Boulder County property record for 4690 Macarthur Ln, Boulder, CO 80303
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2.75 ba · 2,858 sqft · built 1978 |
| Lot Size | 0.046 acres (2,004 sqft) |
| Owner | Individual Name on File |
| Last Sale | $130,000 (Aug 1991) |
| Tax Bill | $3,888 (2025) |
| Deeds & Mortgages | Jan 2021 Mortgage |
| Flood Zone | Zone AO (high risk) |
| APN | 1463-33-2-12-002 |
| Primary APN | 1463-33-2-12-002 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2.75 Baths |
| Half Baths | 3 Half Baths |
| Total Rooms | 9 Rooms |
| Building Area | 2,858 sqft Living Area |
| 1st Floor Area | 944 sqft |
| Upper Floors Area | 970 sqft |
| Basement Area | 944 sqft |
| Finished Basement | 944 sqft |
| Interior Walls | Wallboard/Drywall |
| Year Built | Built 1978 |
|---|---|
| Effective Year Built | Effective 1978 |
| Architectural Style | Townhouse |
| Exterior Material | Wood Shingle |
| Construction Type | Frame |
| Lot Area | 2,004 sqft (0.046 acres) |
| Garage Type | Detached |
| Garage Area | 528 sqft |
| Parking Spaces | 2 Parking Spaces |
| Deck Area | 112 sqft |
| Patio Area | 328 sqft |
| Cooling System | Central |
|---|---|
| Heating Fuel | Electric |
| Account Number | R0077967 |
|---|---|
| Street Address | 4690 MACARTHUR LN |
| City | BOULDER |
| State | CO |
| Zip | 80303-1160 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT 2 MACARTHUR PARK |
| Legal Range | 70 |
| Legal Township | 1N |
| Legal Section | 33 |
| Legal Subdivision | MACARTHUR PARK - BO |
| Legal Block | 3 |
| Legal Lot Number | 2 |
| Jurisdiction | BOULDER CO |
| Township / Civil Division | BOULDER |
| Census Block Group | 3 |
| Census Block | 3003 |
| Census Tract | 12603 |
4690 Macarthur Ln is owned and occupied by an individual who acquired it in August 2014.
Source: Boulder County records, as of September 18, 2026
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 4690 MACARTHUR LN, BOULDER, CO 80303-1160 |
| Occupancy | Owner Occupied |
| 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 | Name on Deed |
|---|---|
| Last Sale | Aug 23, 1991 · Amount on File |
| Deed Sale | Aug 23, 1991 · Amount on File |
| Prior Sale | Feb 24, 1986 · Amount on File |
| Deed Document Number | 19911125543 |
| Last Transfer Date | Aug 20, 2014 |
| Transfer Doc | 0003403869 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | BOULDER CO |
| Property Address | 4690 MACARTHUR LN, BOULDER, CO 80303-1160 |
| Transaction Type | Mortgage |
| Record Updated | Feb 15, 2021 |
| Title Company | AMROCK INC |
| Name | Verified Name |
|---|
| Document Number | 0003854372 |
|---|---|
| Date | Jan 28, 2021 |
| Instrument | 3854372 |
| Name | QUICKEN LOANS LLC |
|---|---|
| Type | Mortgage Company |
| Address | DETROIT, MI 48226 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 240 Months |
| Due | Jan 1, 2041 |
The 2025 property tax bill for 4690 Macarthur Ln was $3,888.
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 | $46,410 (-1.32%) Land $14,375 Building $32,035 | $752,500 (-) Land $281,400 Building $471,100 | |
| 2025 | $3,888.00 | $47,032 Land $17,588 Building $29,444 | $752,500 Land $281,400 Building $471,100 |
| 2023 | $2,996.00 (+8.47%) | $45,084 (+22.83%) Land $20,857 Building $24,227 | $672,900 (+27.42%) Land $311,300 Building $361,600 |
| 2022 | $2,762.00 | $36,703 Land $15,631 Building $21,072 | $528,100 Land $224,900 Building $303,200 |
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.
FEMA maps place 4690 Macarthur Ln in Zone AO, a high-risk flood area; flood insurance is required for federally backed loans.
Source: FEMA National Flood Hazard Layer, effective October 14, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone AO high risk · sheet flow 1–3 ft |
|---|---|
| 100-Year Floodplain | Yes 1% annual chance |
| Floodway | No |
| Base Flood Elevation | Varies along the reach; see FIRM |
| Flood Insurance Requirement | Required federally backed loans |
| Flood Insurance Cost | Premium on File median of 31 policies |
| Community Rating System | Class 5 (25% premium discount) |
| Nearby Flood Policies | 31 in force |
| Nearby Flood Claims | 7 (2000–2013) |
| Claims Outside the SFHA | 5 of 7 |
| 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.
The area around 4690 Macarthur Ln has no burnable land within ember reach, so its wildfire risk is not rated.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Not rated no burnable land within ember reach |
|---|
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 103 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 · Fiber in parts of the area | 2,000 / 250 |
| Verizon Fixed Wireless | 300 / 20 |
| LiveWireNet Fixed Wireless | 250 / 100 |
| AT&T Fixed Wireless | 100 / 20 |
May also be available: CenturyLink.
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