Boulder County property record for 605 11th St, Boulder, CO 80302
| Property Type | Single Family Home |
|---|---|
| Details | 5 bd · 5.25 ba · 7,086 sqft · built 1990 |
| Lot Size | 0.456 acres (19,852 sqft) |
| Owner | Company Name on Record |
| Last Sale | $2,275,000 (Oct 1998) |
| Tax Bill | $29,927 (2025) |
| Deeds & Mortgages | Aug 2026 Sale |
| Flood Zone | Zone X (minimal risk) |
| APN | 1579-01-1-01-003 |
| Primary APN | 1579-01-1-01-003 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 5 Beds |
|---|---|
| Full Baths | 5.25 Baths |
| Half Baths | 2 Half Baths |
| Total Rooms | 14 Rooms |
| Stories | 2 Stories |
| Building Area | 7,086 sqft Living Area |
| Gross Area | 8,143 sqft |
| 1st Floor Area | 4,005 sqft |
| Upper Floors Area | 1,149 sqft |
| Basement Area | 2,059 sqft |
| Interior Walls | Wallboard/Drywall |
| Year Built | Built 1990 |
|---|---|
| Effective Year Built | Effective 1990 |
| Architectural Style | A-Frame |
| Exterior Material | Frame/Stucco |
| Construction Type | Frame |
| Roof Material | Other |
| Lot Area | 19,852 sqft (0.456 acres) |
| Garage Type | Attached |
| Garage Area | 930 sqft |
| Parking Spaces | 4 Parking Spaces |
| Porch | Slab |
|---|---|
| Porch Area | 1,562 sqft |
| Deck Area | 70 sqft |
| Patio Area | 293 sqft |
| Cooling System | Central |
|---|---|
| Heating System | Forced Air with A/C |
| Account Number | R0005679 |
|---|---|
| Street Address | 605 11TH ST |
| City | BOULDER |
| State | CO |
| Zip | 80302-7511 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT 3 HOLMES PLACE |
| Legal Range | 71 |
| Legal Township | 1S |
| Legal Section | 01 |
| Legal Subdivision | HOLMES PLACE - BO |
| Legal Block | 3 |
| Legal Lot Number | 3 |
| Jurisdiction | BOULDER CO |
| Township / Civil Division | BOULDER |
| Census Block Group | 3 |
| Census Block | 3004 |
| Census Tract | 12505 |
Source: Boulder County records, as of October 16, 2026
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Owner of Record | Company Name on Record |
|---|---|
| Mailing Address | 605 11TH ST, BOULDER, CO 80302-7511 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Oct 27, 1998 · Amount on Record |
| Deed Sale | Oct 27, 1998 · Amount on Record |
| Prior Sale | Apr 3, 1991 |
| Deed Document Number | 19981863518 |
| Last Transfer Date | Nov 23, 2012 |
| Transfer Doc | 0003271466 |
| Record Updated | Oct 29, 2026 |
| Document Type | Bargain and Sale Deed |
|---|---|
| Jurisdiction | BOULDER CO |
| Recording Date | Aug 24, 2026 |
| Property Address | 605 11TH ST, BOULDER, CO 80302-7511 |
| Document Number | 0004144858 |
| Instrument Date | Aug 18, 2026 |
| Instrument | 20264144858 |
| Transaction Type | Transfer |
| Record Updated | Sep 2, 2026 |
| Title Company | NONE LISTED ON DOCUMENT |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Full Amount Stated |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Trust |
| Address | 605 11TH ST, BOULDER, CO 80302-7511 |
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 | $343,529 (+7.31%) Land $186,415 Building $157,114 | $5,121,903 (-) Land $2,811,400 Building $2,310,503 | |
| 2025 | $29,927.00 (+0.18%) | $320,119 (-8.43%) Land $175,713 Building $144,406 | $5,121,903 (-1.84%) Land $2,811,400 Building $2,310,503 |
| 2023 | $29,872.00 (+13.29%) | $349,599 (+23.12%) Land $180,176 Building $169,423 | $5,217,900 (+27.72%) Land $2,689,200 Building $2,528,700 |
| 2022 | $26,367.00 | $283,942 Land $150,134 Building $133,808 | $4,085,500 Land $2,160,200 Building $1,925,300 |
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 |
|---|---|
| Nearest Special Flood Hazard Area | Zone AE, within 500 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Community Rating System | Class 5 (25% premium discount) |
| Nearby Flood Policies | 7 in force |
| Nearby Flood Claims | 6 (1980–2013) |
| Claims Outside the SFHA | 5 of 6 |
| Most Recent Claim | Sep 2013 · Severe Storms, 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 73% of the US · above 70% of Colorado |
|---|---|
| Wildfire Likelihood | 0.3% annual chance |
| Exposure | Indirect within ember reach |
| Adjoins Burnable Land | Yes |
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 480 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Ayva Networks Fixed Wireless | 2,500 / 2,500 |
| CenturyLink Fiber | 2,000 / 1,000 |
| Xfinity Cable | 2,000 / 250 |
| Verizon Fixed Wireless | 300 / 20 |
| LiveWireNet Fixed Wireless | 250 / 100 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: Magnolia Road Internet Cooperative.
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