A finished basement can become a family room, a bedroom, an office or a separate suite without adding anything to the footprint of the house. Done well, it is some of the most useful space you own. Done badly, it is a cold, damp room that has to be torn out in a few years. This page covers what matters most on a basement renovation in Ottawa and what to ask before you hire anyone.
Start with the water
Ottawa’s freeze and thaw cycles, spring melt and high water tables put real stress on foundations. Before anything gets built, the basement should be checked for signs of moisture: white mineral deposits on the concrete, a musty smell, stained or peeling paint low on the walls, and cracks that weep after rain. Grading around the house, downspouts and eavestroughs, window wells and any sump pump all matter. Finishing over an active leak just hides the problem until it turns into mould, so a water problem should be fixed first and the finishing work should wait.
Insulation, framing and flooring work together
Concrete walls and floors are cold, and warm indoor air that reaches them can condense. How the walls are insulated and air sealed is what keeps a basement comfortable and dry, which makes the wall assembly more important than the paint colour. Framing, insulation, vapour control and flooring should be chosen to work together, and flooring over a slab should tolerate a little moisture rather than depend on a perfectly dry floor.
Permits and code
In Ottawa, finishing a basement often needs a building permit, especially when the work adds or changes plumbing or electrical, creates new bedrooms or changes the structure. Bedrooms need a proper way out in an emergency, and smoke and carbon monoxide alarms are required in Ontario homes. The City of Ottawa can tell you whether your plan needs a permit. Ask any contractor, before you sign, who is pulling the permit and what inspections to expect.
More trades than most rooms
A basement can involve framing, electrical, plumbing, heating and ventilation, insulation, drywall, flooring, trim and paint. Electrical and plumbing work has to be done by qualified, licensed people and inspected. At Decked Out, qualified electricians, plumbers and engineers are brought in where a project needs them, and we manage the trades and the schedule so each one arrives when the work before it is done.
Basement suites
A second unit is a bigger job again. It has its own requirements for fire separation, exits, ceiling height, and municipal rules for secondary units. If a suite is part of your plan, say so at the start, so the design is right the first time instead of being corrected halfway through.
Questions to ask any contractor
How will you deal with moisture before you finish anything? Who is pulling the permit? Who is doing the electrical and plumbing, and are they licensed? What is in the written scope, and what is not? How are changes priced once the work is under way? What does the schedule look like, and what could move it? A good contractor will answer all of these plainly and in writing.
Ready to talk about your basement?
If you want a quick ballpark first, try the free online estimator, then request a detailed quote. If you would rather talk, call 613-868-3325 or send us a message. We reply within 24 hours, Monday to Friday. You can see recent jobs in Our Work, and there is a page on how homeowners usually finance a renovation.
You may also be interested in our kitchen and bathroom work, or the full list of services.