Boulder County property record for 4170 Riverside Ave, Boulder, CO 80304 · Last verified June 2026
| Property Type | Single Family Home |
|---|---|
| Details | 2 bd · 2 ba · 1,152 sqft · built 1983 |
| Lot Size | 0.088 acres (3,819 sqft) |
| Owner | Individual Name on File |
| Tax Bill | $5,881 (2025) |
| Deeds & Mortgages | Jun 2023 Line of Credit Dec 2017 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 1463-18-3-25-016 |
| Primary APN | 1463-18-3-25-016 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 6 Rooms |
| Stories | 2 Stories |
| Building Area | 1,152 sqft Living Area |
| Gross Area | 1,728 sqft |
| 1st Floor Area | 576 sqft |
| Upper Floors Area | 576 sqft |
| Basement Area | 576 sqft |
| Interior Walls | Wallboard/Drywall |
| Year Built | Built 1983 |
|---|---|
| Effective Year Built | Effective 1983 |
| Architectural Style | A-Frame |
| Exterior Material | Wood Shingle |
| Construction Type | Frame |
| Lot Area | 3,819 sqft (0.088 acres) |
| Lot Dimensions | 17 ft deep x 11 ft wide |
| Garage Type | Detached |
| Garage Area | 200 sqft |
| Parking Spaces | 1 Parking Space |
| Porch | Porch |
| Porch Area | 108 sqft |
| Deck Area | 128 sqft |
| Heating System | Forced Air with A/C |
|---|
| Account Number | R0087565 |
|---|---|
| Street Address | 4170 RIVERSIDE AVE |
| City | BOULDER |
| State | CO |
| Zip | 80304-1128 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT 16 WILDWOOD & 1407.93 SQ FT OF OUTLOT B WILDWOOD .03 ACS M/L LESS SLY 11X17 TO LOT 17 |
| Legal Range | 70 |
| Legal Township | 1N |
| Legal Section | 18 |
| Legal Subdivision | WILDWOOD & REPLT A - BO |
| Legal Block | 3 |
| Legal Lot Number | 16 |
| Jurisdiction | BOULDER CO |
| Township / Civil Division | BOULDER |
| Census Block Group | 3 |
| Census Block | 3002 |
| Census Tract | 12105 |
Source: Boulder County records · APN 1463-18-3-25-016
Assessment roll updated June 15, 2026 · Last verified June 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 File |
|---|---|
| Mailing Address | 15532 WILLOW ST, THORNTON, CO 80602-4405 |
| Owner Type | Individual |
| Vesting | Married |
| Date | Document |
|---|---|
| Jun 20, 2023 | Deed of Trust, Mortgage · Line of Credit CREDIT UNION OF COLORADO |
| Dec 12, 2017 | Deed of Trust, Mortgage · Conventional Mortgage CHERRY CREEK MORTGAGE CO INC |
| Deed Names | Verified Name on Deed |
|---|---|
| Last Sale | Dec 30, 1983 |
| Deed Sale | Dec 30, 1983 |
| Prior Sale | Apr 26, 1983 · Amount on Record |
| Deed Document Number | 1983596187 |
| Last Transfer Date | Apr 08, 2024 |
| Transfer Doc | 0004045191 |
| Record Updated | Sep 20, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | BOULDER CO |
| Property Address | 4170 RIVERSIDE AVE, BOULDER, CO 80304-1128 |
| Transaction Type | Mortgage |
| Record Updated | Jul 12, 2023 |
| Name | Verified Name |
|---|
| Document Number | 0004011284 |
|---|---|
| Date | Jun 20, 2023 |
| Instrument | 4011284 |
| Name | CREDIT UNION OF COLORADO |
|---|---|
| Type | Credit Union |
| Address | DENVER, CO 80238 |
| Type | Line of Credit |
|---|---|
| Amount | Amount Recorded |
| Term | 300 Months |
| Due | Jun 19, 2048 |
| Rate Type | Adjustable Rate |
|---|---|
| Change Frequency | Monthly |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | BOULDER CO |
| Property Address | 4170 RIVERSIDE AVE, BOULDER, CO 80304-1128 |
| Transaction Type | Mortgage |
| Record Updated | Feb 05, 2021 |
| Name | Verified Name |
|---|
| Document Number | 0003630400 |
|---|---|
| Date | Dec 12, 2017 |
| Instrument | 3630400 |
| Name | CHERRY CREEK MORTGAGE CO INC |
|---|---|
| Type | Mortgage Company |
| Address | ENGLEWOOD, CO 80111 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Jan 01, 2048 |
Source: Boulder County records · Assessment roll updated June 15, 2026 · Last verified June 2026
| Type | Name |
|---|---|
| State | Colorado |
| County | Boulder County |
| Municipality | Boulder City |
| Unified School District | Boulder Valley School District RE-2 (PK - 12) |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $66,191 (+8.8%) Land $34,768 Building $31,423 | $973,400 (-) Land $511,300 Building $462,100 | |
| 2025 | $5,881.00 (+1.29%) | $60,837 (-13.15%) Land $31,956 Building $28,881 | $973,400 (-6.9%) Land $511,300 Building $462,100 |
| 2023 | $5,806.00 (+12.72%) | $70,049 (+28.13%) Land $33,688 Building $36,361 | $1,045,500 (+32.91%) Land $502,800 Building $542,700 |
| 2022 | $5,151.00 | $54,669 Land $27,383 Building $27,286 | $786,600 Land $394,000 Building $392,600 |
Source: FEMA National Flood Hazard Layer, Boulder County (08013C), updated October 14, 2026 · FEMA OpenFEMA NFIP redacted claims and policies, census block group 080130121053, refreshed September 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026
| FEMA Flood Zone | Zone X |
|---|---|
| Special Flood Hazard Area | No |
| Flood Hazard | Minimal |
| 500-Year Floodplain | No |
| Nearest Special Flood Hazard Area | Zone AE, within 100 ft |
| Flood Insurance Cost | Premium on Record median of 32 individual NFIP policies nearby |
| Community Rating System | Class 5 (25% premium discount) |
| Nearby Flood Policies | 32 in force |
| Nearby Flood Claims | 26 (2005–2015) |
| Claims Outside the SFHA | 10 of 26 |
| Most Recent Claim | May 2015, rainfall accumulation, Severe Storms, Tornadoes, Flooding, Landslides, And Mudslides |
| Claims By Storm |
|
| Wildfire Risk | Moderate above 47% of the US · above 30% of Colorado |
|---|---|
| Wildfire Likelihood | About 1 in 1,136 per year |
| Exposure | Indirect within ember reach |
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: FCC Broadband Data Collection, availability as of December 31, 2025 · Published October 2026 · based on 460 locations within about half a mile of this property
| Provider | Technology | Download / Upload (Mbps) |
|---|---|---|
| Ayva | Fixed Wireless (unlicensed) | 2,500 / 2,500 |
| Xfinity | Cable | 2,000 / 250 |
| Live Wire Networks | Fixed Wireless (licensed-by-rule) | 250 / 100 |
| T-Mobile USA | Fixed Wireless | 100 / 20 |
May also be available at this address: Lumen Technologies, AT&T. Availability varies by address; speeds are provider-advertised maximums, not measured.
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