Boulder County property record for 4675 51st St, Boulder, CO 80301
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 3.5 ba · 4,553 sqft · built 1935 |
| Lot Size | 2.3 acres (100,369 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $663,500 (Nov 2006) |
| Tax Bill | $10,525 (2025) |
| Deeds & Mortgages | Nov 2017 Mortgage Mar 2021 Mortgage + 1 more |
| Flood Zone | Zone X (minimal risk) |
| APN | 1463-09-0-13-001 |
| Primary APN | 1463-09-0-13-001 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 3.5 Baths |
| Half Baths | 2 Half Baths |
| Total Rooms | 10 Rooms |
| Stories | 2 Stories |
| Building Area | 4,553 sqft Living Area |
| Gross Area | 5,255 sqft |
| 1st Floor Area | 2,773 sqft |
| Upper Floors Area | 772 sqft |
| Basement Area | 1,008 sqft |
| Finished Basement | 1,008 sqft |
| Interior Walls | Wallboard/Drywall |
| Year Built | Built 1935 |
|---|---|
| Effective Year Built | Effective 2000 |
| Architectural Style | A-Frame |
| Exterior Material | Wood Shingle |
| Construction Type | Masonry / Concrete Block |
| Roof Material | Other |
| Lot Area | 100,369 sqft |
| Garage Type | Attached |
| Garage Area | 702 sqft |
| Parking Spaces | 6 Parking Spaces |
| Porch | Porch |
| Porch Area | 700 sqft |
| Heating System | Forced Air with A/C |
|---|
| Account Number | R0029646 |
|---|---|
| Street Address | 4675 51ST ST |
| City | BOULDER |
| State | CO |
| Zip | 80301-4305 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | A |
| Legal Description | LOT 1 GALLAGHER FARM |
| Legal Range | 70 |
| Legal Township | 1N |
| Legal Section | 09 |
| Legal Subdivision | GALLAGHER FARM - BO |
| Legal Block | 3 |
| Legal Lot Number | 1 |
| Jurisdiction | BOULDER CO |
| Township / Civil Division | BOULDER |
| Census Block Group | 3 |
| Census Block | 3000 |
| Census Tract | 12701 |
Source: Boulder County records · APN 1463-09-0-13-001
Assessment roll updated June 15, 2026 · Last verified July 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 File |
|---|---|
| Mailing Address | 4675 51ST ST, BOULDER, CO 80301-4305 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Joint Tenants |
| Date | Document |
|---|---|
| Nov 13, 2017 | Deed of Trust, Mortgage · ARM US BANK NA |
| Mar 01, 2021 | Deed of Trust, Mortgage · Conventional Mortgage QUICKEN LOANS LLC |
| Jun 21, 2018 | Deed of Trust, Mortgage · Line of Credit KEYBANK USA |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Sale | Nov 30, 2006 · Amount on Record |
| Deed Sale | Nov 30, 2006 · Amount on Record |
| Prior Sale | Jul 10, 2006 |
| Deed Document Number | 20062821036 |
| Prior Transfer Date | Mar 17, 1998 |
| Prior Transfer Doc | 0001782395 |
| Record Updated | Sep 20, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | BOULDER CO |
| Property Address | 4675 51ST ST, BOULDER, CO 80301-4305 |
| Transaction Type | Mortgage |
| Record Updated | Jul 26, 2022 |
| Name | Verified Name |
|---|
| Document Number | 0003625341 |
|---|---|
| Date | Nov 13, 2017 |
| Instrument | 3625341 |
| Name | US BANK NA |
|---|---|
| Type | Bank |
| Address | FARGO, ND 58103 |
| Type | ARM |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Dec 01, 2047 |
| Rate Type | Adjustable Rate |
|---|---|
| Rate | 3.87% |
| Type Change Date | Dec 01, 2024 |
| Change Frequency | Annually |
| Min Rate At Change | 2.25% |
| Max Rate At Change | 8.87% |
| Index | 1-Year LIBOR |
| Max Rate | 8.87% |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | BOULDER CO |
| Property Address | 4675 51ST ST, BOULDER, CO 80301-4305 |
| Transaction Type | Mortgage |
| Record Updated | Jul 26, 2022 |
| Name | Verified Name |
|---|
| Document Number | 0003862820 |
|---|---|
| Date | Mar 01, 2021 |
| Instrument | 3862820 |
| Name | QUICKEN LOANS LLC |
|---|---|
| Type | Mortgage Company |
| Address | DETROIT, MI 48226 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 360 Months |
| Due | Mar 01, 2051 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | BOULDER CO |
| Property Address | 4675 51ST ST, BOULDER, CO 80301-4305 |
| Document Number | 0003663655 |
| Instrument Date | Jun 21, 2018 |
| Transaction Type | Mortgage |
| Record Updated | Oct 11, 2019 |
| Title Company | OLD REPUBLIC TITLE |
| Name | Verified Name |
|---|---|
| Address | 4675 51ST ST BOULDER CO 803014305, BOULDER, CO 80301-4305 |
| Document Number | 0003663655 |
|---|---|
| Date | Jul 02, 2018 |
| Instrument | 3663655 |
| Name | KEYBANK USA |
|---|---|
| Type | Bank |
| Address | 4910 TIEDEMAN RD # B, BROOKLYN, OH 44144-2338 |
| Type | Line of Credit |
|---|---|
| Amount | Amount Recorded |
| Term | 360 Months |
| Due | Jul 01, 2048 |
| Rate Type | Adjustable Rate |
|---|
Source: Boulder County records · Assessment roll updated June 15, 2026 · Last verified July 2026
| Type | Name |
|---|---|
| State | Colorado |
| County | Boulder County |
| Unified School District | Boulder Valley School District RE-2 (PK - 12) |
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.
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $114,634 (+8.8%) Land $51,238 Building $63,396 | $1,685,800 (-) Land $753,500 Building $932,300 | |
| 2025 | $10,525.00 (+16.63%) | $105,363 (+2.22%) Land $47,094 Building $58,269 | $1,685,800 (+9.57%) Land $753,500 Building $932,300 |
| 2023 | $9,024.00 (+25.56%) | $103,079 (+39.71%) Land $35,128 Building $67,951 | $1,538,500 (+44.92%) Land $524,300 Building $1,014,200 |
| 2022 | $7,187.00 | $73,781 Land $28,196 Building $45,585 | $1,061,600 Land $405,700 Building $655,900 |
Source: FEMA National Flood Hazard Layer as of October 14, 2026 · FEMA NFIP claims and policies as of September 2026 · USDA Forest Service Wildfire Risk to Communities as of 2024 · Last verified October 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 29 policies |
| Community Rating System | Class 5 (25% premium discount) |
| Nearby Flood Policies | 29 in force |
| Nearby Flood Claims | 5 (1995–2013) |
| Claims Outside the SFHA | 3 of 5 |
| Most Recent Claim | Sep 2013 · Severe Storms, Flooding, Landslides, And Mudslides |
| Claims by Event |
|
| Wildfire Risk | High above 76% of the US · above 75% of Colorado |
|---|---|
| Wildfire Likelihood | 0.5% annual chance |
| Exposure | Direct burnable vegetation at the parcel |
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 as of December 31, 2025 · Last verified October 2026
| Provider | Max Down / Up (Mbps) |
|---|---|
| Ayva Fixed Wireless | 2,500 / 2,500 |
| Xfinity Cable | 1,200 / 35 |
| Verizon Fixed Wireless | 300 / 20 |
May also be available: Live Wire Networks.
Based on FCC filings for 30 locations within half a mile of this property.
5G (outdoors only) and 4G LTE
Source: EPA Safe Drinking Water Information System as of 2026 Q3 · EPA water system boundaries as of March 2026 · Last verified October 2026
| Water System | LEFT HAND WD serves 20,280 people |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Jun 2022 |
| Lead | 1 ppb (2023–2025) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | None last 3 years |
Results are for the whole water system as reported to EPA, not water tested at this address; lead at the tap also depends on the building's own pipes. The full violation and enforcement history is in the system's EPA record.
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