Simpson Architecture

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Simpson Architecture

Residential Architectural Design, Consulting + Permits in Southern Ontario

Services We Offer

From concept to permits, we deliver complete architectural solutions that bring your vision to life.

Residential Design

Custom Homes & Additions

Unique, functional designs for custom homes, additions, and renovations tailored to your lifestyle and budget.

Permit Process

Start to Approval

We handle zoning reviews, municipal applications, and all documentation to secure your permits without delays.

Structural Consulting

On-Site Expertise

Expert structural advice and inspections from a former building inspector to solve on-site construction challenges.

3D Renderings

Visualize Your Project

Photo-realistic renderings help you see exactly what your project will look like before construction begins.

Secondary Suites

Legal Basement Apartments

Full design and approval process for legal secondary suites that comply with Ontario Building Code.

HVAC Coordination

System Design Integration

We coordinate HVAC design to ensure your heating, cooling, and ventilation meet code and project requirements.

Engineering Coordination

Structural & Technical

We work with trusted engineers to provide cost-effective, code-compliant structural and technical solutions.

Septic Coordination

Design & Approvals

Full septic system design and permit coordination for rural and off-grid properties.

@simpson.architecture
Simpson Architecture

@simpson.architecture

🌉 Residential Architectural Drawings 🏠Building Permits 🏗Structural Consulting 🇨🇦 Servicing York and Durham Region 🏙 EST. March 2023
  • Construction is moving quickly on our project along Hwy. 48. The walls are now going up and the framing is looking great so far. It’s always exciting to see a project move from drawings to reality, and this one is progressing fast. Stay tuned as construction continues! #simpsonarchitecture #residentialdesign #homeaddition #ontarioconstruction #architectureincanada
  • What a beautiful morning for a site visit. @go_iguide makes documenting existing conditions seamless. In less than an hour, we can scan the entire home and capture every detail needed for precise architectural drawings. We are adding a secind storey to the right side of the house, redoing the kitchen and making the house more open concept. Excited to bring this vision to life. Stay tuned as we move from scan to drawings. #simpsonarchitecture #ontarioarchitecture #architectureincanada #architecturaldrawings #newkitchen
  • Starting to ramp up on our new project in Georgina. This project is getting a rear addition with a new kitchen, a layout design on the main floor and a new basement with underpinning. Super excited to get started on this one. Stay tuned!
  • One of our addition projects on Highway 48 is officially underway! The homeowners received their permits just over a week ago and have been making incredible progress. ✔️ Demolition completed within two days ✔️ Footings scheduled to be poured in the coming days We love seeing our clients move forward with confidence and momentum. Stay tuned as this project continues to take shape! #simpsonarchitecture #projectupdate #buildingpermit #buildingaddition #constructionprogress
  • We had an amazing site visit last night in Stouffville. What a beautiful house inside and out with so much character. Home owner wants to rebuild the left side of the house with an added second storey addition. There's also a load bearing wall removal on the main floor with a kitchen redesign. We're very excited to get started with this project. Again, snowy weather doesn't seem to do a lot of these houses justice.
  • Our first site visit of the year. We will be working with @lakeside_meadows_contracting on a finished basement for this project in Georgina. Older photo of the project, this is the weather we are all dreaming about!
  • We're excited to announce we have renewed our membership with @georginachamber. We are big fans of what they are accomplishing and the group they have over there. We always support local when we can! #supportlocalbusinesses #madeincanada #supportcanadianbusiness
  • 🎉 Happy New Year & Happy 2026! 🎉 We’re excited to kick off 2026 with a few new updates at Simpson Architecture. This year, we’ll be rolling out a series of educational videos designed to help homeowners better understand the construction process beyond our direct service scope. As always, January is a busy one—submitting permits for projects from last year, wrapping up final details, and working through revisions to get everything ready for the months ahead. We’re also excited to share that we’ve ordered new branded merch from @leatherwood_tp out of Manitoba. Our team will now be wearing Simpson Architecture gear during site visits, and we’re proud to support Canadian small businesses whenever we can. 🇨🇦 2026 is going to be an outstanding year for us! We hope everyone has a great year ahead!
  • From our family to yours, have a very happy (and safe) holiday season.
View on Instagram
Construction is moving quickly on our project along Hwy. 48. The walls are now going up and the framing is looking great so far. It’s always exciting to see a project move from drawings to reality, and this one is progressing fast. Stay tuned as construction continues! #simpsonarchitecture #residentialdesign #homeaddition #ontarioconstruction #architectureincanada
Construction is moving quickly on our project along Hwy. 48. The walls are now going up and the framing is looking great so far. It’s always exciting to see a project move from drawings to reality, and this one is progressing fast. Stay tuned as construction continues! #simpsonarchitecture #residentialdesign #homeaddition #ontarioconstruction #architectureincanada
@simpson.architecture
@simpson.architecture
•
Follow
Construction is moving quickly on our project along Hwy. 48. The walls are now going up and the framing is looking great so far. It’s always exciting to see a project move from drawings to reality, and this one is progressing fast. Stay tuned as construction continues! #simpsonarchitecture #residentialdesign #homeaddition #ontarioconstruction #architectureincanada
1 week ago
View on Instagram |
1/9
@simpson.architecture
@simpson.architecture
•
Follow
What a beautiful morning for a site visit. @go_iguide makes documenting existing conditions seamless. In less than an hour, we can scan the entire home and capture every detail needed for precise architectural drawings. We are adding a secind storey to the right side of the house, redoing the kitchen and making the house more open concept. Excited to bring this vision to life. Stay tuned as we move from scan to drawings. #simpsonarchitecture #ontarioarchitecture #architectureincanada #architecturaldrawings #newkitchen
2 weeks ago
View on Instagram |
2/9
Starting to ramp up on our new project in Georgina. This project is getting a rear addition with a new kitchen, a layout design on the main floor and a new basement with underpinning. Super excited to get started on this one. Stay tuned!
@simpson.architecture
@simpson.architecture
•
Follow
Starting to ramp up on our new project in Georgina. This project is getting a rear addition with a new kitchen, a layout design on the main floor and a new basement with underpinning. Super excited to get started on this one. Stay tuned!
3 weeks ago
View on Instagram |
3/9
One of our addition projects on Highway 48 is officially underway! The homeowners received their permits just over a week ago and have been making incredible progress. ✔️ Demolition completed within two days ✔️ Footings scheduled to be poured in the coming days We love seeing our clients move forward with confidence and momentum. Stay tuned as this project continues to take shape! #simpsonarchitecture #projectupdate #buildingpermit #buildingaddition #constructionprogress
One of our addition projects on Highway 48 is officially underway! The homeowners received their permits just over a week ago and have been making incredible progress. ✔️ Demolition completed within two days ✔️ Footings scheduled to be poured in the coming days We love seeing our clients move forward with confidence and momentum. Stay tuned as this project continues to take shape! #simpsonarchitecture #projectupdate #buildingpermit #buildingaddition #constructionprogress
One of our addition projects on Highway 48 is officially underway! The homeowners received their permits just over a week ago and have been making incredible progress. ✔️ Demolition completed within two days ✔️ Footings scheduled to be poured in the coming days We love seeing our clients move forward with confidence and momentum. Stay tuned as this project continues to take shape! #simpsonarchitecture #projectupdate #buildingpermit #buildingaddition #constructionprogress
One of our addition projects on Highway 48 is officially underway! The homeowners received their permits just over a week ago and have been making incredible progress. ✔️ Demolition completed within two days ✔️ Footings scheduled to be poured in the coming days We love seeing our clients move forward with confidence and momentum. Stay tuned as this project continues to take shape! #simpsonarchitecture #projectupdate #buildingpermit #buildingaddition #constructionprogress
One of our addition projects on Highway 48 is officially underway! The homeowners received their permits just over a week ago and have been making incredible progress. ✔️ Demolition completed within two days ✔️ Footings scheduled to be poured in the coming days We love seeing our clients move forward with confidence and momentum. Stay tuned as this project continues to take shape! #simpsonarchitecture #projectupdate #buildingpermit #buildingaddition #constructionprogress
One of our addition projects on Highway 48 is officially underway! The homeowners received their permits just over a week ago and have been making incredible progress. ✔️ Demolition completed within two days ✔️ Footings scheduled to be poured in the coming days We love seeing our clients move forward with confidence and momentum. Stay tuned as this project continues to take shape! #simpsonarchitecture #projectupdate #buildingpermit #buildingaddition #constructionprogress
One of our addition projects on Highway 48 is officially underway! The homeowners received their permits just over a week ago and have been making incredible progress. ✔️ Demolition completed within two days ✔️ Footings scheduled to be poured in the coming days We love seeing our clients move forward with confidence and momentum. Stay tuned as this project continues to take shape! #simpsonarchitecture #projectupdate #buildingpermit #buildingaddition #constructionprogress
One of our addition projects on Highway 48 is officially underway! The homeowners received their permits just over a week ago and have been making incredible progress. ✔️ Demolition completed within two days ✔️ Footings scheduled to be poured in the coming days We love seeing our clients move forward with confidence and momentum. Stay tuned as this project continues to take shape! #simpsonarchitecture #projectupdate #buildingpermit #buildingaddition #constructionprogress
@simpson.architecture
@simpson.architecture
•
Follow
One of our addition projects on Highway 48 is officially underway! The homeowners received their permits just over a week ago and have been making incredible progress. ✔️ Demolition completed within two days ✔️ Footings scheduled to be poured in the coming days We love seeing our clients move forward with confidence and momentum. Stay tuned as this project continues to take shape! #simpsonarchitecture #projectupdate #buildingpermit #buildingaddition #constructionprogress
1 month ago
View on Instagram |
4/9
We had an amazing site visit last night in Stouffville. What a beautiful house inside and out with so much character. Home owner wants to rebuild the left side of the house with an added second storey addition. There's also a load bearing wall removal on the main floor with a kitchen redesign. We're very excited to get started with this project. Again, snowy weather doesn't seem to do a lot of these houses justice.
We had an amazing site visit last night in Stouffville. What a beautiful house inside and out with so much character. Home owner wants to rebuild the left side of the house with an added second storey addition. There's also a load bearing wall removal on the main floor with a kitchen redesign. We're very excited to get started with this project. Again, snowy weather doesn't seem to do a lot of these houses justice.
@simpson.architecture
@simpson.architecture
•
Follow
We had an amazing site visit last night in Stouffville. What a beautiful house inside and out with so much character. Home owner wants to rebuild the left side of the house with an added second storey addition. There's also a load bearing wall removal on the main floor with a kitchen redesign. We're very excited to get started with this project. Again, snowy weather doesn't seem to do a lot of these houses justice.
1 month ago
View on Instagram |
5/9
Our first site visit of the year. We will be working with @lakeside_meadows_contracting on a finished basement for this project in Georgina. Older photo of the project, this is the weather we are all dreaming about!
@simpson.architecture
@simpson.architecture
•
Follow
Our first site visit of the year. We will be working with @lakeside_meadows_contracting on a finished basement for this project in Georgina. Older photo of the project, this is the weather we are all dreaming about!
2 months ago
View on Instagram |
6/9
We're excited to announce we have renewed our membership with @georginachamber. We are big fans of what they are accomplishing and the group they have over there. We always support local when we can! #supportlocalbusinesses #madeincanada #supportcanadianbusiness
@simpson.architecture
@simpson.architecture
•
Follow
We're excited to announce we have renewed our membership with @georginachamber. We are big fans of what they are accomplishing and the group they have over there. We always support local when we can! #supportlocalbusinesses #madeincanada #supportcanadianbusiness
2 months ago
View on Instagram |
7/9
🎉 Happy New Year & Happy 2026! 🎉 We’re excited to kick off 2026 with a few new updates at Simpson Architecture. This year, we’ll be rolling out a series of educational videos designed to help homeowners better understand the construction process beyond our direct service scope. As always, January is a busy one—submitting permits for projects from last year, wrapping up final details, and working through revisions to get everything ready for the months ahead. We’re also excited to share that we’ve ordered new branded merch from @leatherwood_tp out of Manitoba. Our team will now be wearing Simpson Architecture gear during site visits, and we’re proud to support Canadian small businesses whenever we can. 🇨🇦 2026 is going to be an outstanding year for us! We hope everyone has a great year ahead!
@simpson.architecture
@simpson.architecture
•
Follow
🎉 Happy New Year & Happy 2026! 🎉 We’re excited to kick off 2026 with a few new updates at Simpson Architecture. This year, we’ll be rolling out a series of educational videos designed to help homeowners better understand the construction process beyond our direct service scope. As always, January is a busy one—submitting permits for projects from last year, wrapping up final details, and working through revisions to get everything ready for the months ahead. We’re also excited to share that we’ve ordered new branded merch from @leatherwood_tp out of Manitoba. Our team will now be wearing Simpson Architecture gear during site visits, and we’re proud to support Canadian small businesses whenever we can. 🇨🇦 2026 is going to be an outstanding year for us! We hope everyone has a great year ahead!
2 months ago
View on Instagram |
8/9
From our family to yours, have a very happy (and safe) holiday season.
@simpson.architecture
@simpson.architecture
•
Follow
From our family to yours, have a very happy (and safe) holiday season.
3 months ago
View on Instagram |
9/9

WE LOVE NEW
IDEAS

Are you new to architectural design or exploring the possibilities for your dream project? Haven’t worked with an architect before? No worries! At Simpson Architecture, we pride ourselves on making the process approachable and enjoyable for everyone, regardless of experience.

Our team of skilled and friendly professionals is here to guide you through every step of the journey, from initial concepts to final construction. Whether you’re starting from scratch or revisiting a long-held vision, we’re committed to turning your ideas into reality.

Learn More

Working With The Best

Our Partners

Architectural Glazing Canada Inc. https://www.architecturalglazing.ca/
Royal LePage
A+ Plus Tree Services. Kawartha Lakes. https://www.facebook.com/aplustreeserviceinc/
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