What exterior work can I do myself?

There's quite a bit of exterior work Ottawa homeowners can tackle themselves — but the line between DIY and "call a pro" depends on complexity, safety risk, and what the Ontario Building Code requires.

Here's a practical breakdown of what's generally fair game for a capable DIYer in Ottawa.

Lower-Risk DIY Exterior Projects

Painting and caulking are the most accessible exterior tasks. Repainting siding, trim, or a front door requires no permits and can dramatically improve curb appeal. Recaulking around windows, doors, and penetrations is also a great DIY project — just make sure you're using an exterior-rated product appropriate for Ottawa's freeze-thaw cycles. Silicone or polyurethane caulks hold up far better than latex in our climate.

Landscaping and grading are also permit-free in most cases. Improving drainage away from your foundation, laying sod, planting gardens, or installing interlocking stone pathways are all reasonable DIY tasks. Just be mindful that grading should slope at least 6 inches over the first 10 feet away from your foundation — this is one of the most important things you can do to protect your basement.

Decks and fences are middle-ground projects. Many homeowners build their own, but be aware that decks over 24 inches off the ground require a City of Ottawa building permit (613-580-2424 or ottawa.ca/building). Permits for simple decks typically run $100–$300 and take 10–15 business days. If you pull the permit and build to code, you're fully within your rights to do this yourself. Fences generally don't require permits unless they exceed certain heights or are on a corner lot.

Minor roofing repairs — replacing a few shingles, resealing flashing around a vent — are manageable for a confident DIYer comfortable working at height. However, a full roof replacement is a project most homeowners should leave to professionals. The safety risk is significant, and improper installation in Ottawa's heavy snow and ice environment can lead to costly damage.

Where to Draw the Line

Anything involving gas lines, electrical panels, or structural changes is off-limits for DIY without professional involvement. In Ontario, gas work must be performed by a TSSA-certified technician, and electrical work requires an ESA permit — even if you do the work yourself, it must be inspected. Structural changes to exterior walls, adding windows, or building an addition all require permits and typically engineering sign-off.

If your home is in a heritage conservation district (the Glebe, New Edinburgh, Rockcliffe, Sandy Hill, Centretown), even exterior paint colours and materials may require approval before you start.

Next Steps

Before starting any exterior project, check whether a permit is required at ottawa.ca/building or by calling 613-580-2424. For projects where you're unsure about the structural or technical scope, getting a professional assessment first can save you from a costly mistake. Browse verified local contractors in our Ottawa contractor directory if you need a second opinion or want to hand off the more complex portions of a project.