Boulder County property record for 3500 Bison Dr, Boulder, CO 80302 · Last verified June 2026
| Property Type | Residential > Single Family > Home |
|---|---|
| Bedrooms | 3 Beds |
| Bathrooms | 2.25 Baths |
| Year Built | Built 2010 |
| Square Footage | 2,644 sqft Living Area |
| Lot Size | 37.5 acres |
| Garage | Attached, 584 sqft |
| Last Sale | $2,800,000 (2025) |
| Tax Bill | $9,051.00 (2025) |
Source: Boulder County records · APN 1579-00-1-00-013
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 | Company Name on File |
|---|---|
| Mailing Address | 3500 BISON DR, BOULDER, CO 80302-9528 |
| Owner Type | Owner is a Company |
| Date | Document |
|---|---|
| Sep 09, 2025 | Warranty Deed, Transfer FIDELITY NATIONAL TITLE |
| Jan 23, 2019 | Deed of Trust, Mortgage · Adjustable Rate Mortgage (ARM) FIRST WESTERN TRUST BANK |
| Jul 09, 2020 | Deed of Trust, Mortgage · Conventional Mortgage FIRST WESTERN TRUST BANK |
| Deed Names | Verified Name on Deed |
|---|---|
| Last Sale | Sep 09, 2025 · Amount on Record |
| Deed Sale | Sep 09, 2025 · Amount on Record |
| Prior Sale | Aug 07, 2015 · Amount on Record |
| Deed Doc Number | 20254101478 |
| Prior Transfer Date | Jul 18, 2005 |
| Prior Transfer Doc | 0000005240 |
| Record Refreshed | Sep 20, 2026 |
| Document Type | Warranty Deed |
|---|---|
| Jurisdiction | BOULDER CO |
| Recording Date | Sep 09, 2025 |
| Property Address | 3500 BISON DR, BOULDER, CO 80302-9528 |
| Document Number | 0004101478 |
| Instrument Date | Aug 26, 2025 |
| Instrument | 4101478 |
| Transaction Type | Transfer |
| Record Updated | Sep 29, 2025 |
| Title Company | FIDELITY NATIONAL TITLE |
| Amount | Amount Recorded |
|---|---|
| Tax | $280.00 |
| Amount Accuracy | Full Amount Stated |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 3500 BISON DR, BOULDER, CO 80302-9528 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | BOULDER CO |
| Property Address | 3500 BISON DR, BOULDER, CO 80302-9528 |
| Transaction Type | Mortgage |
| Record Updated | Feb 05, 2021 |
| Name | Verified Name |
|---|
| Document Number | 0003695037 |
|---|---|
| Date | Jan 23, 2019 |
| Instrument | 3695037 |
| Name | FIRST WESTERN TRUST BANK |
|---|---|
| Type | Bank |
| Address | ENGLEWOOD, CO 80111 |
| Type | Adjustable Rate Mortgage (ARM) |
|---|---|
| Amount | Amount Recorded |
| Term | 360 Months |
| Due | Jan 01, 2049 |
| Rate Type | Adjustable Rate |
|---|---|
| Rate | 4.25% |
| Type Change Date | Jan 01, 2026 |
| Change Frequency | Annually |
| Min Rate At Change | 2.75% |
| Max Rate At Change | 9.25% |
| Index | 1-Year LIBOR |
| Max Rate | 9.25% |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | BOULDER CO |
| Property Address | 3500 BISON DR, BOULDER, CO 80302-9528 |
| Transaction Type | Mortgage |
| Record Updated | Feb 05, 2021 |
| Title Company | FIRST INTEGRITY TITLE |
| Name | Verified Name |
|---|
| Document Number | 0003796945 |
|---|---|
| Date | Jul 09, 2020 |
| Instrument | 3796945 |
| Name | FIRST WESTERN TRUST BANK |
|---|---|
| Type | Bank |
| Address | ENGLEWOOD, CO 80111 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 360 Months |
| Due | Jul 01, 2050 |
| Rate Type | Adjustable Rate |
|---|---|
| Rate | 3.75% |
| Adjustable | Document includes a rider for adjustable-rate mortgage with a specific rate change date. |
| Type Change Date | Jul 01, 2030 |
| Change Frequency | Annually |
| Min Rate At Change | 2.75% |
| Max Rate At Change | 8.75% |
| Index | 1-Year LIBOR |
| Max Rate | 8.75% |
Source: Boulder County records · Assessment roll updated June 15, 2026 · Last verified June 2026
| Type | Name |
|---|---|
| State | Colorado |
| County | Boulder County |
| Unified School District | Boulder Valley School District RE-2 (PK - 12) |
Assessed value is set for property tax purposes, not a market price estimate; it is a fraction of this property's market value.
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $167,450 (+85.09%) Land $29,369 Building $138,081 | $2,462,500 (+70.12%) Land $431,900 Building $2,030,600 | |
| 2025 | $9,051.00 (+2.31%) | $90,469 (-5.42%) Land $23,444 Building $67,025 | $1,447,500 (-2.37%) Land $375,100 Building $1,072,400 |
| 2024 | $8,847.00 (+1.56%) | $95,656 (-3.71%) Land $28,723 Building $66,933 | $1,482,700 (-) Land $483,700 Building $999,000 |
| 2023 | $8,711.00 (+24.87%) | $99,341 (+40.46%) Land $32,408 Building $66,933 | $1,482,700 (+45.71%) Land $483,700 Building $999,000 |
| 2022 | $6,976.00 | $70,723 Land $20,106 Building $50,617 | $1,017,600 Land $289,300 Building $728,300 |
Source: FEMA National Flood Hazard Layer, Boulder County (08013C), updated October 14, 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified: October 2026
| FEMA Flood Zone | Zone X |
|---|---|
| Flood Hazard | Minimal |
| 500-Year Floodplain | No |
| Special Flood Hazard Area | No |
| Wildfire Risk | Extreme above 98% of the US · above 100% of Colorado |
|---|---|
| Wildfire Likelihood | About 1 in 60 per year |
| Exposure | Direct burnable vegetation at the parcel |
Insurers in high-risk areas may require mitigation or decline coverage; check availability before making an offer.
Values are read at the parcel center point; lenders make the official flood determination.
| Primary APN | 1579-00-1-00-013 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2.25 Baths |
| Partial Baths | 2 Partial Baths |
| Total Rooms | 6 Rooms |
| Building Area | 2,644 sqft Living Area |
| Gross Area | 3,304 sqft Gross Area |
| 1st Floor | 1,663 sqft 1st Floor |
| Basement Area | 1,057 sqft Basement |
| Finished Basement | 981 sqft Finished |
| Unfinished Basement | 76 sqft Unfinished |
| Stories | 1 Stories |
| Interior Structure | Wallboard/Drywall Interior Structure |
| Year Built | Built 1988 |
|---|---|
| Effective Year Built | Effective 2010 |
| Architectural Style | Ranch Style |
| Exterior Material | Combination Exterior |
| Construction Type | Frame Construction |
| Roof Material | Metal Roof |
| Lot Area | 1,635,015 sqft |
| Parking Spaces | 4 Parking Spaces |
| Garage Type | Attached Garage |
| Garage Area | 584 sqft Garage |
| Deck Area | 520 sqft Deck |
| Patio Area | 814 sqft Patio |
| Cooling System | Central Cooling |
|---|---|
| Heating System | Radiant Heating |
| Account Number | R0080997 |
|---|---|
| Street Address | 3500 BISON DR |
| City | BOULDER |
| State | CO |
| Zip | 80302-9528 |
| Property Usage | Residential Property Usage |
| Type | Residential > Single Family > Home |
| Legal Description | NE 1/4 SW 1/4 11-1S-71 40 AC M/L PER DEED 909791 03/28/88 BCR CONSERVATION ESMT ON 2.13 ACS PER REC # 1763320 BCR |
| Legal Range | 71 |
| Legal Township | 1S |
| Legal Section | 11 |
| Legal Subdivision | TR, NBR 910 WALKER RANCH AREA |
| Legal Block | 4 |
| Jurisdiction | BOULDER CO |
| Minor Civil Division | BOULDER |
| Census Blockgroup | 4 |
| Census Block | 4001 |
| Census Tract | 12510 |
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