Custom Home Design
New homes designed around your lot, lifestyle and budget.
Additions & Renovations
Add space or reshape the home you already have.
Cottages
Year-round and seasonal cottages suited to the waterfront or woods.
Garages & Accessory Buildings
Garages, workshops, sheds and outbuildings.
Permit Drawings (Ontario Building Code)
Complete drawing sets prepared for municipal building permits.
ICF & SIP Design
Insulated concrete form and structural insulated panel homes.
Septic Coordination
Liaising with septic designers and installers on system layout.
Zoning & Planning Review
Setbacks, lot coverage and by-law checks before you commit.
Energy-Efficient Design
Orientation, envelope and layouts that cut heating and cooling loads.
First Nations & Indigenous Housing Design
Housing design for First Nations and Indigenous communities.
Design Support During Construction
Answering builder questions and clarifying drawings on site.
Start a project
Call (613) 284-8324 or get in touch.
Caswell Custom Home Design is a design-only practice. Construction is carried out by your chosen builder or contractor.
Serving Smiths Falls, Perth, Ottawa, Kingston, Rideau Lakes, Tay Valley, Kemptville and Carleton Place.