Resolve any MLS listing to its building.
Pass a listing's address and get its pre-construction project back — canonical address, match method and a confidence score. We reconcile the messy MLS address variants so you don't have to, against a dataset that profiles buildings back to the 1960s.
Included on Pro & Elite · free sandbox for testing.
$ curl "https://api.redbricks.dev/api/v1/building-links?address=89 Church" \
-H "Authorization: Bearer $KEY"
// 200 OK — resolved to its pre-construction project
{
"data": [
{
"project_id": 1144,
"project_name": "The Saint Condos",
"canonical_mls_address": "89 Church Street",
"match_method": "auto",
"match_confidence": 0.98
}
]
}Every condo listing lives in isolation.
On most sites, 11 Yorkville #2104 and 11 Yorkville #2910 are just two unrelated pages. No shared building. No idea what else is for sale, for lease, in development, or recently sold in the same tower.
From a messy address to a known building.
One call turns a raw MLS address into the resolved project, a canonical address and a confidence score — no cross-database joins, no manual stitching.
Resolved project
The matched project_id and name — your join key into the full Red Bricks dataset (floor plans, documents, pricing).
Canonical address
One clean, canonical MLS address — every abbreviation, unit suffix and typo reconciled to it.
Confidence score
Auto or human-verified, with a 0–1 confidence you can threshold on before you trust a match.
Geo coordinates
Latitude / longitude for the building, so you can map, cluster or de-duplicate listings.
Tying a listing to the right building requires already having the building — every one, going back decades. Our profiles span new towers and 1960s buildings alike, which is why the mapping is accurate and complete instead of best-effort.
Send a listing. Get its whole building back.
Send an address
GET /api/v1/building-links?address=… — the listing’s own address string, abbreviations and all.
We reconcile it
We match it against 6,000+ buildings — auto or human-verified — even for towers built decades ago, and return the canonical address.
Get the building + confidence
Back comes the resolved project_id, canonical MLS address, match method and a confidence score you can threshold on.
The same response, rendered live.
rbOS showing The Saint Condos as one profile in production: For Sale $1,199/sqft, Developer $1,428/sqft, For Rent $4.28/sqft — every layer of the building, one place.
For anyone who wants to own the building, not the page.
Become the source of truth for every building.
Free API key, no credit card. Building Links is included on Pro & Elite.