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Basement Renovations in The Glebe
Century brick doubles, semis on party walls, rubble stone foundations, and six-foot ceilings. Glebe basements are the most technical work we do in Ottawa, and on this land they are also the most valuable square footage to reclaim.
A Hundred Years Below the First Floor
Most of the Glebe went up between roughly 1900 and 1930, which puts your basement in a different category from anything in the suburbs. Expect rubble stone or early block walls, joists closer to six and a half feet than eight, a beam and posts down the middle, cast iron and clay drains, and occasionally remnants of knob-and-tube in the ceiling.
It is also the neighbourhood where reclaiming that space pays the most. Lots are narrow and fully built out, Carleton and downtown are both minutes away, and the demand for a well-built lower-level suite is constant. The work is genuinely technical, so the honest conversation happens at the assessment, before anyone promises you a bedroom down there.
- Underpinning and benching, engineered and permitted
- Rubble stone foundation repair, interior drainage, and sump systems
- Work on semis and doubles where a party wall is shared
- Legal lower-level suites near Carleton and the canal
What a Century Home Asks For
Four conditions we expect to find under a Glebe house, and how each one gets handled.
A basement dwelling unit needs 1.95 m of clear height over its required floor area, and very few original Glebe basements have it. Getting there means underpinning, which extends the footings deeper in engineered sections and keeps the full floor area, or benching, which is cheaper but gives up a band of floor around the perimeter. On a narrow Glebe footprint, losing that perimeter often matters, which is why underpinning is more common here than anywhere else in the city.
A rubble stone wall is not flat, not uniform, and not waterproof, and the clay or cast iron drains around it are a century old. We look at where water goes before we look at finishes: grading, downspouts, the condition of the drain, and whether an interior drainage system and sump are the right answer. A stone basement can be beautiful finished space, but only when it is allowed to dry rather than sealed shut.
Excavating beside a shared foundation is a different job from excavating in the middle of a suburban lot. Sequencing, shoring, and engineering all have to account for the structure next door, and access is usually a narrow side yard with no room for a machine. This is normal work in the Glebe and it is entirely doable. It just needs an engineer, a plan, and a contractor who has done it before rather than one improvising on site.
A basement bedroom needs an escape window with at least 0.38 m² of openable area, no dimension under 460 mm, a sill no higher than 900 mm, and about a metre of clear space in front of any window well. Cutting that into stone is real structural work. And where a property is designated or sits inside a heritage conservation district, exterior alterations can need heritage approval on top of the building permit, so we confirm the status before designing the opening.
Basements We've Finished Around The Glebe
Rec rooms, bars, home theatres, extra bedrooms, and full secondary suites, finished across Ottawa.
Why The Glebe Homeowners Choose OGC
For over a decade, OGC has been Ottawa's most reviewed design-build firm, with 200+ verified reviews across Google, Houzz, and HomeStars.
True Design-Build, One Roof
Design, engineering, permits, and construction all live in-house. No finger-pointing between a designer, a waterproofer, and a builder, just one accountable team from the first moisture assessment to the final inspection.
One Dedicated Project Manager
A single project manager runs your entire basement and stays reachable by phone or text the whole way through. No handoffs, no gaps, no wondering who is in charge.
See It Before We Build It
Every basement starts with full 3D renderings so you can see the finished layout before a single wall is framed. Change it on screen, not on site.
Fixed Pricing, No Surprises
What you are quoted is what you pay. No hidden fees, no mid-project change orders. OGC's price-match guarantee backs every basement contract we write.
Industry-Leading 7-Year Warranty
OGC backs every basement renovation with a 7-year warranty, one of the strongest in Ottawa. A finished basement is a major investment, and your peace of mind should match it.
Ottawa's Most Recognized Renovation Team
OGC is a member of the GOHBA, Tarion, RenoMark, CHBA, and the Ottawa Chamber of Commerce, and has been named Ottawa's Small Business of the Year. Our work has been featured on CTV, HGTV, and in Ottawa press.
What a Basement Costs in The Glebe
Ottawa-wide ranges by scope. Where a The Glebe basement lands depends on plumbing, moisture, and finish level, not on a price per square foot.
What Moves the Number in The Glebe
In the Glebe, the structure is the budget. Underpinning or benching to reach usable ceiling height is the largest line and is priced only after an engineer has seen the house. Interior drainage on a rubble stone wall, an egress opening cut through stone, and hand-excavation on a lot with no machine access all sit on top of the standard finishing cost.
Plumbing and Layout
Plumbing is what moves a basement budget anywhere in Ottawa. Rough-ins alone run roughly $2,500 to $20,000 depending on whether the slab has to come up, and adding a full bathroom typically adds $20,000 to $35,000. A suite kitchen, a wet bar, or a sewage ejector pit each add their own line.
Systems and Finishes
Electrical work commonly lands in the $3,000 to $8,000 range, HVAC extensions $5,000 to $11,000, and flooring anywhere from $10,000 to $36,000 depending on what you choose. Waterproofing, where the site calls for it, typically runs $1,900 to $6,300.
Want the full breakdown? Read our detailed guide to basement renovation costs in Ottawa, or get an instant estimate.
The Glebe Basement Questions
Often, yes, but the height is the gate. A basement dwelling unit needs 1.95 m of clear height over the required floor area, which most original Glebe basements do not have, so underpinning or benching is usually part of the project. Zoning on serviced land reliably supports three units on the property. Read more about what zoning allows for basement apartments.
The Ottawa finishing ranges apply, about $25,000 to $40,000 for a basic finish through $70,000 to $150,000 or more for a full suite, but Glebe projects sit at the higher end because of structural and drainage work. Underpinning is quoted separately after an engineer's assessment, since it varies with the depth, the soil, and the neighbouring structures. See our full cost guide.
Yes, when it is engineered and sequenced properly. Underpinning proceeds in small alternating sections so the wall is never unsupported, and where a party wall or a neighbouring foundation is involved the engineer accounts for it in the design. The risk comes from crews doing it without drawings or without a permit, not from the technique.
Interior work generally does not, but exterior alterations can. Cutting a new egress window, adding a window well, or building an exterior walk-down entrance on a designated property or one inside a heritage conservation district may need heritage approval alongside the building permit. We confirm the status of your address before the design is finalized.
Also Renovating Basements Nearby
OGC finishes basements across the older core, from Old Ottawa South and the canal through to Westboro and Hintonburg. See our main basement renovations in Ottawa page, or pick another neighbourhood.
