Boulder County property record for 123 Alder Ln, Boulder, CO 80304
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2.75 ba · 2,994 sqft · built 1971 |
| Lot Size | 1.14 acres (49,919 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $270,000 (May 1991) |
| Tax Bill | $9,089 (2025) |
| Deeds & Mortgages | Feb 2017 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 1461-23-0-11-008 |
| Primary APN | 1461-23-0-11-008 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2.75 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 8 Rooms |
| Stories | 2 Stories |
| Building Area | 2,994 sqft Living Area |
| Gross Area | 4,964 sqft |
| 1st Floor Area | 1,906 sqft |
| Upper Floors Area | 340 sqft |
| Basement Area | 1,382 sqft |
| Finished Basement | 748 sqft |
| Unfinished Basement | 634 sqft |
| Interior Walls | Wallboard/Drywall |
| Year Built | Built 1971 |
|---|---|
| Effective Year Built | Effective 1971 |
| Architectural Style | A-Frame |
| Exterior Material | Wood Shingle |
| Construction Type | Frame |
| Lot Area | 49,919 sqft |
| Garage Type | Attached |
| Garage Area | 1,336 sqft |
| Parking Spaces | 5 Parking Spaces |
| Deck Area | 337 sqft |
| Patio Area | 787 sqft |
| Heating System | Hot Water |
|---|
| Account Number | R0034685 |
|---|---|
| Street Address | 123 ALDER LN |
| City | BOULDER |
| State | CO |
| Zip | 80304-0403 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT 405 PINE BROOK HILLS 7 & SLY 50 FT LOT 401 & SLY 80 FT LOT 400 ID 34588 COMBINED HERE |
| Legal Range | 71 |
| Legal Township | 1N |
| Legal Section | 23 |
| Legal Subdivision | PINE BROOK HILLS 7 |
| Legal Block | 2 |
| Legal Lot Number | 405 |
| Jurisdiction | BOULDER CO |
| Township / Civil Division | BALD MOUNTAIN |
| Census Block Group | 2 |
| Census Block | 2005 |
| Census Tract | 13704 |
123 Alder Ln is owned and occupied by two individuals who bought it in May 1991.
Source: Boulder County records, as of September 18, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 123 ALDER LN, BOULDER, CO 80304-0403 |
| 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 | 2 Names on Deed |
|---|---|
| Last Sale | May 30, 1991 · Amount on File |
| Deed Sale | May 30, 1991 · Amount on File |
| Prior Sale | Feb 21, 1990 · Amount on File |
| Deed Document Number | 19911106307 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | BOULDER CO |
| Property Address | 123 ALDER LN, BOULDER, CO 80304-0403 |
| Transaction Type | Mortgage |
| Record Updated | Feb 5, 2021 |
| Title Company | SERVICELINK |
| Name | Verified Name |
|---|
| Document Number | 0003577062 |
|---|---|
| Date | Feb 27, 2017 |
| Instrument | 3577062 |
| Name | JPMORGAN CHASE BANK NA |
|---|---|
| Type | Bank |
| Address | COLUMBUS, OH 43240 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Mar 1, 2047 |
The 2025 property tax bill for 123 Alder Ln was $9,089.
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 | $95,710 (+3.65%) Land $17,598 Building $78,112 | $1,477,500 (-) Land $328,800 Building $1,148,700 | |
| 2025 | $9,089.00 | $92,344 Land $20,550 Building $71,794 | $1,477,500 Land $328,800 Building $1,148,700 |
| 2023 | $9,034.00 (+23.45%) | $105,070 (+39.71%) Land $20,777 Building $84,293 | $1,568,200 (+44.92%) Land $310,100 Building $1,258,100 |
| 2022 | $7,318.00 | $75,206 Land $16,346 Building $58,860 | $1,082,100 Land $235,200 Building $846,900 |
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 123 Alder Ln in Zone X, an area of minimal flood risk, though there have been 1 flood claim nearby since 2013.
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 |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Community Rating System | Class 5 (25% premium discount) |
| Nearby Flood Policies | 6 in force |
| Nearby Flood Claims | 1 (2013) |
| Most Recent Claim | Sep 2013 · Severe Storms, Flooding, Landslides, And Mudslides |
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 123 Alder Ln is very high, ranking above 94% of the US, with a 1% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Very High above 94% of the US · above 97.5% of Colorado |
|---|---|
| Wildfire Likelihood | 1% annual chance |
| Exposure | Direct burnable vegetation |
Insurers in high-risk areas may require mitigation or decline coverage; check availability before making an offer.
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 | PINE BROOK HILLS WD serves 1,100 people · EPA ID CO0107610 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Dec 2022 |
| Lead | Under 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, 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 50 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Ayva Networks Fixed Wireless · Fiber in parts of the area | 2,500 / 2,500 |
| Xfinity Cable | 1,200 / 35 |
May also be available: LiveWireNet, T-Mobile, Verizon, Visionary Broadband.
5G (outdoors only) and 4G LTE
Search by:
By searching, you agree to: Terms • Privacy • Disclosures