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IDX RULES & REGULATIONS
To the extent that this document supplements the CMLS’ Rules and Regulations relating to IDX, it is a statement of the CMLS’ policy regarding such matters.
Access to the IDX Database will be provided via an “FTP” file. This is described more fully in the Technical Documentation. Any IDXS intending to use any other method for downloading and updating the IDX Database must seek approval of its method from the CMLS. This approval will not be denied unless the method proposed is likely to result or does in fact result in violations of the IDX rules and regulations, will weaken system security or result in degradation of the performance of any of the CMLS’ systems. The use of any other method also requires payment to the CMLS of any costs it incurs to provide and maintain the access method, including reasonable fees for CMLS staff time.
Rules and Regulations: Sections 8.1 – 8.18 of CMLS’ Rules and Regulations contain provisions relating to IDX. These provisions are reproduced in their entirety here. In many cases, explanatory remarks appear to the right of the rule provision:
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Rule |
Explanation |
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Section 8.1 Definition, Internet Data
Exchange: “Internet Data Exchange” or “IDX” is a means
by which each CMLS Participant subscribing to the program
(the “Internet Data Exchange Subscriber” or “IDXS”) permits
the display of its active listings appearing in the CMLS on each
other’s Internet web site.
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Section 8.2 Definition, Internet Data
Exchange Database: The “Internet Data Exchange
Database” or “IDX Data” is the current aggregate compilation of
all active exclusive listings of all IDXSs except those listings
where the property seller has opted out of Internet publication
by so indicating on the listing contract. |
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Section 8.3 Presumption of
Participation: Every CMLS Participant is automatically
an IDXS unless the Participant chooses to “Opt-Out” by
completing and submitting the “Election not to participate in
the Internet Data Exchange program” form included at the end
of this document. |
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Section 8.4 Permission to Publish the
Internet Data Exchange Database on the Internet:
An IDXS may publish all or a portion of the IDX Data on the
Internet in accordance with all provisions of Sections 8.1
through 8.18, inclusive, of the CMLS Rules and Regulations. No
CMLS Participant shall display or publish CMLS listings or any
other CMLS data in an electronic format in any manner that does
not conform to the requirements the CMLS Rules and Regulations.
Unless expressly contravened by the provisions of this section,
all other Rules and Regulations remain in full force and effect.
If an IDX web site displays a subset of
the IDX Database it must be disclosed on the web site. See
Section 8.1.5 of the IDX “Broker informational packet &
technical documentation” for sample disclosures.
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You need not display the whole IDX
Database. You may choose to display only a subset of the IDX
Data such as; listings in a particular price range, geographical
area, or property type. You may also choose not to display the
listings of certain of your competitors.
If you plan to display only a subset of
the IDX Database, see Section 8.1.5 in this document regarding
required disclosures. |
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Section 8.5 Data Which May be
Published Under IDX: With the exception of the
specific address (Street Name, Street Number, Street Type and
Unit Number), which may not be displayed, an Internet
publication of another IDXS' listing shall not contain more (but
may contain less) information than contained in the data fields
listed in “Appendix C of the IDX Broker informational packet &
technical documentation”.
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Section 8.6 Participant’s
Qualification to be an IDXS: In order to be an
IDXS, a Participant must be actively engaged in providing real
estate brokerage services to buyers or sellers in residential
real estate transactions.
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Section 8.7 IDX Data Must be Kept
Current: While daily updates are encouraged, the
IDX Data on every IDXS web site must be updated at least once
every seventy-two hours. An IDXS who chooses to update less
frequently than daily must place a disclaimer on its web site’s
search page indicating the update frequency.
Additionally, all IDXS web sites must include a statement
indicating the date of the last update similar to, “Data last
updated: xx/xx/xx” on the first page displaying search results.
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The CMLS strongly encourages you to update
your web site with fresh IDX Data DAILY. In the event
you choose to update less frequently than daily, you must place
a disclaimer on your web site indicating the frequency of update
and the last update date. See Section 8.1.6 in this document
for a sample disclosure of this type. |
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Section 8.8 Prohibition on
Modification of IDX Data: An IDXS may not
modify or manipulate the data relating to another IDXS’ listing.
(This is not a limitation on the design of the site but
refers to the actual data.) |
You can do anything you want to
(consistent with the Code of Ethics and applicable law) data
relating to your own listings. You can do with other brokers'
listings only what these rules permit you to do. You are
strictly prohibited from modifying the IDX Data from another
IDXS. This could conceivably include displaying other data
alongside the other IDXS' data. For example, if you geocode the
listings on your site, and then tie demographic or other data to
them, you will want to be cautious about displaying such data on
the same screen as another IDXS' listing. You should make
efforts to distinguish the data you have supplied from the IDX
Data. Segregating such data "geographically" on the screen or
including a credit on the non-IDX data (such as "Demographic
data courtesy of ABC Title Company") would be ways to accomplish
this.
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Section 8.9 Identifying IDX
Listings: Any web site containing IDX Data must
prominently display, on the first page containing any listing
data, (a.) a clear explanation that certain listings are
provided courtesy of the CMLS IDX program and (b.) how these IDX
listings will be identified. This is necessary to help insure
anyone visiting an IDX web site be clearly informed that the
host of the IDX web site is not the listing agent for all of the
displayed properties.
While the CMLS will allow the
IDXS reasonable latitude in how this explanation must be worded,
formatted and displayed, the CMLS shall have the authority to
determine if a web site containing IDX Data is in compliance
with the intent of this regulation. As a “safe harbor”,
the following disclosure language, appearing alongside an “IDX
Detail Logo” that is at least 105 pixels wide by 35 pixels high
will satisfy this requirement:
“The data relating to real estate for sale on this web site
comes in part from the Internet Data Exchange Program of the
Consolidated Multiple Listing Service, Inc. Real estate
listings held by brokerage firms other than [insert your firm’s
name here] are marked with either the “IDX Detail Logo” or the
“IDX Thumbnail Logo” (a little black house surrounding the
letters “IDX”) and detailed information about them includes the
name of the listing broker.”
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See Appendix D of this document for
a reproduction of the “IDX Detail Logo”, a sample of an
appropriate usage of the logo and a disclosure statement that
meets the requirement of this section.
Note that this disclosure must appear
on the FIRST page on which any listing Data is displayed.
Note: Both the “IDX Detail Logo” and the
“IDX Thumbnail Logo” are available for download from CMLS web
site at
www.ct-mls.com. |
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Section 8.10 Identifying IDX Listings
on Thumbnail Displays: Any search result
identifying another IDXS’ listing in a brief or "thumbnail"
format shall clearly identify each listing coming from IDX
Data. While the CMLS allows reasonable latitude in how this
identification must be displayed, the CMLS shall have the
authority to determine if the identification is in compliance
with the intent of this regulation. As a “safe harbor”,
including an “IDX Detail Logo” (at least 105 pixels wide by 35
pixels high) or the “IDX Thumbnail Logo” (at least 35 pixels
wide by 35 pixels high) immediately adjacent to the property
information to identify the listing, as a CMLS IDX listing will
satisfy this requirement.
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See Appendix D of this document for
a sample of a brief or thumbnail listing using the “IDX
Thumbnail Logo” that meets “safe harbor” requirements.
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Section 8.11 Limitation on Data
Allowed in Thumbnail Displays:
(1.) A thumbnail display of another IDXS’
listing may include no more than two horizontal lines of text
and/or a single photograph no more than 150 pixels high along
with “buttons” providing links for additional information.
(2.) A thumbnail display of another IDXS’ listing may not
include any contact information or branding of the IDXS who owns
the web site or any of its agents. (3.) A thumbnail display of
another IDXS’ listing must also meet the requirements set out in
Section 8.10 of these Rules and Regulations.
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The CMLS interprets a thumbnail display as
being no more than two horizontal lines of text and/or a single
photograph no more than 150 pixels high. Displays of more text,
larger photos or multiple photos are considered “Detailed”
displays and must meet the requirements of Section 8.12 of the
Rules and Regulations.
The provision relating to “contact
information or branding” prevents office and agent information
of the web-site-owning IDXS from appearing on another IDXS’
listings.
“Branding” refers to any marks or language
referring to the web-site-owning IDXS repeated in the thumbnail
display of another IDXS’ listing. Any association of such
information or branding with the listing data is a violation of
this rule.
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Section 8.12 Limitation on Data
Allowed in Detailed Displays:
(1.) A search result producing a detailed
display of another IDXS’ listing shall bear that IDXS’ name, the
“IDX Detail Logo”, and the CMLS Copyright Notice (either Option
A or B) immediately following the property information.
Option A: “Copyright nnnn
Consolidated Multiple Listing Service, Inc. All rights
reserved.” [Where nnnn is the current year.]
Option B:
“Ó
nnnn Consolidated Multiple Listing Service, Inc. All rights
reserved.” [Where nnnn is the current year.]
Note, you may not substitute a “c” in
parentheses – “(c)” – for the copyright symbol – “©.” If your
web site cannot display the copyright symbol, you must use
Option A and spell out the word “Copyright.”
(2.) A detailed display of another IDXS’
listing may not include any contact information or branding of
the IDXS who owns the web site or any of it’s agents within the
“body” of the listing data. The “body” is defined as an
imaginary rectangular box whose borders are delimited by the
utmost extent in each direction of the listing text and photo
data.
(3.) Any search result identifying another
IDXS’ listing shall include the disclaimer that conveys the
essence of the following terminology: “Information Deemed
Reliable But Not Guaranteed.”
(4.) The Listing’s IDXS name and CMLS
Copyright Notice shall be at least as large as the largest type
size used to display the listing data. The CMLS Copyright Notice
must appear exactly as in one of these two options listed above.
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The CMLS interprets any display containing
more than two horizontal lines of text display or displaying
more than a single photo of more than 150 pixels height as being
a detailed display.
The “IDX Detail Logo” is available for
download from CMLS’ web site at
www.ct-mls.com.
(2.) The prohibition on branding or
contact information within the “body” of the listing data is
intended to prevent any possible confusion on the part of the
consumer as to the source of the listing.
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Section 8.13 Identification and
Control of IDXS Web Sites: Any Internet web
site used for publication of the IDX Data or any portion thereof
must be controlled by a single IDXS and advertised as that IDXS’
Internet web site.
Nothing presented on a web site containing
IDX Data should jeopardize the goodwill of the CMLS or the
listing broker. |
This is an important limitation on third
parties who develop, build, host or maintain IDX sites for
brokers. In order to participate in IDX, a site must be
marketed and branded as a broker's site. Consider this
scenario: A company, "GopherRealtyOnline.com" (GRO) provides
promotional services for brokers. You and two other brokers are
IDXSs and you all want GRO to build your web sites. It does
so. So long as the web sites are most prominently identified
with the individual brokerage firms, it's fine for GRO to have a
notice at the bottom of every page that says "Powered by
GopherRealtyOnline.com." But GRO must not "brand" any of these
web sites in such a way as to suggest that GRO controls it. For
example, a big banner across the top of the page with GRO’s name
is a problem, even if it identifies your brokerage underneath.
Obviously web sites containing IDX Data
should never jeopardize the goodwill of the CMLS or other IDXSs.
For example, advertising an obscene web site on a web site
containing IDX Data would cause termination of the IDX Data
feed..
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Section 8.14 Requirement of an IDXS
to Avoid “Scraping”: An IDXS displaying IDX Data
or any portion thereof shall make reasonable efforts to avoid
"scraping" of the data by third parties or displaying of that
data on any other web site. Reasonable efforts shall include but
not be limited to:
(a.) Monitoring the web site for
signs that a third party is “scraping” data and
(b.) Prominently posting notice that any use of search
facilities of data on the site, other than by a consumer looking
to purchase real state, is prohibited.
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“Scraping” is a term used to describe the
unauthorized obtaining of significant amounts of data from a web
site.
This section places a burden on you and
your web site host to monitor your web site. If it appears that
a large number of hits is coming from a particular domain on the
web and that these hits may be the result of an automated
process designed to gather or "scrape" data from your web site
for use somewhere else, you must notify the CMLS. |
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Section 8.15 Limitation on the Use of
the Internet Data Exchange Database: No portion of the
IDX Data shall be used by, or provided to, anyone other than
consumers desiring to purchase real estate. This restriction,
together with a restriction on the reproduction of IDX Data,
shall be included in the “Terms and Conditions of Use Agreement”
for all IDXS web sites. |
This section expressly prohibits
distribution of the IDX Data or any portion of it for ANY
purpose other than those expressly permitted by the CMLS Rules
and Regulations. This includes distribution to other IDXSs. In
other words, a brokerage firm cannot sell or give access to the
IDX Data to other brokers or any other businesses, whether or
not they are participants in the CMLS.
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Section 8.16 Displaying a “Terms
and Conditions of Use Agreement”
Any Internet web site used for publication of IDX Data or
any portion thereof must include a “Terms and Conditions of Use
Agreement” accessible either directly on or as a hyperlink from
the first page on which listing data is displayed. As a
minimum, the “Terms and Conditions of Use Agreement” shall
incorporate the language included in the sample “Terms and
Conditions of Use Agreement” in “Section 8.1.4 of the IDX Broker
informational packet & technical documentation”.
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The “Terms and Conditions of Use Agreement”
helps insure use of IDX data is limited to its intended
purposes. |
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Section 8.17 Requirement To Have All
Agreements With Third Party Web Site Designers and Developers in
Writing: Any IDXS using a third party to develop,
design, host or maintain its web site must have that third party
fully execute the standard “Agreement to Access the Internet
Data Exchange Data Feed” contract as provided by the CMLS.
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The CMLS requires that third parties
desiring to gain access to the IDX Data sign the standard
“Agreement to Access the Internet Data Exchange Data Feed”
contract attached to this document. Providing a CMLS password to
an unauthorized recipient is a serious violation of the CMLS’
Rules and Regulations, punishable by a fine and possible
interruption of MLS privileges. |
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Section 8.18 Requirement to Cure
Violations: An IDXS must make any and all changes to
their Internet site necessary to cure a violation of CMLS Rules
and Regulations within five business days of notice from CMLS of
a violation. If an IDXS fails to comply with this requirement
the CMLS reserves the right to discontinue the IDXS’ IDX Data
feed, without any further notice. The IDXS may also be subject
to fines from the CMLS.
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You must make corrections to your web site
if CMLS determines that it is in violation on some point. The
CMLS reserves the right to discontinue the data feed you receive
without further notice if you do not comply with this
requirement. You may also be subject to fines from the CMLS. |
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