Boulder County property record for 1431 18th St, Boulder, CO 80302
| Property Type | Multi-Family Dwellings |
|---|---|
| Details | 10 bd · 4.75 ba · 3,710 sqft · built 1900 |
| Lot Size | 0.174 acres (7,586 sqft) |
| Owner | Company Name on Record |
| Last Sale | $405,000 (May 1994) |
| Tax Bill | $11,201 (2025) |
| Flood Zone | Zone X (moderate risk) |
| APN | 1463-31-1-08-003 |
| Primary APN | 1463-31-1-08-003 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 10 Beds |
|---|---|
| Full Baths | 4.75 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 19 Rooms |
| Units | 4 Units |
| Building Area | 3,710 sqft Living Area |
| 1st Floor Area | 2,232 sqft |
| Upper Floors Area | 1,478 sqft |
| Interior Walls | Wallboard/Drywall |
| Year Built | Built 1900 |
|---|---|
| Effective Year Built | Effective 1956 |
| Architectural Style | A-Frame |
| Exterior Material | Wood Shingle |
| Construction Type | Frame |
| Lot Area | 7,586 sqft (0.174 acres) |
| Porch | Porch |
|---|---|
| Porch Area | 180 sqft |
| Deck Area | 473 sqft |
| Patio Area | 569 sqft |
| Heating System | Forced Air with A/C |
|---|
| Account Number | R0092786 |
|---|---|
| Street Address | 1431 18TH ST |
| City | BOULDER |
| State | CO |
| Zip | 80302-6400 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Multi-Family Dwellings |
| Legal Description | LOT 2 & 3 LONDON PLACE ID 92785 COMBINED HERE |
| Legal Range | 70 |
| Legal Township | 1N |
| Legal Section | 31 |
| Legal Subdivision | LONDON PLACE - BO |
| Legal Block | 2 |
| Legal Lot Number | 3 |
| Jurisdiction | BOULDER CO |
| Township / Civil Division | BOULDER |
| Census Block Group | 2 |
| Census Block | 2006 |
| Census Tract | 12300 |
Source: Boulder County records, as of September 18, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | Company Name on Record |
|---|---|
| Mailing Address | 26 PADDINGTON WAY, CONROE, TX 77384-4494 |
| Owner Type | Company |
| Vesting | Trust, Living Trust |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | May 11, 1994 · Amount on Record |
| Deed Sale | May 11, 1994 · Amount on Record |
| Prior Sale | Feb 16, 1988 |
| Deed Document Number | 19941426010 |
| Last Transfer Date | Nov 30, 2005 |
| Transfer Doc | 0002751697 |
| Record Updated | Oct 29, 2026 |
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 | $119,367 (+4.63%) Land $55,311 Building $64,056 | $1,825,400 (-) Land $883,400 Building $942,000 | |
| 2025 | $11,201.00 (+5.24%) | $114,088 (-5.87%) Land $55,213 Building $58,875 | $1,825,400 (+0.91%) Land $883,400 Building $942,000 |
| 2024 | $10,643.00 (+1.87%) | ||
| 2023 | $10,448.00 (+10.49%) | $121,203 (+22.92%) Land $66,451 Building $54,752 | $1,809,000 (+24.76%) Land $991,800 Building $817,200 |
| 2022 | $9,456.00 | $98,602 Land $41,468 Building $57,134 | $1,450,017 Land $609,817 Building $840,200 |
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.
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 moderate risk |
|---|---|
| 500-Year Floodplain | Yes 0.2% annual chance |
| Nearest Special Flood Hazard Area | Zone AE, within 100 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Flood Insurance Cost | Premium on Record median of 32 individual policies |
| Community Rating System | Class 5 (25% premium discount) |
| Nearby Flood Policies | 70 units insured incl. 38 condo units |
| Nearby Flood Claims | 23 (2013) |
| Most Recent Claim | Oct 2013 · rainfall accumulation |
| 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.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 93% of the US · lower than 97.2% of Colorado |
|---|---|
| Wildfire Likelihood | 0.01% annual chance |
| Exposure | None beyond 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 432 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Ayva Networks Fixed Wireless | 2,500 / 2,500 |
| CenturyLink Fiber · DSL in parts of the area | 2,000 / 1,000 |
| Xfinity Cable | 2,000 / 250 |
| Verizon Fixed Wireless | 300 / 20 |
| LiveWireNet Fixed Wireless | 250 / 100 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T Fixed Wireless | 100 / 20 |
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