Detached Garage – Welland | Custom Accessory Structure Design
Residential — Welland, Ontario
Your home or cottage should be a reflection of your vision, personality, and lifestyle. At De Simone Designs, we specialize in custom architectural solutions that blend aesthetic appeal with functional design. From conceptual planning to permit-ready plans, we handle each detail with precision, creating spaces that inspire and endure.
Personalized design guidance to shape your vision into a clear and achievable plan.
Creative architectural concepts that define the look, feel, and functionality of your home or cottage.
Strategic planning that aligns your design with site conditions, zoning, and overall property potential.
Comprehensive architectural drawings prepared for approvals and a smooth path to construction.
Your vision is at the heart of everything we do. We take the time to understand your needs, preferences, and goals, ensuring that the final design reflects your unique story.
We prioritize quality and creativity, crafting spaces that are both functional and inspiring. Every project balances innovation with timeless design principles.
Adhering to the Ontario Building Code (OBC) is non-negotiable. Our work meets and exceeds regulatory standards to ensure safety, efficiency, and lasting val.
Registered Architectural Technologist with Association Architectural Technologists of Ontario
Fully Insured and BCIN Certified by the Ontario Ministry of Municipal Housing & Affairs
Gold Winner of the CommunityVotes Niagara Region 2026
At De Simone Designs, we transform ideas into spaces that inspire. Specializing in custom homes, cottages, multi-unit residences, and commercial design, our services are built on client-centered values, design precision, and a commitment to quality. From initial planning to permit-ready plans, we handle every detail, making your vision a reality.
Every project begins with a one-on-one consultation to understand your unique goals, style, and requirements. We’ll discuss your vision, budget, and timeline to ensure a clear plan from the start. This personalized approach sets the foundation for a smooth, enjoyable design process.
Our team transforms your ideas into initial concepts, with preliminary designs that explore layout, structure, and flow. We consider every aspect of the design, including energy efficiency, material selection, and aesthetic elements that reflect your style.
We collaborate with an extensive network of professionals—including engineers, planners, architects, interior designers, and contractors—to bring your project to life. Our coordination with municipal departments ensures all plans meet local regulations and Ontario Building Code (OBC) requirements.
Whether it’s a rural cottage site or an urban lot, we guide you through zoning reviews, minor variances, rezoning, and severances as needed. Our expertise in lot planning helps maximize the use and value of your property, providing insights into setbacks, landscape integration, and views.
At De Simone Designs, we specialize in a variety of architectural services, including custom home design, multi-unit dwellings, renovations, additions, and commercial design. We also provide consulting on zoning, variances, and permit processes, ensuring your project complies with all local regulations.
The first step is to schedule a consultation with us, where we’ll discuss your vision, budget, and any specific requirements. From there, we’ll help guide you through the design process, including conceptual planning, drafting designs, and obtaining permits. Our team works closely with engineers, contractors, and municipal departments to ensure a smooth process.
Yes, we handle all aspects of the permit and zoning process. Our team is experienced in managing zoning reviews, variances, rezoning, and other municipal requirements, making sure your project adheres to all local regulations and guidelines.
Absolutely! We collaborate closely with contractors to ensure that your design is implemented to the highest standard. Our team works seamlessly with your chosen contractor to ensure your vision is realized within your budget and timeline.
We worked with Thomas for our custom cottage project. His creativity, thought-out plans and dedication to creating a great design truly exceeded our expectations. From the initial consultation to the final result, Thomas was professional, knowledgeable, and truly passionate about his work. He listened to our ideas and brought them to life. If you are looking for an architectural design firm that will go above and beyond to create your dream space, look no further than De Simone Designs. Thank you for making my dream summer cottage a reality!
C & J Keast – Crystal Beach, ON
We used De Simone Designs for a rear addition project to our existing home. We were very happy with the great design, but even happier that they also kept us within our budget. Thomas worked out all the tricky construction details, which was a huge relief for first time renovators navigating the world of construction. His attention to detail and ability to balance aesthetics with practicality was truly impressive. What stood out the most to me was his willingness to guide us throughout the entire process. As someone who is not well-versed in architectural design or construction, I appreciated his expertise and his ability to explain things in a way that was easy to understand. He truly made the entire experience stress-free and enjoyable. I highly recommend this firm to anyone in need of an architectural designer.
F & P Roveda
It was a pleasure working with Thomas at De Simone Designs. We appreciated his fun approach to construction and design, as well as all the energy and work he put in to our detached garage project. The added space for my wife’s art studio on the second floor was amazing touch we hadn’t initially thought of. We were very pleased with this professionalism and the quality of his work. He presented different design options and took the time to review different colour options for the exterior. His professionalism, creativity, and commitment to his clients is truly unmatched.
M & J Quevedo – Niagara Falls, ON
I contacted Thomas for the plans for a renovation of my basement to add a new secondary apartment; I couldn’t have been happier with the results. His expertise in building and city codes was evident throughout the entire process, ensuring that all aspects of the design were up to standard. I was impressed by his office’s detailed drawings, which were not only aesthetically pleasing but also had a practical and functional layout. Thomas’ friendly and fun demeanor helped make this an enjoyable process. I will always recommend him.
D Pitt – Hamilton, ON
Residential — Welland, Ontario
Residential — Niagara on the Lake, Ontario
Residential — Welland, Ontario
Not sure which service is right for your project? Our team is here to help. Get in touch and we’ll walk you through your options and next steps with clarity and confidence.
