Comprehensive Architectural & Permit Services
Architectural Drawings, Custom Design & Building Permits
Bring your structural vision to reality with end-to-end architectural design, custom drafting, and building permit acquisition from Proventa Construction. Whether you are planning a high-end custom home build, a multi-story property addition, or a legal secondary suite conversion, our design team produces precise, code-compliant blueprints and technical documentation engineered to accelerate municipal approvals and set the stage for a seamless build.
Custom Architectural & Spatial Planning
Transform concepts into functional layouts tailored to your lifestyle. We craft custom home floor plans, property addition layouts, and high-definition 3D spatial concepts that help you visualize every room flow and facade before construction starts.
Technical Drawings & Construction Drafting
Detailed blueprints ensure seamless coordination on site. Our technical packages include precise floor plans, property site orientation, detailed exterior elevations, structural cross-sections, and framing specifications engineered for city plan examiners and contractors.
Secondary Unit & Basement Conversion Plans
Maximize property utility and rental value with legal basement suites and secondary units. We draft specialized layouts that strictly fulfill Ontario Building Code requirements for fire separations, egress window sizing, minimum ceiling heights, and independent entrances.
Municipal Permits & Zoning Approvals
Eliminate municipal delays with complete submission management. We evaluate local zoning bylaws, conduct property setback reviews, submit application packages to local building departments, and coordinate required structural and mechanical engineering stamps.
Our Core Architectural & Drafting Capabilities
A full spectrum of architectural design and permit management services tailored across residential and commercial developments.
Custom Residential Home Blueprints
Complete architectural drawing packages engineered from scratch for modern custom single-family homes, infill builds, and luxury estates.
Home Extensions & Vertical Overbuilds
Structural additions and second-story expansion plans engineered to respect municipal lot coverage limits and setback boundaries.
Secondary Suite & ARU Permit Plans
Detailed layouts and site plans for legal basement apartments, detached garden suites, and Additional Residential Units (ARUs).
Structural Wall Removal & Renovations
Open-concept interior redesigns complete with load-bearing wall evaluations, steel beam placement, and structural engineer stamps.
Zoning Bylaw Reviews & Minor Variances
Thorough evaluation of local height restrictions, setbacks, and lot coverage, along with representation for municipal variance approvals.
Commercial Interior Fit-Out Drawings
Code-compliant architectural layouts and change-of-use permit drawings for retail locations, offices, and commercial facilities.
Why Start Your Building Project with Proventa?
Frequently Asked Questions: Building Permits & Design
Essential answers regarding architectural planning, blueprint requirements, and municipal approvals.
Why do I need professional architectural drawings for my project?
Professional architectural drawings serve two critical functions: they provide municipal building departments with technical proof that your construction complies with structural and fire safety codes, and they provide your contractor with accurate measurements and specifications needed to build accurately without costly errors.
What projects require a mandatory building permit?
A building permit is typically required for any project that alters structural framing, modifies load-bearing walls, adds square footage to a building, constructs an independent secondary apartment, changes plumbing/HVAC layouts, or builds large exterior structures like attached garages or elevated decks.
How long does it take to prepare permit drawings and get city approval?
Drafting complete architectural plans generally takes 2 to 4 weeks depending on client revisions and project scope. Once submitted to the municipal building department, standard residential reviews usually take between 10 to 20 business days, assuming no minor variances are required.
What is the difference between a Zoning Review and a Building Permit?
A Zoning Review determines whether your project complies with municipal land-use laws (such as building height, lot coverage, and property setbacks). A Building Permit review assesses whether your structural design, materials, fire safety, and plumbing comply with health and safety provisions in the Building Code.
Get a FREE Quote
No cost · No obligation · Response in 24 hours
Verified Customer Reviews
Proventa Construction transformed our unfinished basement in Oakville into a comfortable, modern living space. The… recessed lighting brightens the rooms, and the flooring, drywall and painting give everything a clean, finished look. We especially appreciate how well the layout works for our family. Very happy with our basement renovation.
We had a great experience with Proventa Construction for our basement finishing project. They helped us make better use… of the space with a welcoming recreation area, practical storage and modern lighting. The neat trim, smooth walls and attention to the smaller details made a big difference. Our basement finally feels like part of our home.
Proventa Construction Inc. transformed our outdated 1990s kitchen into a stunning open-concept dream space. They… removed a load-bearing wall, installed custom cabinetry, and fitted gorgeous quartz countertops. The project leadership was top-notch—they kept everything clean, organised, and strictly on schedule. The attention to detail on the tile backsplash and lighting upgrades made a huge difference. Highly recommended for any major kitchen remodel!
Really happy with how our basement turned out. Proventa Construction did a fantastic job transforming it into a… beautiful, fully finished legal basement with a modern island kitchen, stylish cabinets, and elegant countertops. The whole space looks amazing and feels like a separate home. Highly recommend Proventa Construction for legal basement renovations and home remodeling in the GTA!
We hired Proventa Construction to build a below-grade entrance for our basement apartment. The work included… excavation, concrete steps, retaining walls, and drainage. The team explained the process clearly and kept us updated throughout.
We recently hired Proventa Construction to renovate our kitchen, bathroom, and basement all at once. Honestly, taking… on three major spaces had us incredibly stressed, but the team made the entire process so much easier. They were straightforward with pricing, transparent about the timeline, and actually showed up when they said they would. The craftsmanship is excellent—the kitchen is beautiful and functional, the bathroom feels like a proper upgrade, and the basement went from a dusty storage zone to a bright space we actually use every day. There were a couple of minor material delays along the way, but they communicated immediately and sorted it out without dragging their feet. If you want a dependable crew in the Toronto area that does quality work and respects your home, I highly recommend them.
We recently hired Proventa Construction for a complete overhaul of both our kitchen and bathroom, and honestly, they… knocked it out of the park. From our very first meeting, the team felt more like good neighbors who genuinely cared about our house rather than just another contractor. They really listened to our vision (and our budget!) and turned what could have been a super stressful process into a really exciting project. The craftsmanship is top-tier. Our kitchen is now the ultimate gathering spot—functional, beautiful, and the custom finishes are just stunning. And the bathroom? It honestly feels like a boutique hotel spa now. What really stood out to us was their communication. They kept us in the loop every step of the way, showed up on time, and left the place spotless at the end of every work day. In true Canadian fashion, they were polite, professional, and just a real pleasure to have around. If you are looking to renovate and want a team you can actually trust to do an incredible job, look no further than Proventa. We couldn't be happier with how everything turned out. Thank you guys so much!
Proventa Construction did an excellent job finishing townhouse basement in Mississauga. The team provided honest… guidance, practical suggestions, and quality workmanship. Communication was clear throughout, and the finished basement feels comfortable and inviting. Highly recommend Proventa Construction for basement renovations in Mississauga.
We recently worked with Proventa Construction to renovate our basement, and they were incredible. They turned a dark,… unfinished space into a beautiful, bright, and comfortable extension of our home. From start to finish, the team was transparent, respectful, and genuinely cared about the quality of their work. If you're looking for trustworthy people who do amazing work, we highly recommend Proventa!
Honestly, we couldn't be happier with the job Proventa Construction did on our kitchen and basement! From day one, the… guys were super professional, completely reliable, and just all-around great people to have around the house. They turned our kitchen into an absolute dream and made the basement so cozy for the family. Their attention to detail is incredible, the pricing was totally fair with zero surprises, and they made the whole project completely stress-free. If you're looking to upgrade your place, we highly recommend them—they truly went above and beyond!
Our City-Wise Architectural & Permit Services
Proventa Construction provides comprehensive, end-to-end architectural drafting, structural design, and municipal permit clearance services across Ontario. We tailor each project to local zoning bylaws and Ontario Building Code standards to ensure seamless approvals and flawless project execution.
Explore our specialized local design and permitting solutions in your city: