Boulder County property record for 357 3rd Ave, Niwot, CO 80544
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 2,560 sqft · built 1984 |
| Lot Size | 0.164 acres (7,129 sqft) |
| Owner | Individual Name on Record |
| Last Sale | $197,000 (Jul 1996) |
| Tax Bill | $4,311 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 1317-25-4-09-004 |
| Primary APN | 1317-25-4-09-004 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 5 Rooms |
| Building Area | 2,560 sqft Living Area |
| 1st Floor Area | 1,600 sqft |
| Upper Floors Area | 960 sqft |
| Interior Walls | Wallboard/Drywall |
| Year Built | Built 1984 |
|---|---|
| Effective Year Built | Effective 1984 |
| Architectural Style | A-Frame |
| Exterior Material | Wood Shingle |
| Construction Type | Frame |
| Lot Area | 7,129 sqft (0.164 acres) |
| Deck Area | 280 sqft |
| Heating System | Forced Air with A/C |
|---|
| Account Number | R0056610 |
|---|---|
| Street Address | 357 3RD AVE |
| City | LOUISVILLE |
| State | CO |
| Zip | 80027 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | RCII |
| Legal Description | LOTS 9-10 BLK 26 NIWOT |
| Legal Range | 70 |
| Legal Township | 2N |
| Legal Section | 25 |
| Legal Subdivision | NIWOT - NI |
| Legal Block | 26 |
| Legal Lot Number | 9 |
| Jurisdiction | BOULDER CO |
| Township / Civil Division | LONGMONT |
| Census Block Group | 1 |
| Census Block | 1006 |
| Census Tract | 13205 |
Source: Boulder County records, as of June 15, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | Individual Name on Record |
|---|---|
| Mailing Address | PO BOX 882, NIWOT, CO 80544-0882 |
| Owner Type | Individual |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Jul 31, 1996 · Amount on Record |
| Deed Sale | Jul 31, 1996 · Amount on Record |
| Prior Sale | Mar 12, 1987 · Amount on Record |
| Deed Document Number | 19961629845 |
| Record Updated | Sep 20, 2026 |
Source: Boulder County assessment roll, as of June 15, 2026
| Type | Name |
|---|---|
| State | Colorado |
| County | Boulder County |
| Unified School District | St. Vrain Valley School District RE 1J (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $49,796 (+8.8%) Land $17,408 Building $32,388 | $732,300 (-) Land $256,000 Building $476,300 | |
| 2025 | $4,311.00 (+3.31%) | $45,769 (-1.14%) Land $16,000 Building $29,769 | $732,300 (+5.98%) Land $256,000 Building $476,300 |
| 2023 | $4,173.00 (+8.59%) | $46,297 (+23.66%) Land $14,820 Building $31,477 | $691,000 (+28.27%) Land $221,200 Building $469,800 |
| 2022 | $3,843.00 | $37,440 Land $13,351 Building $24,089 | $538,700 Land $192,100 Building $346,600 |
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.
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 | 7 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.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 95% of the US · lower than 98.1% of Colorado |
|---|---|
| Wildfire Likelihood | 0.04% annual chance |
| Exposure | Direct burnable vegetation |
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 | LEFT HAND WD serves 20,280 people · EPA ID CO0107471 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Jun 2022 |
| Lead | 1 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 251 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Ayva Networks Fixed Wireless | 2,500 / 2,500 |
| Xfinity Cable | 2,000 / 250 |
| Verizon Fixed Wireless | 300 / 20 |
May also be available: AT&T, LiveWireNet.
5G (outdoors only) and 4G LTE
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