Your 2027 Property Assessment Notice is mailed at the turn of the year. The number on it will not be what your house is worth in January, and it is not meant to be. It is a July 1, 2026 number, and that gap starts almost every argument about assessments.
The notice has two dates on it, not one
Section 18(1) of the Assessment Act sets the valuation date at July 1 of the year the roll is completed, so the 2027 roll values your property as of July 1, 2026. Section 18(2) adds a second date: the value is determined as if, on that July 1, the property was in the physical condition it was in on the following October 31, and as if the permitted use was the same as on that October 31. For the 2027 notice that is a July 2026 market, with the house and the zoning as they stood on October 31, 2026.
So a renovation finished in August 2026 is in the 2027 roll, priced at July levels. A September sale down the street is not in it at all.
How far Langley and South Surrey moved after the valuation date
Fraser Valley Real Estate Board benchmarks for July 2026, the valuation month, against October 2026:
- Langley detached. $1.501M in July, $1.448M in October, down 3.5 per cent.
- Langley townhouse. $811,400 to $800,600, down 1.3 per cent.
- Langley apartment. $534,200 to $522,300, down 2.2 per cent.
- South Surrey and White Rock detached. $1.647M to $1.607M, down 2.5 per cent.
- South Surrey and White Rock townhouse. $834,900 to $800,900, down 4.1 per cent.
- South Surrey and White Rock apartment. $546,900 to $558,600, up 2.1 per cent.
Five of the six fell, so most owners here will open a January notice sitting above where their property type is now. The exception matters. South Surrey and White Rock apartments rose after the valuation date, so a condo owner there may be holding a notice that is low rather than high.
Permitted use is the line that catches people
Section 19(3) lets the assessor consider present use, location, cost, the selling price of comparable property, obsolescence, and any other circumstance affecting value. Read that beside section 18(2)(b) and the point lands. If the permitted use of your lot changed before October 31, 2026, that change is in the 2027 roll even though nothing about your house changed.
That is not theoretical here: the provincial small scale multi unit rules reset what a lot can hold, set out in how many units your Langley lot allows, and the transit oriented area rules do the same near the SkyTrain alignment, set out in transit oriented areas in Langley. If your land is now worth more to a builder than it is to you, the assessor is allowed to say so.
Section 19(8), and its deadline is three weeks out
There is relief for long term owners and almost nobody uses it. Section 19(8) says that if the assessor receives a notice from the owner and occupier of eligible residential property stating they owned and occupied it as their principal place of residence for the entire 10 year period ending the preceding October 31, the value must be determined taking into consideration only the actual use of the land and improvements, and no other use they could be put to. Eligible residential property is a parcel of 2.03 hectares or less with improvements designed and used for no more than three families. BC Assessment adds the test that makes it work: the land must have development potential, so its value in another use is higher than its residential value. An older house on a lot a builder wants, in Brookswood, Willoughby or Grandview Heights inside the Area 5 plan, is the fact pattern.
BC Assessment publishes the deadline as November 30 and says there is no legal authority to extend it. The Act's own wording is January 31, and BC Assessment says a form arriving between November 30 and the following March 15 may be dealt with through the assessment review process. Treat November 30 as the date. You have to apply every year, and section 19(9) keeps a notice alive if the property passes to a spouse. Get the current form from BC Assessment: the regulation that used to prescribe it was repealed in 2022.
Covenants and heritage are not yours to argue
Section 19(7) says the assessor must give consideration to the terms of a covenant registered under section 219 of the Land Title Act. A covenant limiting what can be built is not something you have to talk the assessor into. It is a factor they are required to weigh. Section 19(10) does the same for heritage designation, which is a Fort Langley conversation more than anywhere else here. What is registered against your title is covered in statutory rights of way and easements on title.
A bigger number is not automatically a bigger tax bill
BC Assessment's own line is that changes in property assessments do not automatically translate into a corresponding change in property taxes. Your share moves with how your change compares to the average change in your taxing jurisdiction, and those averages sit a long way apart between neighbouring municipalities.
On the 2026 roll, typical single family assessed values fell 3 per cent in the Township of Langley, to $1.406M, 8 per cent in the City of Langley, to $1.207M, 6 per cent in Surrey, to $1.464M, and 9 per cent in White Rock, to $1.580M. A White Rock owner whose value fell 9 per cent moved with the typical single family home there, so on that figure alone their share of the base did not move.
Assessed value does drive two things directly. The speculation and vacancy tax is charged as a percentage of it, set out in the speculation and vacancy tax in Langley and White Rock, and the home owner grant and deferment thresholds are written in assessed value, set out in property tax deferment in BC. Property transfer tax is not one of them; it runs on fair market value at the transfer.
If the number is wrong, the clock is short
Start with a phone call, not a form. BC Assessment's guidance is to use Assessment Search, which is free, to compare your value against similar properties, then contact the local office. An appraiser will explain how the value was reached and can correct an outright error without a hearing.
If that does not settle it, section 32 limits a complaint to five grounds: an error or omission about a name, the land or the improvements, a value that is not actual value, improper classification, or an exemption improperly allowed or disallowed. BC Assessment is blunt that a percentage change on its own is not a valid reason for a review. Section 33 requires the notice of complaint to be filed with the assessor no later than January 31. January 31, 2027 falls on a Sunday, and when it fell on a Saturday for the 2026 roll BC Assessment set the date at February 2, so read the date printed on your notice. Review panels sit between February 1 and March 15, and the decision notice goes out before April 7. After that it is the Property Assessment Appeal Board by April 30, with the prescribed fee. Section 40 puts the burden of proof on you, and section 50(1.1) lets the board grant leave to an owner who missed January, which is a mercy, not a plan.
What the number is good for
Pricing a listing is not it. An assessment is a July estimate built for a tax roll, and a buyer is not paying it either way. If you want a current number, start with the home value tool and I will follow it with the sales the assessor could not use. How a house gets brought to market is on the marketing page.
If your January notice looks wrong in Langley, South Surrey or White Rock, send me the roll number and I will pull the sales as they stood on July 1 before you file. And if you have owned and lived in the same house for ten years on a lot a builder would want, deal with section 19(8) before November 30.
Sources
Assessment Act sections 18, 19, 32, 33, 40, 41 and 50, from bclaws.gov.bc.ca, consolidation current to November 3, 2026. B.C. Reg. 240/96 and its repeal by B.C. Reg. 262/2022, also from bclaws.gov.bc.ca. Section 19(8) eligibility and the November 30 deadline, the key dates list and the appeal guide from info.bcassessment.ca. The 2026 roll typical values and the property tax comment from BC Assessment's Lower Mainland 2026 release. Benchmark prices from the Fraser Valley Real Estate Board's July 2026 and October 2026 statistics packages. Checked November 9, 2026. Not legal advice.