Boulder County property record for 725 Union Ave, Boulder, CO 80304
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2.75 ba · 2,194 sqft · built 1964 |
| Lot Size | 0.17 acres (7,382 sqft) |
| Owner | 2 Individual Names on Record |
| Last Sale | $1,144,000 (Aug 2025) |
| Tax Bill | $8,292 (2025) |
| Deeds & Mortgages | Jan 2026 Mortgage Sep 2025 Transfer + 1 more |
| Flood Zone | Zone X (minimal risk) |
| APN | 1461-13-1-02-002 |
| Primary APN | 1461-13-1-02-002 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2.75 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 8 Rooms |
| Stories | 2 Stories |
| Building Area | 2,194 sqft Living Area |
| 1st Floor Area | 1,270 sqft |
| Upper Floors Area | 924 sqft |
| Interior Walls | Wallboard/Drywall |
| Year Built | Built 1964 |
|---|---|
| Effective Year Built | Effective 1995 |
| Architectural Style | A-Frame |
| Exterior Material | Wood Shingle |
| Construction Type | Frame |
| Roof Material | Asphalt |
| Lot Area | 7,382 sqft (0.17 acres) |
| Deck Area | 360 sqft |
| Cooling System | Evaporative |
|---|---|
| Heating System | Forced Air with A/C |
| Account Number | R0109873 |
|---|---|
| Street Address | 725 UNION AVE |
| City | BOULDER |
| State | CO |
| Zip | 80304-0706 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT 2 WEST UNION |
| Legal Range | 71 |
| Legal Township | 1N |
| Legal Section | 13 |
| Legal Subdivision | WEST UNION SUB |
| Legal Block | 1 |
| Legal Lot Number | 2 |
| Jurisdiction | BOULDER CO |
| Township / Civil Division | BOULDER |
| Census Block Group | 1 |
| Census Block | 1008 |
| Census Tract | 12104 |
Source: Boulder County records, as of September 18, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | 2 Individual Names on Record |
|---|---|
| Mailing Address | 725 UNION AVE, BOULDER, CO 80304-0706 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Tenants in Common |
| Date | Document |
|---|---|
| Jan 28, 2026 | Deed of Trust, Mortgage · Conventional Mortgage CROSSCOUNTRY MORTGAGE LLC |
| Sep 11, 2025 | Intrafamily Transfer, Transfer LAND TITLE GUARANTY COMPANY IN, LAND TITLE GUARANTEE COMPANY |
| Apr 5, 2018 | Grant Deed, Transfer |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Aug 20, 2025 · Amount on Record |
| Deed Sale | Aug 20, 2025 · Amount on Record |
| Prior Sale | Jul 22, 2024 · Amount on Record |
| Deed Document Number | 20254099311 |
| Last Transfer Date | Sep 9, 2025 |
| Transfer Doc | 0004101931 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | BOULDER CO |
| Property Address | 725 UNION AVE, BOULDER, CO 80304-0706 |
| Transaction Type | Mortgage |
| Record Updated | Feb 13, 2026 |
| Title Company | LAND TITLE GUARANTY COMPANY IN, LAND TITLE GUARANTEE COMPANY |
| Name | Verified Name |
|---|---|
| Address | 2401 WALNUT ST 8, 8, BOULDER, CO 80302-4638 |
| Document Number | 0004117984 |
|---|---|
| Date | Jan 28, 2026 |
| Instrument | 4117984 |
| Name | CROSSCOUNTRY MORTGAGE LLC |
|---|---|
| Type | Mortgage Company |
| Address | CLEVELAND, OH 44114 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 356 Months |
| Due | Sep 1, 2055 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | BOULDER CO |
| Recording Date | Sep 11, 2025 |
| Property Address | 725 UNION AVE, BOULDER, CO 80304-0706 |
| Document Number | 0004101931 |
| Instrument Date | Sep 9, 2025 |
| Instrument | 4101931 |
| Transaction Type | Transfer |
| Record Updated | Sep 29, 2025 |
| Title Company | LAND TITLE GUARANTY COMPANY IN, LAND TITLE GUARANTEE COMPANY |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | No Consideration Stated |
| Additional |
|
| Name | Verified Name |
|---|---|
| Address | 725 UNION AVE, BOULDER, CO 80304-0706 |
| Name | Verified Name |
|---|---|
| Relationship | Tenants in Common |
| Address | 725 UNION AVE, BOULDER, CO 80304-0706 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | BOULDER CO |
| Recording Date | Apr 5, 2018 |
| Property Address | 725 UNION AVE, BOULDER, CO 80304-0706 |
| Document Number | 0003649050 |
| Instrument Date | Mar 30, 2018 |
| Instrument | 3649050 |
| Transaction Type | Transfer |
| Record Updated | Apr 13, 2018 |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Company |
| Address | 796 UNION AVE BOULDER CO 803040707, BOULDER, CO 80304-0707 |
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 | $89,862 (+3.33%) Land $64,865 Building $24,997 | $1,391,500 (-) Land $1,023,900 Building $367,600 | |
| 2025 | $8,292.00 (-0.73%) | $86,969 (-7.63%) Land $63,994 Building $22,975 | $1,391,500 (-4.7%) Land $1,023,900 Building $367,600 |
| 2024 | $8,353.00 (+1.8%) | $94,148 (-3.77%) Land $66,149 Building $27,999 | $1,460,200 (-) Land $1,042,300 Building $417,900 |
| 2023 | $8,205.00 (+19.09%) | $97,833 (+33.3%) Land $69,834 Building $27,999 | $1,460,200 (+38.28%) Land $1,042,300 Building $417,900 |
| 2022 | $6,890.00 | $73,392 Land $55,954 Building $17,438 | $1,056,000 Land $805,100 Building $250,900 |
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 |
| Flood Insurance Cost | Premium on Record median of 58 individual policies |
| Community Rating System | Class 5 (25% premium discount) |
| Nearby Flood Policies | 63 units insured incl. 5 condo units |
| Nearby Flood Claims | 14 (2013–2015) |
| Claims Outside the SFHA | 6 of 14 |
| Most Recent Claim | May 2015 · Severe Storms, Tornadoes, 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.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | High above 81% of the US · above 84% of Colorado |
|---|---|
| Wildfire Likelihood | 0.6% 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 | 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 222 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 |
| LiveWireNet Fixed Wireless | 250 / 100 |
| CenturyLink DSL | 140 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
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