Basement Renovation Service
Basement Renovationin Milton
Hawthorne Village · Beaty · Dempsey · Willmott · Ford
Milton has thousands of unfinished basements. Here is how we finish them.
A large share of Milton homes were handed over with a poured basement, a plumbing rough-in, and nothing else. That is a good starting point: the slab is newer, the foundation is usually dry, and the drain rough-in for a bathroom is already where the builder put it. The questions that decide cost are ceiling height under the ductwork, whether the lot gives you a walk-out or look-out, and whether you want a rec room or a separate unit. We finish basements across Milton with no travel surcharge, and we file with the Town of Milton for the work that needs a permit.
Check the 2026 basement renovation cost guide and how our renovation process works before you call.
One project on this site was completed in Milton. View all projects.
Milton basement renovation cost & timeline (2026)
| Scope | Cost range | Timeline | Typical inclusions |
|---|---|---|---|
| Finished rec room / family room | $100–$150/sq. ft. | 3–4 weeks | Framing, insulation, drywall, flooring, baseboards, lighting, paint. Example: 700 sq ft ≈ $70,000–$105,000. |
| Finished basement + 3-piece bathroom | $100–$150/sq. ft. | 4–5 weeks | Full finish plus bathroom with shower, plumbing permit, and ESA electrical. Priced per sq ft at estimate. |
| Second suite / basement apartment | $100–$150/sq. ft. | 6–8 weeks | Egress, fire-rated separation, separate entry, kitchen, smoke/CO alarms. Often lands at the higher end of the range. |
| Waterproofing add-on | +$8,000–$25,000 | +1–2 weeks | Interior perimeter waterproofing, sump pump, weeping tile when documented water incursion exists. Fixed add-on, not per sq ft. |
Milton neighbourhoods and what we find there
Basement Renovation in Hawthorne Village & Dempsey
Early-2000s basements, mostly 7.5 to 8 ft clear under the joists. Typical scope: rec room, three-piece bathroom on the existing rough-in, and a guest bedroom with a proper egress window.
Basement Renovation in Beaty, Clarke & Harrison
Detached homes and towns from the 2000s and 2010s. Some lots back onto the Escarpment side or a ravine and have look-out windows, which makes a brighter, more liveable lower level.
Basement Renovation in Willmott, Ford & Cobban
Newest stock, often 8 to 9 ft basements with a bathroom rough-in. Owners here frequently ask about a separate unit for family or rental — we scope the fire separation and egress requirements before you commit.
Basement Renovation in Old Milton & Timberlea
Older basements with lower ceilings and some moisture history. We check for water before we frame anything, and quote waterproofing as a separate fixed line if it is needed.
People also ask
Basement Renovation questions - Milton
How much does a basement renovation cost in Milton?
We quote finished basements at $100–$150/sq. ft., so a 700 sq ft basement in Milton lands around $70,000–$105,000. A rec room, a basement with a three-piece bathroom, and a legal second unit all sit inside that per-square-foot range at different points. Waterproofing, when there is documented water, is a fixed add-on of $8,000–$25,000.
How long does a basement renovation take in Milton?
Three to four weeks for a finished rec room, four to five with a three-piece bathroom, and six to eight for a legal second unit. Permit review adds time before construction starts when a bathroom or a unit is part of the scope.
Do I need a building permit in Milton?
Yes when a wall is removed or moved, plumbing is relocated or added, new electrical circuits go in, or a basement is finished with a bathroom or a separate unit. Like-for-like replacements in the same positions usually do not need a building permit, though electrical work still goes through ESA. We prepare drawings, file with Town of Milton Building Services, and book every inspection.
Can I add a basement apartment to my Milton house?
In many cases, yes. Ontario permits additional residential units in most detached, semi-detached, and townhouse properties, but the unit still needs a building permit from the Town of Milton and has to meet fire separation, egress, ceiling height, and separate-entrance rules. We confirm the zoning and building code path for your address before quoting the work.
Do I need a permit to finish a basement in Milton?
A finished basement with a new bathroom, new walls with electrical, or a separate unit needs a Town of Milton building permit. Painting and flooring over an already-finished space does not. We prepare the drawings, file the application, and book the framing, insulation, and final inspections.
Let’s talk
Contact Osoba Renos & Design
Planning a basement renovation in Milton? Book a free in-home estimate.
- Phone647-562-4275
- E-mailosobarenos@gmail.com
- Service areaMississauga & GTA