Boulder County property record for 4077 Welsh Pl, Boulder, CO 80301
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 1 ba · 2,004 sqft · built 1930 |
| Lot Size | 0.76 acres (33,119 sqft) |
| Owner | 2 Individual Names on File |
| Tax Bill | $6,408 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 1463-17-3-06-001 |
| Primary APN | 1463-17-3-06-001 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 8 Rooms |
| Stories | 1 Story |
| Building Area | 2,004 sqft Living Area |
| 1st Floor Area | 2,004 sqft |
| Interior Walls | Wallboard/Drywall |
| Year Built | Built 1930 |
|---|---|
| Effective Year Built | Effective 1980 |
| Architectural Style | Ranch |
| Exterior Material | Block |
| Construction Type | Masonry / Concrete Block |
| Lot Area | 33,119 sqft (0.76 acres) |
| Porch | Porch |
| Porch Area | 300 sqft |
| Heating System | Forced Air with A/C |
|---|
| Account Number | R0030801 |
|---|---|
| Street Address | 4077 WELSH PL |
| City | BOULDER |
| State | CO |
| Zip | 80301-1610 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT 4 GOULD & SMALL ELY PT OF TRACTS 2472B & 2477A PER DEED 1742339 BCR |
| Legal Range | 70 |
| Legal Township | 1N |
| Legal Section | 17 |
| Legal Subdivision | GOULD - BOV |
| Legal Tract | 2472 |
| Legal Block | 3 |
| Legal Lot Number | 4 |
| Jurisdiction | BOULDER CO |
| Township / Civil Division | BOULDER |
| Census Block Group | 3 |
| Census Block | 3036 |
| Census Tract | 12701 |
4077 Welsh Pl is owned by two individuals who acquired it in October 1979.
Source: Boulder County records, as of September 18, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 12142 APPLEWOOD CT, BROOMFIELD, CO 80020-5393 |
| Owner Type | Individual |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Oct 10, 1979 |
| Deed Sale | Oct 10, 1979 |
| Prior Sale | Dec 26, 1978 |
| Deed Document Number | 1979364424 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 4077 Welsh Pl was $6,408.
Source: Boulder County assessment roll, as of September 18, 2026
| Type | Name |
|---|---|
| State | Colorado |
| County | Boulder County |
| Unified School District | Boulder Valley School District RE-2 (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $64,824 (+1.36%) Land $57,439 Building $7,385 | $1,023,300 (-) Land $914,700 Building $108,600 | |
| 2025 | $6,408.00 | $63,957 Land $57,169 Building $6,788 | $1,023,300 Land $914,700 Building $108,600 |
| 2023 | $5,830.00 (+23.28%) | $74,478 (+34.46%) Land $59,148 Building $15,330 | $1,111,600 (+39.47%) Land $882,800 Building $228,800 |
| 2022 | $4,729.00 | $55,391 Land $49,852 Building $5,539 | $797,000 Land $717,300 Building $79,700 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 4077 Welsh Pl in Zone X, an area of minimal flood risk, within 500 ft of a high-risk flood zone.
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 |
| Flood Insurance Cost | Premium on File 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 |
|
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.
Wildfire risk around 4077 Welsh Pl is moderate, ranking above 51% of the US, with a 0.2% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Moderate above 51% of the US · lower than 66% of Colorado |
|---|---|
| Wildfire Likelihood | 0.2% annual chance |
| Exposure | Direct burnable vegetation |
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 224 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 |
| LiveWireNet Fixed Wireless | 250 / 100 |
| CenturyLink DSL · Fiber in parts of the area | 140 / 20 |
| AT&T Fixed Wireless | 100 / 20 |
May also be available: Verizon.
5G (outdoors only) and 4G LTE
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