Taxes, Insurance, Assessment: What Changes (or Not) with Modular

In short — When it comes to municipal taxes, home insurance and the property assessment, a modular home set on a permanent foundation is treated like any house: it is assessed, taxed and insured according to its value, condition and location. The only real difference lies in the anchoring — a mobile home (on a chassis, not permanently fixed) falls under a separate regime.

It is one of the most reassuring points once understood: in the eyes of the tax authorities, the insurer and the municipal assessor, a modular home on a foundation is not a special case. Here is the detail.

Municipal assessment

The property assessment rests on the property's value (land + building), its condition and its location — not on the construction method. A modular home on a foundation is entered on the assessment roll like a site-built house, and municipal taxes follow normally.

Taxes

• Municipal and school taxes: calculated on the assessment, as for any property.
• Welcome tax (transfer duties): applies at purchase, under the usual rules.
• Taxes at construction: GST/QST on a new build follows the rules applicable to new residential construction.

Worth remembering — Taxation does not change "because it's modular." It is the permanent anchoring that places the house in the ordinary real-estate regime.

Home insurance

A modular home on a foundation is insured like a traditional house: coverage for the building, the contents, civil liability. Premiums depend on the value, materials, location and risks — the same factors as for any house. Simply mention the nature of the construction to the insurer; a certified, compliant building poses no particular difficulty.

The only real difference: modular ≠ mobile

Everything rests on this distinction. A mobile home (on a chassis, not permanently fixed) falls under a separate tax, assessment and insurance regime — and that is where most of the received ideas come from. A modular home on a foundation is not a mobile home. The distinction is detailed in modular, manufactured, or prefab, and its effects on value in lifespan and resale value.

To budget the whole project, see the real cost of a modular home and the financing guide.

Sources: Gouvernement du Québec (municipal property assessment). Guide written by Jeremy Soares. Last updated: June 26, 2026. Tax and insurance rules must be verified with official bodies and with insurers.