Boulder County property record for 424 Concord Ave, Boulder, CO 80304
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 1.75 ba · 2,605 sqft · built 1904 |
| Lot Size | 0.146 acres (6,343 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $2,250,000 (Oct 2025) |
| Tax Bill | $13,830 (2025) |
| Deeds & Mortgages | Oct 2025 Sale Apr 2024 Sale + 1 more |
| Flood Zone | Zone X (minimal risk) |
| APN | 1461-25-1-01-007 |
| Primary APN | 1461-25-1-01-007 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 1.75 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 8 Rooms |
| Stories | 2 Stories |
| Building Area | 2,605 sqft Living Area |
| Gross Area | 2,885 sqft |
| 1st Floor Area | 1,233 sqft |
| Upper Floors Area | 1,087 sqft |
| Basement Area | 565 sqft |
| Finished Basement | 285 sqft |
| Unfinished Basement | 280 sqft |
| Interior Walls | Wallboard/Drywall |
| Year Built | Built 1904 |
|---|---|
| Effective Year Built | Effective 2000 |
| Architectural Style | A-Frame |
| Exterior Material | Wood Shingle |
| Construction Type | Frame |
| Lot Area | 6,343 sqft (0.146 acres) |
| Garage Type | Detached |
| Garage Area | 300 sqft |
| Porch | Porch |
|---|---|
| Porch Area | 441 sqft |
| Patio Area | 532 sqft |
| Total Buildings | 2 Buildings |
| Cooling System | Central |
|---|---|
| Heating System | Forced Air with A/C |
| Account Number | R0005008 |
|---|---|
| Street Address | 424 CONCORD AVE |
| City | BOULDER |
| State | CO |
| Zip | 80304-3919 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | W 10 FT LOT 10 ALL LOT 11 & N 50 FT & E 5 FT OF S 90 FT LOT 12 BLK 10 MAXWELLS |
| Legal Range | 71 |
| Legal Township | 1N |
| Legal Section | 25 |
| Legal Subdivision | MAXWELLS - BO |
| Legal Block | 10 |
| Legal Lot Number | 10 |
| Jurisdiction | BOULDER CO |
| Township / Civil Division | BOULDER |
| Census Block Group | 4 |
| Census Block | 4003 |
| Census Tract | 12101 |
Source: Boulder County records · APN 1461-25-1-01-007
Assessment roll updated June 15, 2026 · Last verified August 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 | 424 CONCORD AVE, BOULDER, CO 80304-3919 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Joint Tenants |
| Date | Document |
|---|---|
| Oct 15, 2025 | Special Warranty Deed, Transfer LAND TITLE GUARANTY COMPANY IN, LAND TITLE GUARANTEE COMPANY |
| Apr 15, 2024 | Special Warranty Deed, Transfer |
| Oct 26, 2020 | Special Warranty Deed, Transfer · Conventional Mortgage UNIVERSAL LENDING CORP |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Sale | Oct 15, 2025 · Amount on Record |
| Deed Sale | Oct 15, 2025 · Amount on Record |
| Prior Sale | Oct 26, 2020 · Amount on Record |
| Deed Document Number | 20254105749 |
| Prior Transfer Date | Apr 04, 2024 |
| Prior Transfer Doc | 0004043728 |
| Record Updated | Sep 20, 2026 |
| Document Type | Special Warranty Deed |
|---|---|
| Jurisdiction | BOULDER CO |
| Recording Date | Oct 15, 2025 |
| Property Address | 424 CONCORD AVE, BOULDER, CO 80304-3919 |
| Document Number | 0004105749 |
| Instrument Date | Oct 14, 2025 |
| Instrument | 4105749 |
| Transaction Type | Transfer |
| Record Updated | Nov 07, 2025 |
| Title Company | LAND TITLE GUARANTY COMPANY IN, LAND TITLE GUARANTEE COMPANY |
| Amount | Amount Recorded |
|---|---|
| Tax | $225.00 |
| Amount Accuracy | Full Amount Stated |
| Additional |
|
| Name | Verified Name |
|---|---|
| Address | 10500 BRENTWOOD BLVD, BRENTWOOD, CA 94513-4019 |
| Name | Verified Name |
|---|---|
| Relationship | Joint Tenants |
| Address | 424 CONCORD AVE, BOULDER, CO 80304-3919 |
| Document Type | Special Warranty Deed |
|---|---|
| Jurisdiction | BOULDER CO |
| Recording Date | Apr 15, 2024 |
| Property Address | 424 CONCORD AVE, BOULDER, CO 80304-3919 |
| Document Number | 0004043728 |
| Instrument Date | Apr 04, 2024 |
| Instrument | 4043728 |
| Transaction Type | Transfer |
| Record Updated | May 21, 2024 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | No Consideration Stated |
| Additional |
|
| Name | Verified Name |
|---|---|
| Address | 424 CONCORD AVE, BOULDER, CO 80304-3919 |
| Name | Verified Name |
|---|---|
| Relationship | Family Revocable Trust |
| Address | 424 CONCORD AVE, BOULDER, CO 80304-3919 |
| Document Type | Special Warranty Deed |
|---|---|
| Jurisdiction | BOULDER CO |
| Recording Date | Oct 26, 2020 |
| Property Address | 424 CONCORD AVE, BOULDER, CO 80304-3919 |
| Document Number | 0003827616 |
| Instrument Date | Oct 23, 2020 |
| Instrument | 3827616 |
| Transaction Type | Transfer |
| Record Updated | Mar 31, 2022 |
| Title Company | LAND TITLE GUARANTEE CO |
| Amount | Amount Recorded |
|---|---|
| Downpayment | Downpayment on File |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $180.00 |
| Amount Accuracy | Full Amount Stated |
| Additional |
|
| Name | Verified Name |
|---|---|
| Address | 424 CONCORD AVE, 424, BOULDER, CO 80304-3919 |
| Name | Verified Name |
|---|---|
| Address | 424 CONCORD AVE, BOULDER, CO 80304-3919 |
| Document Number | 0003827617 |
|---|---|
| Date | Oct 26, 2020 |
| Instrument | 3827617 |
| Name | UNIVERSAL LENDING CORP |
|---|---|
| Type | Mortgage Company |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Nov 01, 2050 |
| Document Number | 0003827618 |
|---|---|
| Date | Oct 26, 2020 |
| Instrument | 3827618 |
| Name | SOOPER CU |
|---|---|
| Type | Credit Union |
| Address | ARVADA, CO 80003 |
| Type | Line of Credit |
|---|---|
| Amount | Amount Recorded |
| Term | 300 Months |
| Due | Oct 28, 2045 |
| Rate Type | Adjustable Rate |
|---|---|
| Change Frequency | Monthly |
Source: Boulder County records · Assessment roll updated June 15, 2026 · Last verified August 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, not market price estimates; both are a fraction of this property's market value.
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $157,814 (+8.8%) Land $106,345 Building $51,469 | $2,320,800 (-) Land $1,563,900 Building $756,900 | |
| 2025 | $13,830.00 (+0.14%) | $145,050 (-7.69%) Land $97,744 Building $47,306 | $2,320,800 (-3.32%) Land $1,563,900 Building $756,900 |
| 2024 | $13,810.00 (+1.77%) | $157,142 (-2.29%) Land $102,731 Building $54,411 | $2,400,400 (-) Land $1,588,300 Building $812,100 |
| 2023 | $13,570.00 (+26.72%) | $160,827 (+39.46%) Land $106,416 Building $54,411 | $2,400,400 (+44.66%) Land $1,588,300 Building $812,100 |
| 2022 | $10,709.00 | $115,321 Land $68,742 Building $46,579 | $1,659,300 Land $989,100 Building $670,200 |
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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