Boulder County property record for 4820 Thunderbird Cir, Boulder, CO 80303
| Property Type | Apartment House (2-4 Units) |
|---|---|
| Details | 120 bd · 71,646 sqft · built 1969 |
| Lot Size | 2.72 acres (118,592 sqft) |
| Owner | Company Name on Record |
| Tax Bill | $169,809 (2025) |
| Deeds & Mortgages | Dec 2017 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 1577-04-3-30-003 |
| Primary APN | 1577-04-3-30-003 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 120 Beds |
|---|---|
| Half Baths | 2 Half Baths |
| Total Rooms | 360 Rooms |
| Units | 61 Units |
| Building Area | 71,646 sqft Living Area |
| 1st Floor Area | 25,000 sqft |
| Upper Floors Area | 23,323 sqft |
| Basement Area | 23,349 sqft |
| Interior Walls | Wallboard/Drywall |
| Year Built | Built 1969 |
|---|---|
| Effective Year Built | Effective 1991 |
| Architectural Style | Ranch |
| Exterior Material | Brick Veneer |
| Construction Type | Masonry / Concrete Block |
| Lot Area | 118,592 sqft |
| Total Buildings | 3 Buildings |
| Heating System | Hot Water |
|---|
| Account Number | R0512150 |
|---|---|
| Street Address | 4820 THUNDERBIRD CIR |
| City | BOULDER |
| State | CO |
| Zip | 80303-3921 |
| Property Category | Commercial |
| Property Type | Residential > Multi-Unit > Apartment House (2-4 Units) |
| Legal Description | LOT 3 & W 20 FT OUTLOT A THUNDERBIRD 1 |
| Legal Range | 70 |
| Legal Township | 1S |
| Legal Section | 04 |
| Legal Subdivision | THUNDERBIRD 1 - BO |
| Legal Block | 1 |
| Legal Lot Number | 3 |
| Jurisdiction | BOULDER CO |
| Township / Civil Division | BOULDER |
| Census Block Group | 1 |
| Census Block | 1015 |
| Census Tract | 12511 |
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 | Company Name on Record |
|---|---|
| Mailing Address | 6255 HABITAT DR, 3005, BOULDER, CO 80301-3219 |
| Owner Type | Company |
| Vesting | Company |
| Deed Names | Name on Deed |
|---|---|
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | BOULDER CO |
| Property Address | 4820 THUNDERBIRD CIR, BOULDER, CO 80303-3921 |
| Document Number | 0003628599 |
| Instrument Date | Dec 1, 2017 |
| Transaction Type | Mortgage |
| Record Updated | Dec 7, 2017 |
| Title Company | ATTORNEY ONLY |
| Name | Verified Name |
|---|---|
| Relationship | Limited Partnership |
| Address | 6255 HABITAT DR #3005 BOULDER CO 803013219, 3005, BOULDER, CO 80301-3219 |
| Document Number | 0003628599 |
|---|---|
| Date | Dec 1, 2017 |
| Instrument | 3628599 |
| Name | MISCELLANEOUS INS CO |
|---|---|
| Address | 1 STATE FARM PLZ, BLOOMINGTON, IL 61710 |
| Amount | Amount Recorded |
|---|---|
| Term | 120 Months |
| Due | Nov 30, 2027 |
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 | $1,825,120 (+8.52%) Land $265,526 Building $1,559,594 | $26,910,000 (-) Land $3,974,800 Building $22,935,200 | |
| 2025 | $169,809.00 (+19.98%) | $1,681,875 (+9.14%) Land $248,425 Building $1,433,450 | $26,910,000 (+17%) Land $3,974,800 Building $22,935,200 |
| 2023 | $141,535.00 (-5.11%) | $1,541,000 (+1.94%) Land $173,597 Building $1,367,403 | $23,000,000 (+3.46%) Land $2,591,000 Building $20,409,000 |
| 2022 | $149,151.00 | $1,511,640 Land $176,188 Building $1,335,452 | $22,230,000 Land $2,591,000 Building $19,639,000 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
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 |
|---|---|
| Nearest Special Flood Hazard Area | Zone AE, within 100 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Flood Insurance Cost | Premium on Record median of 67 individual policies |
| Community Rating System | Class 5 (25% premium discount) |
| Nearby Flood Policies | 174 units insured incl. 107 condo units |
| Nearby Flood Claims | 107 (1982–2023) |
| Claims Outside the SFHA | 83 of 107 |
| Most Recent Claim | Sep 2023 · rainfall accumulation |
| 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 | Moderate above 45% of the US · lower than 72% of Colorado |
|---|---|
| Wildfire Likelihood | 0.08% annual chance |
| Exposure | Indirect 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 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 339 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 |
| LiveWireNet Fixed Wireless | 250 / 100 |
| CenturyLink DSL | 140 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T Fixed Wireless | 100 / 20 |
Search by:
By searching, you agree to: Terms • Privacy • Disclosures