Hollis, Milford, and nearby towns — offering fully licensed and insured service with free consultations and dependable results you can trust.
FAQs
Frequently Asked Questions About Roof Home Additions in New Hampshire
What does a home addition contractor do?
A home addition contractor manages planning, design assistance, permitting, construction, and finishing for all types of home additions. They ensure the new structure blends properly with the existing home.
How long does a typical home addition take?
Most home additions take 6 - 12 weeks depending on size, complexity, and permitting requirements. Your home addition contractor will provide a detailed timeline before work begins.
Are home additions a good investment?
Yes. Well-designed home additions significantly increase living space, functionality, and home value. Many additions offer a high return on investment, especially bedrooms, kitchen expansions, and garages.
Do I need permits for a home addition?
In almost all cases, yes. A licensed home addition contractor will handle permitting, inspections, and code compliance so the project meets all local building regulations.
Can you match my existing exterior materials?
Absolutely. We specialize in matching roofing, siding, windows, trim, and architectural details so your new home addition blends seamlessly with your current structure.
What types of home additions can you build?
We construct all types of home additions including room additions, kitchen expansions, garages, sunrooms, mudrooms, second-story additions, and full-scale home extensions customized to your needs.
CONTACT McCarthy Exteriors LLC
Expert Roofing & Exterior Services in Southern New Hampshire — Book Your Free Estimate Today
Enhance the safety, value, and curb appeal of your home with professional roofing, siding, window, door, deck and home addition services. Whether it’s a full roof replacement or a custom-built deck, getting started early can help you avoid costly repairs later.
“At McCarthy Exteriors, we offer free, no-obligation estimates to help you plan your next home exterior project with confidence. Our fully licensed and insured team proudly serves Brookline, Hollis, Milford, Amherst, and surrounding NH communities — delivering high-quality results, every time.”
Transform your home’s exterior with McCarthy Exteriors LLC — your trusted partner for roofing, siding, windows, doors, and decks in Southern New Hampshire. Based in Brookline and proudly serving Hollis, Milford, Amherst, and beyond, our licensed team brings over two decades of craftsmanship and reliability to every project.
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