Advertising Rules, Property Representation, and MLS/RESO Standards (Ontario)

Regulatory note: REBBA 2002 was renamed and substantially amended and now operates as TRESA (Trust in Real Estate Services Act, 2002), with phased changes that took effect through 2023. RECO administers TRESA and its Code of Ethics. Some older RECO bulletins still reference "REBBA"; the substance of the advertising rules has largely carried forward. Verify against the current Code of Ethics.

1. Who and what the advertising rules cover

The advertising rules apply to all registrants — brokerages, brokers, and salespersons — and to teams. They cover essentially any advertisement in any medium: yard signs, print, business cards, websites, social media, email, video, and paid online ads. RECO has a dedicated bulletin for online/social advertising because the same standards apply there, including on space-limited platforms.

2. Core advertising requirements

Identify the brokerage

Every advertisement must include the name of the brokerage. The brokerage name must be clearly and prominently displayed.
The name used must be the brokerage's registered name as recorded with RECO (or a registered trade name). The descriptor "brokerage" (or "real estate brokerage") is expected to accompany the name.
A salesperson or team cannot advertise in a way that hides or de-emphasizes the brokerage. Advertising that presents a team or an individual as if it were itself the registered entity is treated as misleading.

Identify registrants correctly

A registrant's name in advertising must match their RECO registration. Short forms and nicknames are not permitted in place of the registered name (e.g., advertising as "Bob" when registered as "Robert").
Use only accurate descriptors of registration status — e.g., "real estate salesperson," "broker," or "real estate agent." Do not imply a status a person does not hold.

Team naming

Teams must be identified in a way that does not misrepresent them as a registered brokerage. The brokerage must still appear clearly. Team names are subject to RECO's requirements and must not be false or misleading; RECO has published specific expectations on acceptable team names and on the word "team." Verify the current team-name rules at RECO before adopting or changing a team name.

3. The prohibition on false, misleading, or deceptive advertising

TRESA's Code of Ethics prohibits registrants from including anything false, misleading, or deceptive in advertising. RECO distinguishes:

False — factually incorrect; little room for interpretation (e.g., stating an inaccurate square footage or a credential the person does not hold).
Misleading — creates a wrong idea or impression. A statement can be misleading even if only some readers are misled, and even if each individual word is technically true; incomplete or vague information can mislead.
Deceptive — intended to mislead.

Practical consequences: - Comparative and volume claims ("#1 agent," "top producer," "we sell faster") must be truthful and supported by verifiable facts, with the basis/measurement disclosed. - Awards and rankings should state the source, the date/period, and the relevant population (e.g., office, region) so they are not misleading. - No party/transaction details without consent — advertising must not disclose identifying information about a property, the parties, or the terms of an agreement (such as price) without the necessary consent.

4. What a registrant can and cannot claim

Can: accurately describe their registration and role, their brokerage, genuine services offered, and factually supportable performance statements with the basis disclosed.
Cannot: state or imply they are a brokerage when they are not; use unregistered names/nicknames; make unsubstantiated superlatives; advertise another registrant's listing or the brokerage's inventory in a way that suggests it is their own without proper attribution; or omit the brokerage name.

5. Duty not to misrepresent — measurements and square footage

Registrants have a duty to avoid material misrepresentation. Property size / square footage is a common source of complaints, because different measurement conventions produce different numbers.

Residential Measurement Standard (RMS) concepts

The Residential Measurement Standard (RMS) is a defined, consistent method for measuring and reporting residential floor area so that listings are comparable. Core RMS concepts (the RMS was developed in Alberta and is widely referenced across Canada as a best practice; confirm whether and how your Ontario board mandates RMS or an equivalent — verify at trreb.ca and reco.on.ca): - Use one consistent measurement method for all properties so sizes are comparable. - Measure above-grade living area separately from below-grade area; do not combine them into a single "total" that overstates above-grade size. - Measurements are generally expected to be within about 2% of the true RMS size. - Additional information (e.g., builder plans, MPAC figures) may be provided only if it is consistent with the RMS disclosures and is not itself misleading.

Disclose the source

Best practice, and consistent with the duty not to mislead: state where a measurement came from (e.g., "measurements from builder's plans," "from MPAC," "from third-party floor-plan/iGUIDE measurement") rather than presenting a number as verified fact when it is not. If a figure is uncertain, say so. Do not simply copy a prior listing's number without knowing its source.

6. MLS®, TRREB, and how listing data flows

MLS® and TRREB

MLS® (Multiple Listing Service®) is a co-operative system operated by real estate boards; MLS® and REALTOR® are trademarks owned by CREA and licensed to members.
TRREB (Toronto Regional Real Estate Board) operates the MLS® System for the Greater Toronto Area — one of the largest in North America. Members list and search inventory through TRREB's MLS® System (delivered via TRREB's PropTx platform).

RESO data standards

The Real Estate Standards Organization (RESO) publishes the standards that let real estate data move between systems: - RESO Data Dictionary — a standardized set of field names and values (e.g., how "list price," "bedrooms," or "property type" are named), so data means the same thing across boards and vendors. - RESO Web API — a modern RESTful interface for retrieving listing data, replacing the older RETS protocol. TRREB has transitioned from RETS to the RESO Web API (via PropTx), aligning TRREB fields with the RESO Data Dictionary and improving interoperability with technology vendors (IDX/VOW websites, CRMs, analytics).

How listings syndicate

A listing is entered into the local board's MLS® System (e.g., TRREB via PropTx).
Listing data flows to the public consumer portal REALTOR.ca, operated by CREA, and — where the member/brokerage permits — to brokerage/agent websites through IDX (Internet Data Exchange) and VOW (Virtual Office Website) feeds.
CREA's DDF® (Data Distribution Facility) is CREA's national feed that lets members distribute their own listings (office feeds, agent feeds) to approved websites and third parties.
Access to board/CREA data is governed by licensing and display rules (attribution, permitted use, opt-outs). Scraping or redistributing MLS®/REALTOR.ca data outside these licences is generally prohibited; obtain data through an authorized feed (board RESO Web API, CREA DDF®) and follow the display and trademark rules.

Note for Ontario CREA members: a CREA member brokerage/registrant can typically self-authorize a legitimate DDF® feed of MLS® data and photos through CREA, which is the compliant alternative to scraping REALTOR.ca. Verify eligibility and terms with your board and CREA.

7. Enforcement

Non-compliant advertising can lead to RECO disciplinary proceedings under the Code of Ethics, penalties, and in serious cases action affecting a registrant's registration. Because RECO periodically updates its bulletins (e.g., Bulletin 5.1 advertising requirements and 5.3 advertising online), re-check the current bulletins at reco.on.ca before finalizing any advertising template or policy.

Sources

RECO Bulletin 5.1 — Advertising requirements: https://www.reco.on.ca/agents-and-brokerages/reco-bulletins/reco-bulletin-5-1-advertising-requirements
RECO Bulletin 5.3 — Advertising online: https://www.reco.on.ca/agents-and-brokerages/reco-bulletins/reco-bulletin-5-3-advertising-online
RECO — TRESA explained: https://www.reco.on.ca/agents-and-brokerages/tresa-explained
Residential Measurement Standard (RMS) overview: https://www.reca.ca/residential-measurement-standard/ and https://goiguide.com/blogs/the-9-principles-of-the-residential-measurement-standard-rms
TRREB: https://trreb.ca/ ; TRREB RETS→RESO Web API transition: https://repliers.com/trrebs-transition-from-rets-to-reso-web-api-navigating-the-challenges/
RESO (Data Dictionary / Web API): https://www.reso.org/
CREA DDF® / REALTOR.ca (national data distribution): https://www.crea.ca/