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Hamilton shed permits

Do you need a permit for a shed in Hamilton?

Check Hamilton shed and accessory-building permit rules, the 15 m² house-accessory exemption, plumbing conditions and required site information.

2 min readReviewed Oct 1, 2026
The short answerConditional

For an accessory structure to a detached, semi-detached or row house, Hamilton lists a permit exemption when the detached structure is no more than 15 m², one storey and has no plumbing.

The 15 m² rule is specific to qualifying residential accessory structures. Other uses can have a 10 m² threshold, and zoning still applies.

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House accessory structurePermit not required up to 15 m² when the listed conditions are metConditional

Hamilton lists an exemption for a detached accessory structure to a detached, semi-detached or row house when it is no more than 15 m², no more than one storey and has no plumbing.

Official sourceCity of HamiltonResidential Accessory Buildings · Accessory-building permit threshold and submission requirements
Verified2026-10-01Open proof
Larger structurePermit required above 15 m² for the qualifying house-accessory categoryConditional

Hamilton’s accessory-building page states that a building permit is required when the detached accessory structure exceeds 15 m².

Official sourceCity of HamiltonResidential Accessory Buildings · Accessory-building permit threshold and submission requirements
Verified2026-10-01Open proof
UseNot for habitation or commercial useRestricted

Hamilton describes residential accessory buildings as secondary structures on the same lot and says they cannot be used for commercial purposes or habitation.

Official sourceCity of HamiltonResidential Accessory Buildings · Accessory-building permit threshold and submission requirements
Verified2026-10-01Open proof

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Preparation checklist · Reviewed 2026-10-01

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Fees and timing

TimelineConfirm the current municipal review stage after the application is accepted as complete.
FeesConfirm the current Hamilton building permit fee schedule before filing.

Next steps

  1. Confirm whether the structure is accessory to a qualifying house
  2. Measure floor area and storeys
  3. Confirm whether plumbing is proposed
  4. Check zoning and submit the permit application if required

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