A homeowner in Kirkendall called me in March about a basement she'd finished the previous autumn. Beautiful job. Engineered floor, pot lights, a proper laundry room. By the time I got down the stairs I could smell it before I could see it, that flat mineral smell of damp behind drywall. Water had come in along the west wall footing sometime in February and had been quietly working its way through the bottom eight inches of everything.

She'd done nothing wrong except one thing. She'd started at the end.

After thirty-odd years working on houses between Dundas and Stoney Creek, I've watched this same sequence error cost people more money than any other single decision they make. So here's the order I'd give anyone renovating an older Hamilton home, and the reasoning behind it.

Why does renovation order matter more in Hamilton than elsewhere?

Two reasons, and they're both geological before they're architectural.

The first is the escarpment. A lot of this city sits on or below a slope, which means water doesn't just fall on your property, it arrives from somewhere uphill. Below the mountain brow in particular, houses deal with lateral water movement that a flat-lot subdivision never sees.

The second is clay. Hamilton's soil holds water rather than draining it, then expands and contracts against foundation walls through freeze and thaw. That's the mechanism behind most of the hairline cracks I get called about in Crown Point and Strathcona.

Add a housing stock where plenty of homes predate the Second World War, with original weeping tile that's either clay pipe or gone entirely, and you get a city where the water problem is the default assumption rather than the exception.

Stage one: solve the water before you touch anything cosmetic

This is the whole argument, honestly. Everything below is detail.

Before a single wall gets framed, you want to know where water goes when it rains hard. That means grading, downspouts, the condition of the weeping tile and whether the foundation has active cracks. Some of this is cheap. Re-grading soil away from the foundation and extending downspouts six feet out is a low-cost afternoon that solves a surprising share of "wet basement" calls I get.

The rest is not cheap, which is exactly why it needs to happen before you spend money on top of it. If the diagnosis points to a failed drainage system, you're looking at proper reliable drainage repairs services in Hamilton rather than a patch. And if the foundation itself is letting water through, that's a waterproofing services in Hamilton conversation, interior or exterior depending on access, budget and where the water's actually entering.

One thing worth knowing: the City of Hamilton has run a Protective Plumbing Program offering rebates toward backwater valves, sump pumps and related work. Check the current terms with the city directly, because the eligibility and amounts have changed over the years. It's real money and a lot of homeowners never look it up.

Stage two: close the envelope

Once water is handled, you deal with the parts of the house that separate inside from outside. Windows and doors.

The reason this comes before finishes is mechanical, not aesthetic. Installing a window means opening the wall, disturbing the interior trim, and often finding rot in the sill or framing that nobody knew about. Doing that after you've painted is how a two-day job becomes a two-week job.

In older Hamilton homes this stage gets complicated because the openings are rarely square and almost never a standard size. Century homes settle. A 1912 house in Durand may have four "identical" front windows with an inch of variation between them. That's where custom window installation in Hamilton earns its cost, because a stock unit in an out-of-square opening gets shimmed and foamed into a shape it wasn't built for, and it will leak air at the corners within a few winters.

Same logic on entryways. Original door openings in this city's older stock are frequently narrower or taller than modern standard, and heritage-district homes have appearance considerations on top of that, which is the usual reason people end up looking at custom door installation in Hamilton instead of something off a shelf.

Stage three: the part you actually wanted to do

Now you finish. Drywall, floors, kitchen, bathroom, trim, paint. All the work that makes the house feel like yours.

There's also a long tail of smaller jobs that tend to pile up during a bigger renovation and get forgotten afterward. Sticking interior doors, a railing that's loose, caulking, fixture swaps, the shelf that never went up. Batching those into one visit is what handyman services Hamilton homeowners tend to book once the dust settles, and it's a lot more efficient than calling someone out four separate times.

What the sequence looks like in numbers

Rough Hamilton ranges as of 2026. Every house is different and these move with access, depth and how much the previous owner improvised, so treat them as a planning starting point rather than a quote.

Look at the Kirkendall basement against that table. She'd spent well into five figures finishing the room. The repair meant tearing out the bottom half of it, doing the drainage work that should have come first, then paying to finish the same room a second time.

Frequently asked questions

Can I do the waterproofing later if my basement is dry right now?
You can, but "dry right now" is a weaker signal than people think in this city. Basements below the escarpment often stay dry for years and then take water during one heavy spring melt. If you're finishing the space anyway, the marginal cost of confirming the drainage while the walls are open is small. The cost of finding out afterward is not.

Do I need a permit for this kind of work in Hamilton?
Structural changes, most basement finishing involving new rooms, and anything altering the building envelope generally require a permit from the City of Hamilton. Straight replacement of a window in an existing opening usually doesn't, though heritage-designated properties have their own rules. Confirm with the city before you start, because retroactive permits are worse than slow ones.

Is interior or exterior waterproofing better?
Neither is universally better. Exterior addresses water before it reaches the wall and is the more thorough fix, but it means excavation, which gets expensive and awkward on narrow city lots with mature trees or a driveway in the way. Interior systems manage water that's already entered and relieve hydrostatic pressure. On a tight downtown lot, interior is often the practical answer.

What time of year should I book window replacement?
Late spring through early autumn is easiest, mainly because the house is open to outside air during the install and sealants cure better in moderate temperatures. That's also peak season, so lead times stretch. Booking in late winter for spring work usually gets you a better spot in the schedule.

My house is over a hundred years old. Is any of this even worth it?
Usually yes, and often more than on a newer house. Older Hamilton homes tend to have solid structural bones, good material and layouts people still want. What they lack is a functioning water strategy and an airtight envelope, which are both fixable. That's a good position to renovate from.

The short version

Water, envelope, finishes. In that order, every time. It's not the exciting way to plan a renovation and it means the first cheque you write buys something nobody will ever see. But it's the difference between finishing a basement once and finishing it twice.

About the author
Mark has spent 30+ years repairing and renovating homes across Hamilton, Burlington and Grimsby, with a particular focus on the city's older housing stock. He runs  Home Repair & Renovation, Hamilton's trusted general contractor, offering home repair and renovation services in Hamilton, ON from foundation work through to finish carpentry.