In short · November 4, 2026
351 Quebec municipalities (1,111,422 residents) have a new assessment roll (rôle d’évaluation) coming into force on January 1, 2027, including Gatineau and Drummondville. Their values reflect the market on July 1, 2025, and a review request (demande de révision) will have to be filed before May 1, 2027, so no later than April 30. Gatineau, the most populous city in the wave, filed its 2027-2028-2029 roll on October 27, 2026: the average increase for single-family homes and condos is 7.79%, according to the City (as reported by Radio-Canada and Le Droit).
2027 assessment roll: Gatineau and the largest cities
For each city, the dates follow from the Act respecting municipal taxation; population, current roll and median come from the roll in force published by the MAMH (2026 files).
City of Gatineau: 2027-2029 assessment roll
Gatineau's new assessment roll comes into force on January 1, 2027 for 2027 to 2029: its values reflect the market on July 1, 2025, and a review request must be filed no later than April 30, 2027.
Gatineau filed its 2027-2028-2029 roll on October 27, 2026. According to the City, the average increase for single-family homes and condos is 7.79%, compared with an increase of about 72% for residential properties on the previous roll, and the total value of the roll reaches $76.45 billion, compared with $65.5 billion on the 2024-2026 roll. The increase varies by sector: it is steeper in Buckingham and Masson-Angers. The City points out that a higher value does not mean an equivalent tax increase: the bill depends on the 2027 budget rates. Review fees remain those of By-law 943-2023: $80 up to $500,000, $325 up to $2M, $574.50 up to $5M, $1,149.25 above (City page checked November 4, 2026).
The Act provides for the roll to be filed between August 15, 2026 and September 15, 2026, with a possible extension to November 1, 2026, and for the assessment notice to be mailed before March 1, 2027. Gatineau's current roll (2024-2026) values properties as of July 1, 2022; the median single-dwelling value (house or condo) on it is $434,100 across 80,013 units. Population 305,437, Outaouais. On Payotte: real estate professionals in Gatineau and the chartered appraiser in Gatineau.
City of Drummondville: 2027-2029 assessment roll
Drummondville's new assessment roll comes into force on January 1, 2027 for 2027 to 2029: its values reflect the market on July 1, 2025, and a review request must be filed no later than April 30, 2027.
The Act provides for the roll to be filed between August 15, 2026 and September 15, 2026, with a possible extension to November 1, 2026, and for the assessment notice to be mailed before March 1, 2027. Drummondville's current roll (2024-2026) values properties as of July 1, 2022; the median single-dwelling value (house or condo) on it is $313,100 across 19,783 units. Population 85,601, Centre-du-Québec. On Payotte: real estate professionals in Drummondville.
City of Cowansville: 2027-2029 assessment roll
Cowansville's new assessment roll comes into force on January 1, 2027 for 2027 to 2029: its values reflect the market on July 1, 2025, and a review request must be filed no later than April 30, 2027.
The Act provides for the roll to be filed between August 15, 2026 and September 15, 2026, with a possible extension to November 1, 2026, and for the assessment notice to be mailed before March 1, 2027. Cowansville's current roll (2024-2026) values properties as of July 1, 2022; the median single-dwelling value (house or condo) on it is $345,900 across 3,560 units. Population 17,318, Estrie.
City of Lavaltrie: 2027-2029 assessment roll
Lavaltrie's new assessment roll comes into force on January 1, 2027 for 2027 to 2029: its values reflect the market on July 1, 2025, and a review request must be filed no later than April 30, 2027.
The Act provides for the roll to be filed between August 15, 2026 and September 15, 2026, with a possible extension to November 1, 2026, and for the assessment notice to be mailed before March 1, 2027. Lavaltrie's current roll (2024-2026) values properties as of July 1, 2022; the median single-dwelling value (house or condo) on it is $386,850 across 4,578 units. Population 16,016, Lanaudière.
City of Gaspé: 2027-2029 assessment roll
Gaspé's new assessment roll comes into force on January 1, 2027 for 2027 to 2029: its values reflect the market on July 1, 2025, and a review request must be filed no later than April 30, 2027.
The Act provides for the roll to be filed between August 15, 2026 and September 15, 2026, with a possible extension to November 1, 2026, and for the assessment notice to be mailed before March 1, 2027. Gaspé's current roll (2024-2026) values properties as of July 1, 2022; the median single-dwelling value (house or condo) on it is $229,700 across 4,859 units. Population 15,503, Gaspésie–Îles-de-la-Madeleine. On Payotte: real estate professionals in Gaspé and the chartered appraiser in Gaspé.
City of Sainte-Adèle: 2027-2029 assessment roll
Sainte-Adèle's new assessment roll comes into force on January 1, 2027 for 2027 to 2029: its values reflect the market on July 1, 2025, and a review request must be filed no later than April 30, 2027.
The Act provides for the roll to be filed between August 15, 2026 and September 15, 2026, with a possible extension to November 1, 2026, and for the assessment notice to be mailed before March 1, 2027. Sainte-Adèle's current roll (2024-2026) values properties as of July 1, 2022; the median single-dwelling value (house or condo) on it is $420,300 across 5,643 units. Population 15,286, Laurentides.
Which cities have a new assessment roll in 2027?
351 Quebec municipalities switch rolls on January 1, 2027. Only 13 of these municipalities have 10,000 residents or more. Apart from Gatineau and Drummondville, the 2027 wave mostly affects small towns and rural municipalities. The large cities follow in 2028 (Québec, Laval, Longueuil, Sherbrooke, Saguenay) and in 2029 (Montréal, Lévis, Terrebonne).
| Municipality | Region | Population | Current roll | Median on the roll, single-dwelling |
|---|---|---|---|---|
| Gatineau | Outaouais | 305,437 | 2024-2026 | $434,100 |
| Drummondville | Centre-du-Québec | 85,601 | 2024-2026 | $313,100 |
| Cowansville | Estrie | 17,318 | 2024-2026 | $345,900 |
| Lavaltrie | Lanaudière | 16,016 | 2024-2026 | $386,850 |
| Gaspé | Gaspésie–Îles-de-la-Madeleine | 15,503 | 2024-2026 | $229,700 |
| Sainte-Adèle | Laurentides | 15,286 | 2024-2026 | $420,300 |
| Val-des-Monts | Outaouais | 14,593 | 2024-2026 | $480,600 |
| Rosemère | Laurentides | 14,204 | 2024-2026 | $687,150 |
| Sainte-Marie | Chaudière-Appalaches | 13,938 | 2024-2026 | $267,800 |
| Rawdon | Lanaudière | 13,124 | 2024-2026 | $313,600 |
| Saint-Hippolyte | Laurentides | 12,563 | 2024-2026 | $447,400 |
| Saint-Raymond | Capitale-Nationale | 11,964 | 2024-2026 | $266,700 |
| La Tuque | Mauricie | 11,319 | 2024-2026 | $154,700 |
When is the 2027 assessment roll filed?
The Act provides for the roll to be filed between August 15 and September 15 before it comes into force, with a possible extension to November 1. As of September 28, 2026: Windsor filed its 2027-2029 roll on September 11; Drummondville filed a preliminary roll on September 14, with the final roll expected no later than November 1; Gatineau had not yet published a notice of filing. Gatineau filed its 2027-2028-2029 roll on October 27, 2026, in committee of the whole (City news release of October 28).
The assessment notice must be mailed before March 1 of the first year of the roll. That document is what counts for your own file, including for the deadline.
Why 2027 matters more than usual
The 2024-2026 rolls reflected the market on July 1, 2022. The new ones reflect the market on July 1, 2025: three years of market movement at once. In municipalities where prices have risen, the new values may come as a surprise. A higher value is not an error in itself, but it is the right time to check that your file is accurate. To gauge what it will mean for your bill, the value is multiplied by your municipality's rate: compare the real property tax rate, city by city.
The first year of the roll is the only one when the general review window is open to everyone. After April 30, 2027, except for a late notice or an amendment, the value stands until 2029.
What to do before April 30, 2027
Three steps, in order:
- Check the year of your next roll in the calendar by municipality.
- When the notice arrives, check the inventory with the checklist.
- If the value looks too high, look for comparable sales around July 1, 2025, then follow the complete guide.
Seniors: the grant to offset a municipal tax increase
A new roll can sharply raise the value of a residence. The Québec government, through Revenu Québec, then pays the grant for seniors to offset a municipal tax increase, which partly offsets the resulting tax increase; it cannot exceed $500. The municipality tells you the amount of the potential grant.
Conditions: be 65 or over on December 31 of the previous year, have owned your residence for at least 15 consecutive years (your spouse's period can count), in an entirely residential unit with a single dwelling that is your principal residence, with family income under the threshold set by Revenu Québec.
You apply with Revenu Québec form TP-1029.TM, enclosed with your Québec income tax return; the amount goes on line 462.
Ville de Montréal and Ville de Québec, seniors’ municipal tax programs, checked November 6, 2026.
Official sources
- Données Québec: Quebec property assessment rolls (MAMH, CC BY 4.0, in French)
- Act respecting municipal taxation (CQLR, c. F-2.1), LégisQuébec (in French)
- City of Drummondville: public notice of filing of the preliminary 2027-2029 roll (PDF, in French)
- Ville de Windsor: public notice, 2027-2028-2029 assessment roll (in French)
- City of Gatineau: property assessment (in French)
- Radio-Canada, October 27, 2026: Gatineau’s assessment roll rises “moderately” (City of Gatineau figures; in French) — press source; same figures in Le Droit, October 27, 2026
- Québec.ca: requesting a review of the property assessment (in French)
- City of Montréal: property value (in French)
- Ville de Québec: property assessment review (in French)
Talk to a chartered appraiser in your area
For a plex, an income property, a file headed to the TAQ or any value you are seriously challenging, a chartered appraiser is the right person. Payotte has verified 30 in Quebec, one per sector, selected on public data, never on their budget.
Find the verified appraiser in my areaGeneral information based on public sources. This is neither legal advice nor a certified appraisal. A review request can also lead to a higher value.
Frequently asked questions
Which cities have a new assessment roll in 2027?
351 municipalities, according to the rolls published by the MAMH, including Gatineau, Drummondville, Cowansville, Lavaltrie, Gaspé, Sainte-Adèle and Rosemère. The full list is in Payotte’s calendar by municipality.
What is the reference date of the 2027-2029 rolls?
July 1, 2025. The Act sets the reference date at July 1 of the second fiscal year before the first fiscal year of the roll.
What is the deadline to challenge a 2027 roll?
As a general rule, before May 1, 2027, so no later than April 30, 2027. A longer deadline applies if the assessment notice is mailed after the end of February.
When does Gatineau's 2027 assessment roll come out?
The Act provides for the 2027-2029 roll to be filed between August 15, 2026 and September 15, 2026, with a possible extension to November 1, 2026, and for the assessment notice to be mailed before March 1, 2027. Gatineau filed its roll on October 27, 2026: according to the City, the average increase for single-family homes and condos is 7.79%. Each property’s assessment can be looked up on the City’s website.
What is the deadline to challenge Gatineau's 2027 roll?
As a general rule, no later than April 30, 2027, using sales close to July 1, 2025 as comparables. In Gatineau, the filing fee ranges from $80 to $1,149.25 depending on the value on the roll (By-law 943-2023, schedule still posted by the City on November 4, 2026).
Does Montréal have a new roll in 2027?
No. Montréal is on its 2026-2028 roll; its next roll comes into force in 2029. Québec, Laval, Longueuil, Sherbrooke and Saguenay follow in 2028.