For Oshawa bathroom renovations, Hayes Plumbing & Bathroom Renovations works out of our own shop at 448 Ritson Rd. South, about 10 to 15 minutes from most homes in the city. Brian Hayes founded the company here in 1961, and it is still family-owned. We manage the whole room, layout and demolition included, through to tile, fixtures and trim. The plumbing itself is done by our registered plumbing technicians.
Bathrooms we have finished
Photos from Hayes Plumbing bathroom projects. For prices, see our guide to bathroom renovation costs in Durham Region.
Renovated bathroom with a long vanity, lit mirror and walk-in shower 
Glass shower with a lit niche, rain head and teak bench 
Sliding glass shower with a bench, built-in shelves and patterned floor
What Oshawa bathroom renovations with Hayes include
One company runs all of it, so the plumbing and tile work are booked together, not chased separately.
- If the layout stays, we replace the tub (drop-in, alcove, jetted or standalone) or swap it for a walk-in shower, then fit new tile, a vanity, a toilet, faucets and shower trim.
- A new layout means moving fixtures. It can also bring a custom shower, custom tile, heated floors, an exhaust fan and electrical upgrades.
- Adding a bathroom, such as a basement washroom or an ensuite, starts from a new rough-in.
- For easier access we install walk-in tubs, grab bars, bench seating and comfort-height toilets.
- Vanities and cabinetry come with quartz, laminate or cultured marble tops, along with custom glass and towel bars. We supply Riobel, Moen, Kohler, Mirolin and American Standard, or install fixtures you buy.
From first call to final inspection
- Call (905) 576-3043 or use the estimate form. Phone photos and rough room sizes help us arrive prepared.
- At a free in-home visit we look at the room, the fixtures and the plumbing we can see, and talk through what you want.
- A written scope and price follows. It lists the selections still open and anything we can only judge after the old tile and drywall come off.
- If the plan needs a City of Oshawa building permit, Hayes pulls the permit for you before demolition, and the City's building inspector is called before work begins.
- Once fixtures and finishes are chosen and ordered, the work runs in sequence: demolition, rough-in, tile, then fixtures and the finishing details.
Planning costs for Oshawa bathroom renovations
Our Durham Region bathroom cost guide sets 2026 planning ranges by room size and scope. A few examples:
- A 50 to 100 square foot main bathroom with new tile, a replacement tub or shower and updated plumbing connections (partial renovation): $15,000 to $25,000.
- That room taken to the studs, with a new subfloor, rough-in plumbing and electrical work (full gut): $25,000 to $40,000.
- A powder room under 50 square feet needing only paint, a vanity, fixtures, a mirror and lighting (cosmetic update): $5,000 to $10,000.
- A gutted ensuite over 100 square feet: $35,000 to $55,000.
What else affects the budget
The guide adds 15 to 20 percent for premium fixtures and about $2,500 to $5,000 per accessibility change. In an older house, hold some money back for what demolition turns up, like water damage under an old tub. Where a permit is needed, the City sets the fee from its Building By-law, and those fees rose 3 percent on January 1, 2026. Our estimate costs nothing, and Financeit payment plans are available.
Oshawa permits for bathroom work
Building permits come from the City of Oshawa through its online Application Portal. When your bathroom needs one, Hayes pulls the permit for you. The City lists alterations, finishing a basement and changes to plumbing systems among work that needs a permit. Its basement renovation page says interior renovations usually need one, naming moving plumbing, removing or adding walls and adding a bathroom.
According to the City, you do not need a permit to replace plumbing fixtures such as a sink or toilet, replace floor finishes or install cabinets with no plumbing changes. Zoning rules still apply.
For a basement bathroom, the City wants scaled drawings that mark each fixture as new or existing and show an exhaust fan if there is no opening window. It also wants a water distribution sizing form when plumbing work is proposed. If the bathroom is part of a new second unit, the City uses a separate "add a dwelling unit" application. Once a permit is issued, the permit holder calls the building inspector at 905-436-3311 before starting, and the inspector says when to book each inspection.
Oshawa homes by age
Statistics Canada's 2021 Census counted 66,630 occupied homes in Oshawa (sample data). Of those, 15,700 were built in 1960 or earlier and 23,330 from 1961 to 1980, so about 59 percent predate 1981. Roughly 14,240 went up from 2001 to 2021. The age of the house decides what we check first. We would rather find a problem at the estimate than halfway through demolition.
- 1960 or earlier: the Region of Durham says lead water service pipes are typically found in homes built before the mid-1950s. That pipe ends at the water meter, not the bathroom, but a renovation is a good time to check. We also look for galvanized steel supply pipe and cast iron drains.
- 1961 to 1980, the city's largest group: a bathroom this age may have been redone already, so the estimate records any earlier work we can see and what to check after demolition.
- 1981 or later: newer plumbing usually means fewer surprises, so more of the budget goes to layout and finishes.