Boulder County property record for 1427 18th St, Boulder, CO 80302
| Property Type | Multi-Family Dwellings |
|---|---|
| Details | 11 bd · 5.5 ba · 4,112 sqft · built 1947 |
| Lot Size | 0.112 acres (4,890 sqft) |
| Owner | Company Name on Record |
| Last Sale | $2,450,000 (May 2022) |
| Tax Bill | $13,274 (2025) |
| Deeds & Mortgages | May 2022 Sale & Mortgage |
| Flood Zone | Zone X (moderate risk) |
| APN | 1463-31-1-00-030 |
| Primary APN | 1463-31-1-00-030 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 11 Beds |
|---|---|
| Full Baths | 5.5 Baths |
| Half Baths | 2 Half Baths |
| Total Rooms | 17 Rooms |
| Units | 2 Units |
| Stories | 2 Stories |
| Building Area | 4,112 sqft Living Area |
| 1st Floor Area | 1,056 sqft |
| Upper Floors Area | 3,056 sqft |
| Interior Walls | Wallboard/Drywall |
| Year Built | Built 1947 |
|---|---|
| Effective Year Built | Effective 1985 |
| Architectural Style | A-Frame |
| Exterior Material | Wood Shingle |
| Construction Type | Masonry / Concrete Block |
| Roof Material | Asphalt |
| Lot Area | 4,890 sqft (0.112 acres) |
| Deck Area | 548 sqft |
| Heating System | Forced Air with A/C |
|---|
| Account Number | R0008033 |
|---|---|
| Street Address | 1427 18TH ST |
| City | BOULDER |
| State | CO |
| Zip | 80302-6792 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Multi-Family Dwellings |
| Legal Description | TRACT 131-B LESS B-1 BO 31-1N-70 PER DEED 1665915 12/23/96 BCR |
| Legal Range | 70 |
| Legal Township | 1N |
| Legal Section | 31 |
| Legal Subdivision | TR, NBR 158, 160, 162 |
| Legal Tract | 131-B |
| Legal Block | 2 |
| 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 | 3320 MARTIN DR, BOULDER, CO 80305-3447 |
| Owner Type | Company |
| Vesting | Limited Liability Company |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | May 9, 2022 · Amount on Record |
| Deed Sale | May 9, 2022 · Amount on Record |
| Prior Sale | Jan 23, 2013 · Amount on Record |
| Deed Document Number | 20223960733 |
| Prior Transfer Date | Mar 5, 2012 |
| Prior Transfer Doc | 0003208654 |
| Record Updated | Oct 29, 2026 |
| Document Type | Warranty Deed |
|---|---|
| Jurisdiction | BOULDER CO |
| Recording Date | May 9, 2022 |
| Property Address | 1427 18TH ST, BOULDER, CO 80302-6792 |
| Document Number | 0003960733 |
| Instrument Date | Apr 25, 2022 |
| Instrument | 3960733 |
| Transaction Type | Transfer |
| Record Updated | Mar 13, 2026 |
| Title Company | FIRST AMERICAN TITLE, FIRST AMERICAN |
| Amount | Amount Recorded |
|---|---|
| Downpayment | Downpayment on Record |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $245.00 |
| Amount Accuracy | Full Amount Stated |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 3320 MARTIN DR, BOULDER, CO 80305-3447 |
| Document Number | 0003960735 |
|---|---|
| Date | May 9, 2022 |
| Instrument | 3960735 |
| Name | FIRSTBANK |
|---|---|
| Type | Bank |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 360 Months |
| Due | May 1, 2052 |
| Min Rate At Change | 3.75% |
|---|---|
| Max Rate At Change | 7% |
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 | $143,942 (+5.32%) Land $58,364 Building $85,578 | $2,186,800 (-) Land $928,300 Building $1,258,500 | |
| 2025 | $13,274.00 (+4.66%) | $136,675 (-5.95%) Land $58,019 Building $78,656 | $2,186,800 (+0.83%) Land $928,300 Building $1,258,500 |
| 2024 | $12,683.00 (+1.82%) | ||
| 2023 | $12,456.00 (+19.16%) | $145,316 (+31.94%) Land $59,496 Building $85,820 | $2,168,900 (+33.91%) Land $888,000 Building $1,280,900 |
| 2022 | $10,453.00 | $110,140 Land $48,933 Building $61,207 | $1,619,700 Land $719,600 Building $900,100 |
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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