Boulder County property record for 1017 23rd Ave, Longmont, CO 80501
| Property Type | Multi-Family Dwellings |
|---|---|
| Details | 4 bd · 2 ba · 2,016 sqft · built 1975 |
| Lot Size | 0.228 acres (9,925 sqft) |
| Owner | Individual Name on File |
| Last Sale | $224,590 (Mar 2007) |
| Tax Bill | $3,695 (2025) |
| Deeds & Mortgages | Oct 2020 Transfer |
| Flood Zone | Zone X (minimal risk) |
| APN | 1205-27-2-09-003 |
| Primary APN | 1205-27-2-09-003 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 8 Rooms |
| Units | 2 Units |
| Stories | 2 Stories |
| Building Area | 2,016 sqft Living Area |
| Gross Area | 3,596 sqft |
| 1st Floor Area | 1,008 sqft |
| Upper Floors Area | 1,008 sqft |
| Basement Area | 1,008 sqft |
| Interior Walls | Wallboard/Drywall |
| Year Built | Built 1975 |
|---|---|
| Effective Year Built | Effective 1975 |
| Exterior Material | Brick Veneer |
| Construction Type | Masonry / Concrete Block |
| Lot Area | 9,925 sqft (0.228 acres) |
| Garage Type | Attached |
| Garage Area | 572 sqft |
| Porch | Porch |
| Porch Area | 104 sqft |
| Patio Area | 260 sqft |
| Heating System | Hot Water |
|---|
| Account Number | R0066858 |
|---|---|
| Street Address | 1017 23RD AVE |
| City | LONGMONT |
| State | CO |
| Zip | 80501-1111 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Multi-Family Dwellings |
| Legal Description | LOT 15 BLK 3 HORIZON PARKWAY REPLAT B |
| Legal Range | 69 |
| Legal Township | 3N |
| Legal Section | 27 |
| Legal Subdivision | HORIZON PARKWAY REPLT B - LG |
| Legal Block | 3 |
| Legal Lot Number | 15 |
| Jurisdiction | BOULDER CO |
| Township / Civil Division | LONGMONT |
| Census Block Group | 1 |
| Census Block | 1023 |
| Census Tract | 13306 |
1017 23rd Ave, a residential property, is owned by an individual who acquired it in September 2020.
Source: Boulder County records, as of September 18, 2026
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 837 WINDFLOWER DR, LONGMONT, CO 80504-2683 |
| Owner Type | Individual |
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 | Name on Deed |
|---|---|
| Last Sale | Mar 16, 2007 · Amount on File |
| Deed Sale | Mar 16, 2007 · Amount on File |
| Deed Document Number | 20072842731 |
| Last Transfer Date | Sep 23, 2020 |
| Transfer Doc | 0003825377 |
| Record Updated | Oct 29, 2026 |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | BOULDER CO |
| Recording Date | Oct 20, 2020 |
| Property Address | 1017 23RD AVE, LONGMONT, CO 80501-1111 |
| Document Number | 0003825377 |
| Instrument Date | Sep 23, 2020 |
| Instrument | 3825377 |
| Transaction Type | Transfer |
| Record Updated | Nov 5, 2020 |
| Title Company | NOT AVAILABLE |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 837 WINDFLOWER DR LONGMONT CO 805042683, LONGMONT, CO 80504-2683 |
The 2025 property tax bill for 1017 23rd Ave was $3,695.
Source: Boulder County assessment roll, as of September 18, 2026
| Type | Name |
|---|---|
| State | Colorado |
| County | Boulder County |
| Municipality | Longmont City |
| Unified School District | St. Vrain Valley School District RE 1J (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $34,468 (-2.08%) Land $3,385 Building $31,083 | $563,200 (-) Land $106,100 Building $457,100 | |
| 2025 | $3,695.00 | $35,200 Land $6,631 Building $28,569 | $563,200 Land $106,100 Building $457,100 |
| 2023 | $3,286.00 (+15.26%) | $38,519 (+33.66%) Land $7,471 Building $31,048 | $574,900 (+35.65%) Land $111,500 Building $463,400 |
| 2022 | $2,851.00 | $28,819 Land $5,379 Building $23,440 | $423,800 Land $79,100 Building $344,700 |
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 1017 23rd Ave in Zone X, an area of minimal flood risk.
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 minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Community Rating System | Class 5 (25% premium discount) |
| Nearby Flood Policies | 2 in force |
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 1017 23rd Ave 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 LONGMONT serves 104,178 people · EPA ID CO0107485 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Sep 2025 |
| Lead | 2 ppb (2023–2025) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | None 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 358 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| NextLight Fiber | 10,000 / 10,000 |
| Xfinity Cable | 2,000 / 250 |
| Verizon Fixed Wireless | 300 / 20 |
| CenturyLink DSL | 140 / 20 |
May also be available: T-Mobile.
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