Top-Rated General Contractor & Structural Renovations in Cornwall, ON
At RockSolid Demolition & Renovations, we are the leading choice for high-impact home transformations and deep interior remodeling along the upper St. Lawrence River corridor. We specialize in complex residential demolition, load-bearing wall removals, and custom structural home extensions.
Unlike standard cosmetic remodelers who piece out their work to unpredictable sub-trades, we manage every single stage of your build completely in-house. From the very first swing of the sledgehammer during structural gutting to the final layout execution, you work with one single, dedicated, fully insured crew. We bring transparent communication, fixed-pricing integrity, and rock-solid execution to every job site.
Communities We Service Across the SD&G Region:
Our trucks run the Highway 401 and Highway 2 corridors daily, bringing premium structural remodeling and precision interior finishing straight to your neighborhood, including:
Cornwall (Core City, Pitt Street Corridor, & Riverfront Neighborhoods)
Long Sault & Ingleside (South Stormont)
Lancaster & Alexandria (Glengarry County)
Morrisburg & Iroquois (South Dundas)
Engineered Open-Concept Layouts & Load-Bearing Wall Removals
Many traditional homes throughout Cornwall and the United Counties of SD&G feature tight, compartmentalized floor plans. Achieving a modern, airy space requires specialized structural intervention.
Our experienced crews safely manage the entire load-bearing wall removal process: executing meticulous temporary structural shoring, completing clean interior demolition, and installing heavy engineered wood headers or structural steel I-beams. We ensure your open-concept kitchen or living room transition is flawlessly executed without compromising your home's structural footprint.
Seamless Home Additions Built to Ontario Building Code
When you need more square footage but want to preserve your local roots, a custom structural extension is the ultimate solution. From initial site assessments to final insulation and drywall, we execute foundation-to-roof expansions.
We collaborate seamlessly with local draftsmen, structural engineers, and the City of Cornwall Building Permits Department to ensure all plans are approved smoothly, inspections pass without delays, and your build is 100% compliant with the Ontario Building Code.
Don't gamble your home's safety with a standard cosmetic handyman. Discover how we maximize tight residential spaces by reading our comprehensive guide: Small Bathroom, Big Impact: Smart Renovation Ideas for Ottawa Homes, or explore our premier Kitchen Remodeling showcase.
Click here to schedule your structural renovation consultation in Cornwall and the SD&G area today!
Frequently Asked Questions: Cornwall Structural Renovations
Q: Do you handle historic home renovations and structural upgrades in Cornwall?A: Yes, all the time. The Cornwall and SD&G region features a wide mix of historic riverfront brick properties, post-war bungalows, and expansive rural homes that require specialized structural knowledge. At RockSolid Demolition & Renovations, we specialize in updating these older layouts safely. Whether you are opening up a compartmentalized floor plan in the Downtown / Pitt Street district, executing a gut-renovation in Le Village, or updating a mid-century layout in Riverview Heights, we handle everything from reinforcing sagging joists to installing heavy engineered wood headers or structural steel I-beams.
Q: What surrounding communities near Cornwall do you service?A: We don’t just stay in the city center. From our regional coverage grid, we proudly serve the entire City of Cornwall, including Eamer's Corners and local waterfront subdivisions. Our trucks travel daily across the United Counties of Stormont, Dundas, and Glengarry (SD&G), bringing premium structural contracting straight to nearby communities like Long Sault, Ingleside, Lancaster, Alexandria, and Morrisburg.
Q: Do you manage the building and demolition permit process in Cornwall?A: Yes, we take care of the entire permitting and engineering process for you from start to finish. For structural renovations, load-bearing wall removals, or home additions, the City of Cornwall Building Permits Department (and the surrounding SD&G township offices) requires formal, engineered approval. We submit all structural blueprints, architectural plans, and temporary shoring drawings directly through the region's official digital Cloudpermit portal. We coordinate one-on-one with local building inspectors to ensure your residential remodel passes inspections and is 100% compliant with the Ontario Building Code.
Q: How much does a renovation cost in Cornwall? A: Because premium home renovations are heavily customized to your property’s unique layout and structural engineering requirements, costs vary depending on the scope of work. In 2026, a mid-to-high-end small bathroom layout change or a custom walk-in tile shower conversion typically ranges from $15,000 to $30,000+. Full-scale kitchen structural remodels involving custom cabinetry, stone countertops, and mechanical rough-ins generally range from $35,000 to $75,000+. If your dream open-concept layout requires a complex load-bearing wall removal, temporary shoring, and an engineered structural steel or LVL beam installation, expect a dedicated structural budget allocation of $6,000 to $18,000+ depending on the span and point loads. We provide fully transparent, fixed-price contracts so you never have to worry about surprise change orders halfway through construction.
Q: Do you provide free estimates? A: We provide comprehensive, complimentary initial consultations for serious property owners looking to invest in high-end structural conversions, basement completions, or major layout overhauls throughout Cornwall and the SD&G region. Because we are an engineering and design-build firm rather than a basic handyman outfit, we don't just guess a number over the phone. Our team performs a rigorous, on-site structural diagnostic evaluation of your load paths, existing foundation framing, and mechanical utilities. This allows us to provide an incredibly precise, line-item budget estimate that guarantees structural accuracy and fixed material costs before any sledgehammer hits a wall.
Q: Are you fully licensed and insured? A: Absolutely. At RockSolid Demolition & Renovations, your home's structural safety and financial equity are completely protected. We carry comprehensive commercial general liability insurance coverage, and our entire in-house site crew is fully protected by the Workplace Safety and Insurance Board (WSIB). Furthermore, we ensure all specialized mechanical trades—including licensed plumbing re-routing and rough-in electrical work—are executed strictly by certified pros holding valid Ontario College of Trades credentials. We work hand-in-hand with municipal inspectors via the Cloudpermit portal to ensure your final build is completely legal, heavily insured, and 100% compliant with the Ontario Building Code.
Complete Structural & Interior Renovation Capabilities
Our crews are fully equipped, licensed, and insured to manage complex structural modifications, emergency restoration rebuilds, and premium interior builds. We frequently execute the following high-ticket residential projects throughout Cornwall and the surrounding St. Lawrence River and SD&G corridors:
Engineered Load-Bearing Wall Removals: Safe execution of partition wall demolitions, temporary structural shoring, and precision installation of structural steel I-beams or heavy LVL headers. We clear away interior layout constraints to build completely open-concept kitchens and spacious living areas.
Luxury Bathroom & Ensuite Transformations: Turnkey custom walk-in tile shower conversions, advanced Schluter-system waterproofing, premium vanity installations, and modern spatial reconfigurations designed to maximize tight or awkward bathroom layouts.
Full-Scale Interior Demolition & Gut-Jobs: Meticulous, clean interior gutting straight down to the bare structural studs. We specialize in the safe extraction of outdated framing, plaster, and lath common in historic Cornwall, Riverview Heights, and Glengarry County properties.
Custom Home Additions & Multi-Generational Suites: Complete foundation-to-roof structural expansions, master bedroom extensions, and accessory secondary suites. Every structural addition is executed under a transparent, fixed-price framework and built strictly to the Ontario Building Code.
Finished Basements & Structural Restoration: Complete basement build-outs, custom framing, subfloor systems, layout optimization, and modern insulation upgrades. We specialize in converting damp basements into premium, dry living spaces, utilizing advanced foundation repair and waterproofing techniques to ensure long-term value.