What a parking garage restoration costs an Ontario condo

Most boards meet their garage repair bill the same way: a reserve fund study lands, the parking structure is flagged, and there is a dollar figure beside it. The question that follows is always the same — how much can we trust that number?

Why nobody can give you a fixed price

The damage in a parking garage is mostly hidden. Every winter, cars carry salty slush onto the deck. The chloride soaks into the concrete and eventually reaches the reinforcing steel. Once the steel corrodes, it expands — and cracks the concrete from the inside.

From the surface, a deck in that condition can look fine, or show nothing worse than staining. Sounding the slab tells you roughly where the hollow areas are. Only opening the concrete tells you for certain. That is why the number gets more accurate at every stage:

1. Reserve fund study — estimates the quantities.
2. Condition survey — measures the quantities.
3. Contract — prices the quantities, and records what is actually installed.

What raises the cost

1. Repair quantity

This is the largest factor by far. Repairs are measured by area, and full-depth repairs — where the slab is replaced through its entire thickness — cost several times more per unit than partial-depth repairs. A deck where most of the deterioration is near the surface is a very different project from one where it runs right through.

2. Access and phasing

Closing a whole level is the cheapest way to do the work. Keeping residents parking means splitting the job into phases, moving cars more than once and remobilising in each zone. That is often the right decision for an occupied building — but it adds cost, and the board should see it as a line item rather than a hidden premium.

3. Shoring

Full-depth repairs need temporary support from below while the new concrete gains strength. That can take part of the level underneath out of service, which feeds straight back into phasing.

4. Deferral

The most expensive variable is time. Corrosion keeps going whether or not the work is scheduled, so a repair deferred for a few years is usually a larger repair when it finally happens.

Deferral is the one cost driver the board fully controls.

Related serviceParking Garage RestorationWhat the contract covers, how we phase it, and common questions.

How to read a unit-priced tender

Restoration work is tendered on unit rates because the quantities are not fully known until the concrete is opened. A fixed price for unknown quantities would either put the contractor at risk or have the corporation paying for contingency it never uses. A typical tender includes:

• A rate per square foot for partial-depth repair
• A rate per square foot for full-depth repair
• A rate per linear foot for crack routing and joint replacement
• Lump sums for items such as coatings, mobilisation and line painting

The final contract value moves with the quantities actually installed. That is normal and expected. What boards should not accept is finding out at the end. Ask every bidder one question: how will installed quantities be reported, and how often? The answer tells you more than the rates do. On our projects, quantities are logged daily and reviewed with the consultant.

What to do before you tender

• Commission a condition survey. A restoration engineer measures the deterioration and writes the specification — better pricing, fewer disputes.
• Tender in winter. Concrete and coating work is seasonal in Ontario. Awarding early secures schedule position for the construction season.
• Require comparable submissions. Ask for rates in the consultant's format so bids are compared on rates, not assumptions.
• Carry a contingency. Have the engineer size an allowance for quantity overruns based on the structure's condition.

Solid Restoration teamRestoration contractor for GTA condominiums and commercial properties since 2013. We price, phase and build the work engineers specify.