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Basements · Ottawa

Finish Your Basement, Gain a Floor.

An unfinished Ottawa basement is a whole floor of your home doing nothing. We finish basements into rec rooms, offices, gyms and legal secondary suites — moisture-managed from the concrete up, permits handled, done once and done right.

6-10 wksTypical project
5★Google rating
100%Permit-compliant builds
Finished basement with rec room and built-in storage in an Ottawa home
Moisture First

Basements fail from the concrete up — so we start there.

Ottawa basements fight two enemies: spring meltwater pushing against the foundation, and humid summer air condensing on cool concrete. Finish over that with the wrong assembly — fiberglass batts against bare concrete, no vapour strategy — and you are growing mould inside your walls within two years.

We build basement assemblies for this climate: moisture assessed first, rigid insulation or spray foam against concrete, inorganic flooring, and mechanical ventilation sized to the space. It costs a little more on day one and saves the entire renovation on day one-thousand.

  • Moisture assessment before any framing
  • Rigid foam or spray foam against concrete — no batts on bare walls
  • Inorganic flooring: vinyl plank or tile, never carpet on slab
  • Egress windows for bedrooms and suites
  • Permits and inspections handled for you
  • Legal secondary suite experience
What We Build

One Basement. Six New Rooms.

Rec Rooms & Family Space

Open family rooms with media walls, built-in storage and lighting plans that kill the basement feel.

Legal Secondary Suites

Full in-law and rental suites: egress, fire separation, soundproofing and separate entrances — permits managed start to finish.

Home Offices

Quiet, wired, properly lit offices with real climate control — the permanent work-from-home upgrade.

Home Gyms

Rubber flooring, mirrored walls, reinforced mounting points and ventilation sized for actual workouts.

Basement Bathrooms

Full and three-quarter baths, including sewage ejector and upflush systems where the drain line is above grade.

Wet Bars & Theatres

Bar builds, theatre rooms and games zones with sound isolation so the upstairs stays quiet.

Framing and insulation stage of an Ottawa basement finishing project
The Ottawa Basement Spec

Built for Below Grade.

These are the decisions that determine whether a finished basement still smells fresh in five years. All of them are line items on our written quotes.

  • Wall assemblyRigid foam or spray foam against concrete, framed wall inboard
  • SubfloorDimpled membrane or insulated subfloor panels
  • FlooringVinyl plank or porcelain tile — inorganic only
  • EgressCode-sized window for any bedroom, enlarged wells included
  • Fire separationType X drywall and sealed penetrations for suites
  • VentilationHRV-balanced fresh air, bathroom fans vented outside
  • PermitsBuilding permit + inspections included for suites
Our Process

From quote to enjoy — four clear steps.

01

Consult

On-site walkthrough. We measure, photograph and listen.

02

Design

Clear scope, material selection and fixed-price written quote.

03

Build

Clean, documented build with daily progress photos.

04

Warranty

Written workmanship warranty on every project.

FAQ

Basement Questions.

Straight answers before you book. Don't see yours? Call (343) 998-8316.

What does it cost to finish a basement in Ottawa?
Most Ottawa basement finishes run $40-$70 per square foot — a typical 700 sq ft basement lands between $30,000-$50,000, with legal suites higher due to egress, fire separation and separate systems. You get an itemized fixed-price quote after the on-site assessment.
Do I need a permit to finish my basement in Ottawa?
A basic rec-room finish with no new bedroom or plumbing often needs no permit. Add a bedroom, bathroom, or secondary suite and permits are required. We tell you exactly which category your project is in during the first visit, and handle applications when needed.
How long does basement finishing take?
A typical rec room runs 6-8 weeks; legal secondary suites run 8-12 weeks including inspections. You get a written schedule at quote stage and weekly progress updates.
My basement feels damp. Can it still be finished?
Usually, yes — but the moisture source gets fixed first. Sometimes that is grading or downspouts outside; sometimes it is an interior drainage membrane. We assess moisture before quoting, because finishing over an active moisture problem is how basements get finished twice.
Can you add a legal rental suite?
Yes. Legal secondary suites in Ottawa need code-sized egress windows, fire separation, interconnected smoke alarms and proper ceiling heights. We design to the Ontario Building Code and City of Ottawa rules, pull the permits, and manage inspections.
What flooring works in a basement?
Luxury vinyl plank and porcelain tile — both inorganic, both unfazed by a humid August. Engineered hardwood can work over the right subfloor. Wall-to-wall carpet on concrete is the one we always talk clients out of.
Service Areas

Basements Finished Across Ottawa.

Free Estimate

Finish my basement.

We respond within one business day with a site-visit window. Site visits and written quotes are free. No high-pressure sales — ever.

+1 (343) 998-8316 ecowavecontracting@gmail.com

Get a Free Quote

Takes 60 seconds. Fixed-price written quote within 1 business day.

Your Next Room Is Already Under Your Feet.

Free on-site assessment. Permits handled. Fixed-price quote.

Call (343) 998-8316