Commercial mortgage rate data: API, embed and downloads

Downloads

Both files are rebuilt every time the site is, from the same numbers the rates page shows. The index value in each row carries its own observation date, and each spread carries the date its source applies to. Indications, not quotes.

A machine-readable list of both files, with sources and column descriptions, is at /data/downloads/manifest.json.
Dataset	Rows	As of	Files
Commercial mortgage spreads and indicative rates by lender type	5	October 23, 2026	CSV · JSON
Permanent loan spreads over the 10-year Treasury by property type	8	March 31, 2026	CSV · JSON

Commercial mortgage spreads and indicative rates by lender type

Source: Index: U.S. Treasury, Federal Reserve Bank of New York. Spreads: Northmarq, ACLI via Nassau CorAmerica, CRED iQ, mortgage REIT 10-Qs (see spread_sources per row). Every spread source, with links

Column	What it holds
`lender_type`	Short id of the lender type
`lender_name`	Lender type
`index_id`	Series id of the index this lender type prices over (same ids as /api/live)
`index_label`	Index name
`index_pct`	Index value in percent on index_date
`index_date`	Observation date of the index value
`spread_lo_bps`	Low end of the published spread range, basis points (blank: no public source)
`spread_hi_bps`	High end of the published spread range, basis points
`indicative_lo_pct`	index_pct plus spread_lo_bps, percent
`indicative_hi_pct`	index_pct plus spread_hi_bps, percent
`spread_sources`	Who published the spread range
`spread_source_urls`	Links to those publications, space separated
`spread_as_of`	Date each spread source applies to

Permanent loan spreads over the 10-year Treasury by property type

Source: CRED iQ, CRE loan spreads by property type. Read the CRED iQ report

Column	What it holds
`property_type`	Short id of the property type
`property_name`	Property type
`spread_bps`	Spread over the 10-year Treasury on 60 to 65% LTV permanent loans, basis points (blank: no public source)
`index_id`	Always UST10
`index_pct`	10-year Treasury yield in percent on index_date
`index_date`	Observation date of the 10-year yield
`indicative_pct`	index_pct plus spread_bps, percent
`spread_source`	Who measured the spread
`spread_source_url`	Link to the publication
`spread_as_of`	Date the spread applies to

Live rate API

Two endpoints, both JSON, both read from the same database the site's rate board uses. It's refreshed on a schedule from Treasury's daily par yield curve, the New York Fed and the Federal Reserve's H.15 release, and every value comes back with its observation date and a freshness status.

Endpoint	Returns
`GET /api/live?ids=UST10,SOFR`	Any of the portfolio's series by id (Treasury par curve `UST1M` to `UST30`, `SOFR`, `SOFR30`, `EFFR`, `PRIME`, `PMMS30` and more), with a week-ago and month-ago point, the publisher and link. Add `&history=60` for 60 days of daily values. Open to cross-origin calls, cached about 15 minutes.
`GET /api/rates`	The six series this site prices from (`UST5,UST7,UST10,SOFR,SOFR30,PRIME`): latest value, date and week-ago value. Same-origin use; it's what the pages here call.

status is fresh, stale (past the publisher's normal delay), dead (too old to show, so value is null) or empty. Abridged response:

{
  "ok": true,
  "series": {
    "UST10": {
      "label": "10-year Treasury",
      "unit": "%",
      "cadence": "daily",
      "status": "fresh",
      "date": "2026-10-23",
      "value": 5,
      "week": {
        "date": "2026-10-16",
        "value": 5.09
      },
      "source": "U.S. Department of the Treasury, Daily Treasury Par Yield Curve Rates",
      ...
    }
  }
}

Embed the rate ticker

Paste this where you want the ticker. It's server-rendered HTML with no script and no cookies, credits each publisher, and links back here. Change ids to any series above (up to eight) and add &theme=dark for a dark background.

<iframe src="https://commercial.mortgage/embed/rates?ids=UST10,SOFR" width="100%" height="150" style="border:0" title="Rates from Commercial.Mortgage" loading="lazy"></iframe>

What it looks like right now:

License

The underlying Treasury and Federal Reserve data are U.S. government works in the public domain. This site's compilation (the tables, the spread ranges matched to indexes, the files above) is offered under Creative Commons Attribution 4.0 (CC-BY-4.0). Credit it as "Data: Commercial.Mortgage (commercial.mortgage)" with a link to this site.

Publisher terms still apply where a publisher sets them. SOFR and the other New York Fed rates carry its notice: © 2026 Federal Reserve Bank of New York. Content from the New York Fed subject to the Terms of Use at newyorkfed.org. This site is not affiliated with the New York Fed. The spread ranges are facts reported by the sources named in each row; cite them too if you republish a range.

No warranty: the data can be late or wrong, and none of it is an offer to lend. For commercial API access, higher call volumes or a bulk license, write to desk@janover.co.

Rate data, API and embed