Hamilton building permits, with the actual fees and the actual portal

First, forget Cloudpermit

Many Ontario municipalities run permits through Cloudpermit. Hamilton does not. The City awarded a contract to Computronix to implement its POSSE platform, and applications now run through the my.hamilton.ca customer portal, which went public in July 2026. The reason is worth knowing: Council report PED25161 records that after the 2024 cyber-attack, the previous permitting system was "deemed unrecoverable." If a contractor tells you they will "file it in Cloudpermit" for a Hamilton address, they have not pulled a permit here recently.

The two-tier approvals problem

Hamilton's Applicable Law Checklist splits approvals into those that must be cleared before the application is accepted and those cleared before the permit is issued. The first tier is where projects die: Site Plan approval, Ontario Heritage Act clearance, Source Water Protection if you are in a wellhead protection area, Niagara Escarpment Commission development permits, and conservation authority permits. There is also a genuinely local one: construction within 30 metres of the Hamilton LRT corridor requires a Metrolinx Corridor Development Permit.

Which conservation authority you deal with depends on where in the city you are, and there are four of them. That, plus escarpment development control, is a guide of its own; the short version is that an NEC development permit is free but must be in hand before the City will issue a building permit.

"The Hamilton mistake I see most is designing first and mapping approvals second. In this city the mapping is the design constraint. Escarpment control, four conservation authorities, seven heritage districts, an LRT corridor. An hour of checking at the start is worth more than any drawing."

Mitch Fraser, owner, Ontario Contracting Co.

What it costs

Hamilton prices permits from a Service Index under Building By-law 15-058, with the fee schedule replaced by a by-law passed January 22, 2025:

• $18.32 per m² for a detached, semi-detached or row house
• $4.06 per m² to finish a basement
• $5.36 per m² for other residential work such as interior alterations
• $515 flat for an additional dwelling unit inside an existing house; $1,030 flat for a detached ADU
• $0.00 for exterior barrier-free access work

Then there are the fees nobody plans for: $248 for a premature or additional inspection, $187 per hour for additional plan review when a non-compliant resubmission goes past the first, $187 per hour for pre-application Building Code consultation, and $474 for stock plan review. On the planning side, a Zoning Verification Report is $135 regular or $220 express, and Hamilton offers a Routine Minor Variance at $745 for pools, decks, sheds, accessory buildings, porches and eave projections, against $4,135 for a full minor variance. That $745 tier saves real money on small projects and almost nobody outside the trade knows it exists.

Inspections

Inspections are booked centrally at 905-546-2424 ext. 7777 or building.inspections@hamilton.ca, never by calling an inspector directly, and the Building Code requires them within two business days. Note the split: permits issued after July 6, 2026 have inspections booked online through my.hamilton.ca instead. Hamilton publishes a 24-stage inspection table that includes items many municipalities do not name separately, including a Radon Inspection and an Underslab Insulation inspection, plus a Ball Test on sanitary and storm sewers performed in the inspector's presence.

Timelines, and who actually sets them

The review clock is provincial, not municipal: 10 business days for a house, rising for more complex buildings, and it only starts when the application is complete. That word is doing all the work. Incomplete drawing packages are the most common cause of a "slow" Hamilton permit. The City also requires drawings to scale and printed in ink; pencil originals are refused. Most residential infill, additions, accessory buildings and detached ADUs need a sealed professional grading plan.

What happens if you skip it

Under the Building Code Act, Hamilton can issue an order to comply that is registrable on title, plus fines up to $50,000 for an individual and $500,000 for a corporation on a first offence. The broader consequences, insurance denial and collapsed home sales, are covered in our article on unpermitted work.

The amalgamation question

There is one Building Division for the whole city. Ancaster, Dundas, Flamborough, Glanbrook and Stoney Creek addresses are not separate departments, though Municipal Service Centres exist in each (Ancaster 300 Wilson Street East, Dundas 60 Main Street, Flamborough 163 Dundas Street East, Glanbrook 4280 Binbrook Road, Stoney Creek 777 Highway No. 8) alongside City Hall at 71 Main Street West.