Boulder County property record for 1860 23rd St, Boulder, CO 80302
| Property Type | Single Family Home |
|---|---|
| Details | 1 bd · 2 ba · 1,005 sqft · built 1910 |
| Lot Size | 0.105 acres (4,591 sqft) |
| Owner | 2 Trust Names on File |
| Last Sale | $650,000 (Feb 2025) |
| Tax Bill | $5,134 (2025) |
| Flood Zone | Zone X (moderate risk) |
| APN | 1463-30-4-33-016 |
| Primary APN | 1463-30-4-33-016 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 1 Bed |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 4 Rooms |
| Stories | 1 Story |
| Building Area | 1,005 sqft Living Area |
| 1st Floor Area | 1,005 sqft |
| Interior Walls | Plaster |
| Year Built | Built 1910 |
|---|---|
| Effective Year Built | Effective 1960 |
| Architectural Style | Ranch |
| Exterior Material | Wood Shingle |
| Construction Type | Frame |
| Roof Material | Asphalt |
| Lot Area | 4,591 sqft (0.105 acres) |
| Porch | Porch |
| Porch Area | 77 sqft |
| Total Buildings | 2 Buildings |
| Heating System | Forced Air with A/C |
|---|
| Account Number | R0007096 |
|---|---|
| Street Address | 1860 23RD ST |
| City | BOULDER |
| State | CO |
| Zip | 80302-5647 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | S 1/2 LOT 11 BLK A BOULDER EAST O T |
| Legal Range | 70 |
| Legal Township | 1N |
| Legal Section | 30 |
| Legal Subdivision | BOULDER O T EAST & WEST & NORTH - BO |
| Legal Block | A |
| Legal Lot Number | 11 |
| Jurisdiction | BOULDER CO |
| Township / Civil Division | BOULDER |
| Census Block Group | 2 |
| Census Block | 2012 |
| Census Tract | 12205 |
1860 23rd St is held in a trust since February 2025.
Source: Boulder County records, as of September 18, 2026
| Owner of Record | 2 Trust Names on File |
|---|---|
| Mailing Address | 6940 N 63RD ST, LONGMONT, CO 80503-8852 |
| Owner Type | Company |
| Vesting | Trust |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Feb 18, 2025 · Amount on File |
| Deed Sale | Feb 18, 2025 · Amount on File |
| Prior Sale | Aug 18, 1981 · Amount on File |
| Deed Document Number | 20254076260 |
| Prior Transfer Date | Feb 1, 2014 |
| Prior Transfer Doc | 0003364906 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 1860 23rd St was $5,134.
Source: Boulder County assessment roll, as of September 18, 2026
| Type | Name |
|---|---|
| State | Colorado |
| County | Boulder County |
| Municipality | Boulder City |
| Unified School District | Boulder Valley School District RE-2 (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $44,567 (-17.24%) Land $39,634 Building $4,933 | $725,400 (-15.81%) Land $652,860 Building $72,540 | |
| 2025 | $5,134.00 | $53,851 Land $46,888 Building $6,963 | $861,600 Land $750,200 Building $111,400 |
| 2023 | $4,201.00 (+24.96%) | $59,033 (+36.78%) Land $53,130 Building $5,903 | $881,100 (+41.88%) Land $792,990 Building $88,110 |
| 2022 | $3,362.00 | $43,160 Land $38,844 Building $4,316 | $621,000 Land $558,900 Building $62,100 |
Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.
FEMA maps place 1860 23rd St in Zone X, an area of moderate flood risk, within 100 ft of a high-risk flood zone.
Source: FEMA National Flood Hazard Layer, effective October 14, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone X moderate risk |
|---|---|
| 500-Year Floodplain | Yes 0.2% annual chance |
| Nearest Special Flood Hazard Area | Zone AE, within 100 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Flood Insurance Cost | Premium on File median of 31 individual policies |
| Community Rating System | Class 5 (25% premium discount) |
| Nearby Flood Policies | 64 units insured incl. 33 condo units |
| Nearby Flood Claims | 6 (2013) |
| Claims Outside the SFHA | 2 of 6 |
| Most Recent Claim | Sep 2013 · Severe Storms, Flooding, Landslides, And Mudslides |
| Claims by Event |
|
Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.
The area around 1860 23rd St has no burnable land within ember reach, so its wildfire risk is not rated.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Not rated no burnable land within ember reach |
|---|
Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.
Source: EPA Safe Drinking Water Information System, as of September 2026
| Water System | CITY OF BOULDER serves 166,080 people · EPA ID CO0107152 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Sep 2024 |
| Lead | 2 ppb (2023–2025) action level 15 ppb |
| Water Quality | Haloacetic acids resolved · Jul 2017 |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | 1 last 3 years |
Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes.
Source: FCC Broadband Data Collection, based on 663 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Ayva Networks Fixed Wireless | 2,500 / 2,500 |
| CenturyLink Fiber · DSL in parts of the area | 2,000 / 1,000 |
| Xfinity Cable | 2,000 / 250 |
| Verizon Fixed Wireless | 300 / 20 |
| LiveWireNet Fixed Wireless | 250 / 100 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: AT&T.
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