Boulder County property record for 428 Concord Ave, Boulder, CO 80304
| Property Type | Single Family Home |
|---|---|
| Details | 2 bd · 3.5 ba · 2,985 sqft · built 1914 |
| Lot Size | 0.13 acres (5,658 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $113,000 (Jan 1991) |
| Tax Bill | $11,558 (2025) |
| Deeds & Mortgages | Jul 2018 Mortgage Sep 2019 Mortgage + 2 more |
| Flood Zone | Zone X (minimal risk) |
| APN | 1461-25-1-01-006 |
| Primary APN | 1461-25-1-01-006 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 3.5 Baths |
| Half Baths | 4 Half Baths |
| Total Rooms | 8 Rooms |
| Stories | 1 Story |
| Building Area | 2,985 sqft Living Area |
| Gross Area | 3,277 sqft |
| 1st Floor Area | 1,472 sqft |
| Basement Area | 1,224 sqft |
| Finished Basement | 932 sqft |
| Unfinished Basement | 292 sqft |
| Interior Walls | Plaster |
| Year Built | Built 1914 |
|---|---|
| Effective Year Built | Effective 2010 |
| Architectural Style | Ranch |
| Exterior Material | Brick Veneer |
| Construction Type | Masonry / Concrete Block |
| Roof Material | Asphalt |
| Lot Area | 5,658 sqft (0.13 acres) |
| Porch | Porch |
| Porch Area | 162 sqft |
| Total Buildings | 2 Buildings |
| Cooling System | Central |
|---|---|
| Heating System | Forced Air with A/C |
| Account Number | R0009057 |
|---|---|
| Street Address | 428 CONCORD AVE |
| City | BOULDER |
| State | CO |
| Zip | 80304-3919 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT 9 & E 15 FT LOT 10 BLK 10 MAXWELLS |
| Legal Range | 71 |
| Legal Township | 1N |
| Legal Section | 25 |
| Legal Subdivision | MAXWELLS - BO |
| Legal Block | 10 |
| Legal Lot Number | 9 |
| Jurisdiction | BOULDER CO |
| Township / Civil Division | BOULDER |
| Census Block Group | 4 |
| Census Block | 4003 |
| Census Tract | 12101 |
Source: Boulder County records · APN 1461-25-1-01-006
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 | 2 Individual Names on File |
|---|---|
| Mailing Address | 428 CONCORD AVE, BOULDER, CO 80304-3919 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Date | Document |
|---|---|
| Jul 05, 2018 | Deed of Trust, Mortgage · Conventional Mortgage NATIONAL BANK OF KANSAS CITY |
| Sep 11, 2019 | Deed of Trust, Mortgage · Conventional Mortgage PROVIDENT FUNDING ASSOCIATES LP |
| Sep 28, 2020 | Deed of Trust, Mortgage · Conventional Mortgage PROVIDENT FUNDING ASSOCIATES LP |
| Jan 13, 2021 | Deed of Trust, Mortgage · Conventional Mortgage BETTER MTG CORP ISAOA |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Sale | Jan 29, 1991 · Amount on Record |
| Deed Sale | Jan 29, 1991 · Amount on Record |
| Prior Sale | Jun 03, 1981 · Amount on Record |
| Deed Document Number | 19911085268 |
| Record Updated | Sep 20, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | BOULDER CO |
| Property Address | 428 CONCORD AVE, BOULDER, CO 80304-3919 |
| Transaction Type | Mortgage |
| Record Updated | Feb 05, 2021 |
| Name | Verified Name |
|---|
| Document Number | 0003664479 |
|---|---|
| Date | Jul 05, 2018 |
| Instrument | 3664479 |
| Name | NATIONAL BANK OF KANSAS CITY |
|---|---|
| Type | Bank |
| Address | KANSAS CITY, MO 64114 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 180 Months |
| Due | Jul 01, 2033 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | BOULDER CO |
| Property Address | 428 CONCORD AVE, BOULDER, CO 80304-3919 |
| Transaction Type | Mortgage |
| Record Updated | Feb 05, 2021 |
| Title Company | CANYON TITLE |
| Name | Verified Name |
|---|
| Document Number | 0003735635 |
|---|---|
| Date | Sep 11, 2019 |
| Instrument | 3735635 |
| Name | PROVIDENT FUNDING ASSOCIATES LP |
|---|---|
| Type | Mortgage Company |
| Address | PITTSBURGH, PA 15220 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 181 Months |
| Due | Oct 01, 2034 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | BOULDER CO |
| Property Address | 428 CONCORD AVE, BOULDER, CO 80304-3919 |
| Transaction Type | Mortgage |
| Record Updated | Feb 05, 2021 |
| Name | Verified Name |
|---|
| Document Number | 0003818995 |
|---|---|
| Date | Sep 28, 2020 |
| Instrument | 3818995 |
| Name | PROVIDENT FUNDING ASSOCIATES LP |
|---|---|
| Type | Mortgage Company |
| Address | BURLINGAME, CA 94010 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 179 Months |
| Due | Aug 01, 2035 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | BOULDER CO |
| Property Address | 428 CONCORD AVE, BOULDER, CO 80304-3919 |
| Document Number | 0003853550 |
| Instrument Date | Jan 13, 2021 |
| Transaction Type | Mortgage |
| Record Updated | Feb 19, 2021 |
| Title Company | OTHER |
| Name | Verified Name |
|---|---|
| Relationship | Joint Tenants with Right of Survivorship |
| Address | 428 CONCORD AVE BOULDER CO 803043919, BOULDER, CO 80304-3919 |
| Document Number | 0003853550 |
|---|---|
| Date | Jan 26, 2021 |
| Instrument | 3853550 |
| Name | BETTER MTG CORP ISAOA |
|---|---|
| Address | NEW YORK, NY 10271 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 180 Months |
| Due | Jan 25, 2036 |
Source: Boulder County records · Assessment roll updated June 15, 2026 · Last verified June 2026
| Type | Name |
|---|---|
| State | Colorado |
| County | Boulder County |
| Municipality | Boulder City |
| Unified School District | Boulder Valley School District RE-2 (PK - 12) |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $138,458 (+14.22%) Land $100,443 Building $38,015 | $2,036,150 (+4.98%) Land $1,477,100 Building $559,050 | |
| 2025 | $11,558.00 (+24.31%) | $121,222 (+8.86%) Land $92,319 Building $28,903 | $1,939,550 (+16.7%) Land $1,477,100 Building $462,450 |
| 2023 | $9,298.00 (+30.48%) | $111,358 (+45.11%) Land $100,507 Building $10,851 | $1,662,050 (+50.52%) Land $1,500,100 Building $161,950 |
| 2022 | $7,126.00 | $76,742 Land $64,927 Building $11,815 | $1,104,200 Land $934,200 Building $170,000 |
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 |
| Community Rating System | Class 5 (25% premium discount) |
| Nearby Flood Policies | 15 units insured incl. 9 condo units |
| Nearby Flood Claims | 2 (2013) |
| Most Recent Claim | Sep 2013 · Severe Storms, Flooding, Landslides, And Mudslides |
| Wildfire Risk | High above 77% of the US · above 78% of Colorado |
|---|---|
| Wildfire Likelihood | 0.4% annual chance |
| Exposure | Indirect within ember reach |
| Adjoins Burnable Land | Yes |
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 |
| Lumen Technologies Fiber · DSL in parts of the area | 2,000 / 1,000 |
| Xfinity Cable | 2,000 / 250 |
| Live Wire Networks Fixed Wireless | 250 / 100 |
| T-Mobile USA Fixed Wireless | 100 / 20 |
| AT&T Fixed Wireless | 100 / 20 |
May also be available: Verizon.
Based on FCC filings for 684 locations within half a mile of this property.
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 | CITY OF BOULDER serves 166,080 people |
|---|---|
| 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 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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