Award Winning High-End Remodeling
Dreams Delivered Since 1986 — Integrated Design-Build for the Home You Love
GuildMaster Award Winner
NKBA Certified Designers
BBB A+ Rated
A home should evolve alongside your life. When your living space no longer fits your family’s routine, adding space or reconfiguring your layout is far more rewarding than leaving the neighborhood you love. G.M. Roth Design Remodeling delivers complete, integrated home remodeling in New Hampshire and Northern Massachusetts, combining architectural design expertise with dedicated project management under one roof.
40+ Years of Proven Craftsmanship
Serving homeowners across Southern New Hampshire and Northeastern Massachusetts since 1986 with thousands of completed projects.
6,000 Sq. Ft. Interactive Showroom
Experience full-scale kitchen and bath displays, custom cabinetry, and premium finishes firsthand at our Nashua, NH facility.
Dedicated Specialist Design Teams
Certified NKBA kitchen and bath designers work alongside our full-time architectural design team to plan every structural and aesthetic detail.
Our Signature 6-Step Design-Build Process
Enjoy a predictable remodeling journey defined by detailed fixed-price proposals, daily client portal updates, and clean, respectful jobsites.
Remodeling Service Grounded in Precision & Integrity
Most homeowners hesitate to begin a major remodel because they fear cost overruns, endless delays, or managing multiple independent subcontractors. G.M. Roth was founded on a simple principle: home remodeling should be an exciting, guided experience where every promise is honored and every phase is managed by experts. Don’t just take our word for it, our organization has been the proud recipient of many industry accolades over the years, including prestigious Cornerstone Awards and GuildMaster Awards.
When you partner with G.M. Roth, you work with a cohesive team of specialists. On complex projects like custom additions or whole-home reconfigurations, we pair an architectural designer with certified kitchen and bath specialists and a dedicated production manager. This collaborative structure ensures that your design vision is not only visually striking, but also structurally sound, code-compliant, and built to budget before construction ever begins.
Visualize Your Project in 3D Before Construction Begins
Experience your redesigned space through 3D architectural modeling and virtual fly-throughs. Test layouts, materials, and finishes in real time to make confident decisions before work starts.
Complete Design-Build Remodeling Services
Whether expanding your footprint, modernizing a floor plan, or adapting your home for long-term comfort, G.M. Roth provides end-to-end design and construction services tailored to your lifestyle.
Whole-Home Remodeling
Transform your entire living space through comprehensive interior reconfigurations. We redesign and reconstruct existing floor plans to improve flow, maximize usable space, and modernize high-end interior finishes. Our integrated architectural and design team handles every detail, seamlessly upgrading heating systems and structural layouts to update your home from top to bottom.
Custom Home Additions
Expanding your home requires careful architectural harmony so the new space flows naturally from the existing structure. We design and construct custom multi-story additions, expansive great rooms, and luxury primary suites. By uniting our architectural designer with interior specialists, we ensure new foundations, rooflines, heating systems, and high-end interior finishes mesh seamlessly with your original home.
Accessory Dwelling Units (ADUs) & Family Suites
Recent regulatory changes across Massachusetts and New Hampshire have made Accessory Dwelling Units (ADUs) and attached family suites an ideal solution for multigenerational living. Whether creating an independent living space for aging parents or accommodating adult children returning home, we design custom suites that balance privacy and togetherness.
Custom Kitchen Remodeling & Design
The kitchen is the functional heart of your home. Our National Kitchen and Bath Association (NKBA) certified designers specialize in transforming tight or outdated kitchens into spacious culinary centers. We analyze traffic patterns, cabinet accessibility, lighting layers, and ventilation to create a kitchen tailored to how you cook and entertain. Explore custom cabinetry, quartz and natural stone countertops, tile backsplashes, and high-performance finishes in our Nashua showroom.
Luxury Bathroom Remodeling
Turn your primary bathroom into a private, spa-inspired sanctuary. Our bath design specialists curate every element, including custom double vanities, freestanding soaking tubs, frameless glass enclosures, curbless walk-in showers, and radiant heated tile floors. We manage all plumbing re-configurations, moisture barrier installations, and electrical upgrades to ensure lasting beauty and performance.
Custom Basement Remodeling
Transform unused lower-level square footage into functional, high-value living space. We engineer basement conversions complete with proper subfloor moisture mitigation, egress windows, soundproofing, and custom lighting. Popular basement projects include home theaters, custom wine cellars, exercise studios, wet bars, and private guest quarters.
Living in Place Remodeling & Universal Design
Maintaining independence and comfort in a familiar home is a priority for many homeowners. G.M. Roth is a leader in universal design and living-in-place modifications, often referred to as aging-in-place remodeling. Our certified specialists create barrier-free, safe environments that look like luxury architectural features rather than clinical additions.
Universal design principles make a home easier and safer to navigate for occupants of all ages and mobility levels without compromising refined interior aesthetics.
- Curbless Walk-In Showers
- Single-Floor Living Reconfigurations
- Wide Hallways & Doorways
- Residential Elevator Installation
- Custom Accessible Kitchens
3D Architectural Modeling & Virtual Walkthroughs
Visualizing a new floor plan on a two-dimensional blueprint can be challenging. Through our advanced 3D architectural modeling software, you can take a virtual walk-through of your redesigned space before construction starts.
The 6-Step Design-Build Advantage
A successful luxury home renovation depends on precise planning long before a sledgehammer touches a wall. Unlike standard contractors who figure out details as they go, our structured 6-step process ensures clear milestones, fixed pricing, and professional execution.
- Complementary Needs Assessment ConsultationWe meet at your home to evaluate your space, discuss your functional needs, take precise measurements, and understand why you want to remodel.
- Preliminary Design DevelopmentAn introductory meeting at our showroom to explore initial design concepts, establish a realistic budget range, share key questions to vet any contractor, and review the design retainer.
- Design Retainer & Material SelectionsWith a design agreement in place, our NKBA designers guide you through selecting cabinetry, countertops, fixtures, tile, and flooring.
- Pre-Production PreparationBehind-the-scenes coordination to prepare your project for construction, including finalizing architectural plans, securing municipal permits, ordering materials, and conducting alignment meetings with the production team.
- Project ProductionThe active construction phase where our team brings your project to life on-site, managing the day-to-day build to ensure quality craftsmanship and steady progress.
- Project CompletionThe final delivery of your space, covering thorough quality control walkthroughs, municipal permit sign-offs and inspections, and a comprehensive closeout meeting with you.
A Team That Respects Your Home During Construction
Living in a home during a major remodel requires absolute respect from your construction crew. We maintain rigorous jobsite standards on every build:
- Heavy-duty floor protection installed along all worker foot-traffic paths.
- Active dust containment barriers to protect clean living quarters.
- Daily end-of-day sweeping and jobsite cleanup.
- Vetted, professional tradespeople.
Our Work
Our projects reflect decades of custom design-build excellence across Southern New Hampshire and Northeastern Massachusetts.
Serving Southern New Hampshire & Northern Massachusetts
G.M. Roth proudly serves discerning homeowners across Southern New Hampshire and Northeastern Massachusetts. Our local expertise includes navigating municipal building codes, historical district guidelines, and regional climate considerations across:
New Hampshire
Nashua, Hollis, Bedford, Amherst, Windham, Merrimack, Hudson, Milford, Londonderry, and surrounding communities.
Massachusetts
Groton, Boxford, North Andover, Dunstable, Pepperell, Tyngsboro, Westford, Chelmsford, North Reading, Georgetown, Winchester and surrounding areas.
Frequently Asked Questions About High-End Home Remodeling
What makes G.M. Roth different from traditional luxury home renovation contractors?
Traditional general contractors often require you to hire an independent architect or interior designer first, leaving you to manage communication gaps between design and construction. As a design-build firm, G.M. Roth houses architectural designers, certified NKBA kitchen and bath specialists, and production supervisors under one roof. This unified team handles your project from initial concept through final construction, eliminating price surprises and miscommunications.
How much does a luxury home remodeling project typically cost in New Hampshire?
Project costs depend on the scope of work, structural modifications, and material selections. Minor bathroom remodels typically range from $25,000 to $80,000, while custom kitchen remodeling generally falls between $50,000 and $120,000+. Major room additions and whole-home reconfigurations typically start at $100,000 and can exceed $500,000+ for large multi-story builds. We provide detailed, itemized fixed-price proposals following our design phase so you know exact costs before construction begins.
What is the difference between a standalone ADU and an attached family suite?
An Accessory Dwelling Unit (ADU) is a fully independent residential unit located on the same lot as a single-family home, equipped with its own kitchen, bathroom, sleeping area, and external entrance. An attached family suite (or secondary suite) is integrated directly within the main home’s footprint or an addition, often sharing main utility lines while offering private living quarters. Zoning laws vary by town in NH and MA, and our team helps determine the ideal option for your property.
How do you incorporate aging in place features without making my home look medical?
We believe universal design should enhance your home’s beauty. Features like curbless walk-in showers, linear drains, floating vanities set at ergonomic heights, wider doorways, and decorative support bars blend into high-end tilework and millwork. The result is a luxurious, modern bathroom or suite that accommodates evolving mobility without resembling a healthcare facility.
How long does a typical design-build remodeling project take from start to finish?
Every project moves at its own pace depending on scope. Most projects begin with a thoughtful 6- to 12-week planning phase during which we finalize selections, coordinate permits, and order your finishes. Once on-site, single-room spaces like kitchens and baths typically take 4 to 8 weeks of active construction, while larger additions or whole-home transformations take a bit longer based on the size of the footprint.
Can I see materials and design options in person before starting my project?
Yes. We invite clients to visit our 6,000-square-foot interactive showroom in Nashua, NH. You can explore fully assembled kitchen and bathroom displays, test cabinet hardware and soft-close mechanisms, compare countertop slabs, examine tile options, and view 3D virtual renderings of your home design alongside our certified designers.
Ready to Transform the Home You Love?
You don’t have to move to get the space, functionality, and luxury finishes your family deserves. Partner with New Hampshire’s premier design-remodel contractor to experience a clear, structured remodeling journey backed by 40+ years of craft excellence serving homeowners since 1986.
