Weld County, CO
Online RealAuction lien sale — new investors register Oct 9 to Oct 31 at 2 p.m.
Weld County's next tax lien sale is November 5, 2026, held online through RealAuction at weld.coloradotaxsale.com. New investor registration opens October 9 at 8 a.m. and closes October 31 at 2 p.m. Registering means completing an IRS W-9, setting up ACH depository details and accepting a 'buyer beware' document; the ACH authorization is what lets you deposit at least 10% of what you plan to spend on liens and then pay for the ones you win. Three weeks before the sale, the list of properties that could go to sale is posted on RealAuction and updated daily until sale day. The county also asks new investors to return its own investor registration form to the Treasurer's Office.
Each lien is the sum of the taxes, delinquent interest, advertising, internet auction and certificate fees, and successful bidders generally pay a premium on top. Interest is paid on the lien, not on the premium, and is set each September 1 at nine points above the federal discount rate, rounded up. The owner can redeem at any time after the sale and up to the issuance of a treasurer's deed; after holding a certificate for three years, redeeming any junior lienors and paying an application fee, a holder can take the property to a public treasurer's deed auction. Weld spells out the newer limit plainly: tax lien certificates issued after January 1, 2026 expire after seven years. Redemption money goes out by ACH every Friday for the previous week's redemptions, with a certificate of redemption sent by email. Under C.R.S. 39-11-151, county officials, employees and their immediate families can't buy liens.
Colorado rules at a glance
Colorado's rate is nine points above the federal discount rate, set each September 1 by the State Bank Commissioner (C.R.S. 39-12-103): 13% for liens sold from October 1, 2026. Bidders compete on a premium that goes to the county and earns no interest (C.R.S. 39-11-115). From August 1 of the third calendar year after the sale the holder can apply for a treasurer's deed, which now means a public auction (C.R.S. art. 11.5); the owner can redeem until seven days before it.
The statute, the bidding and what goes wrong for new buyers are on the Colorado page; every sale date we have sourced for Weld County is on the Weld County page.
Property & tax profile
The median homeowner in Weld County pays $2,440 a year in property tax — below the Colorado median of $2,602 (U.S.: $3,119). That is roughly what a typical home here owes after one missed year — about the face value of a one-year certificate, before interest, fees and any premium. Homes with a mortgage pay a median of $2,596; homes owned outright, $1,963.
On a home with a mortgage, the lender has its own reason to pay a delinquent tax bill: the tax lien outranks the mortgage, and a tax deed can wipe out the loan. On a home owned outright, nobody but the owner — or the heirs — has that reason. In Weld County, 26.1% of owner-occupied homes are owned outright (Colorado: 30.6%, U.S.: 39.4%). That is less than the state as a whole: more of the delinquent bills here sit on mortgaged homes, where the lender often steps in.
4.1% of all housing units in Weld County are vacant. The figure that matters for a lien buyer is the Census “other vacant” category — not for rent, not for sale, not a holiday home, but a catch-all that includes foreclosures, homes held up by legal proceedings or family reasons, homes needing repairs, and abandoned ones. Here it is 0.9% of all units (Colorado: 1.7%, U.S.: 3.6%). That is below the state rate: fewer empty properties on the list than elsewhere in Colorado.
Half of the homes in Weld County were built in or before 2001 (Colorado: in or before 1988) — newer than most of the state. The typical tax bill is 2.5% of the median household income of $97,097 (Colorado: 2.7%).
Source: U.S. Census Bureau, American Community Survey 2020-2024 5-year estimates (tables B25077, B25103, B25081, B25002, B25004, B25035, B19013) — see the figures on data.census.gov. Survey estimates with margins of error; anything too uncertain to state is left out.
Before you bid: The treasurer tries to withhold problem liens, but describes this as a 'buyer beware' sale — check each parcel through the auction site's property details. Auction mechanics go to RealAuction (1-877-361-7325, [email protected]); everything else to the Weld County Treasurer at (970) 400-3290.
Official source: weld.gov — checked October 4, 2026
More sales: 38 other county sales are on the calendar in November 2026 — see them by date; or the upcoming sales in Colorado.
This page reflects publicly posted county auction notices as of publication and is general information, not financial or legal advice. Sale details can change — always confirm current terms with the county directly.