Boulder County property record for 735 S 45th St, Boulder, CO 80305
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 1.75 ba · 1,222 sqft · built 1959 |
| Lot Size | 0.165 acres (7,184 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $80,000 (Mar 1984) |
| Tax Bill | $4,792 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 1577-08-1-03-021 |
| Primary APN | 1577-08-1-03-021 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 1.75 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 5 Rooms |
| Stories | 1 Story |
| Building Area | 1,222 sqft Living Area |
| Gross Area | 2,444 sqft |
| 1st Floor Area | 1,222 sqft |
| Basement Area | 1,222 sqft |
| Interior Walls | Plaster |
| Year Built | Built 1959 |
|---|---|
| Effective Year Built | Effective 1970 |
| Architectural Style | Ranch |
| Exterior Material | Combination |
| Construction Type | Masonry / Concrete Block |
| Lot Area | 7,184 sqft (0.165 acres) |
| Porch | Porch |
| Porch Area | 132 sqft |
| Heating System | Forced Air with A/C |
|---|
| Account Number | R0014372 |
|---|---|
| Street Address | 735 S 45TH ST |
| City | BOULDER |
| State | CO |
| Zip | 80305-6053 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT 21 BLK 3 MARTIN ACRES 3 |
| Legal Range | 70 |
| Legal Township | 1S |
| Legal Section | 05 |
| Legal Subdivision | MARTIN ACRES 3 - BO |
| Legal Block | 3 |
| Legal Lot Number | 21 |
| Jurisdiction | BOULDER CO |
| Township / Civil Division | BOULDER |
| Census Block Group | 3 |
| Census Block | 3001 |
| Census Tract | 12508 |
Source: Boulder County records · APN 1577-08-1-03-021
Assessment roll updated June 15, 2026 · Last verified June 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 2425 CANYON BLVD, 200, BOULDER, CO 80302-6736 |
| Owner Type | Individual |
| Vesting | Joint Tenants |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Sale | Mar 01, 1984 · Amount on Record |
| Deed Sale | Mar 01, 1984 · Amount on Record |
| Prior Sale | Nov 29, 1977 · Amount on Record |
| Deed Document Number | 1984606654 |
| Last Transfer Date | Sep 22, 1998 |
| Transfer Doc | 0001851763 |
| Record Updated | Sep 20, 2026 |
Source: Boulder County records · Assessment roll updated June 15, 2026 · Last verified June 2026
| Type | Name |
|---|---|
| State | Colorado |
| County | Boulder County |
| Municipality | Boulder City |
| Unified School District | Boulder Valley School District RE-2 (PK - 12) |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $53,768 (+8.8%) Land $32,416 Building $21,352 | $790,700 (-) Land $476,700 Building $314,000 | |
| 2025 | $4,792.00 (+1.4%) | $49,419 (-14.13%) Land $29,794 Building $19,625 | $790,700 (-7.95%) Land $476,700 Building $314,000 |
| 2023 | $4,726.00 (+10.78%) | $57,554 (+27.5%) Land $35,209 Building $22,345 | $859,000 (+32.26%) Land $525,500 Building $333,500 |
| 2022 | $4,266.00 | $45,140 Land $26,215 Building $18,925 | $649,500 Land $377,200 Building $272,300 |
Source: FEMA National Flood Hazard Layer as of October 14, 2026 · FEMA NFIP claims and policies as of September 2026 · USDA Forest Service Wildfire Risk to Communities as of 2024 · Last verified October 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 | 5 in force |
| Wildfire Risk | Moderate above 45% of the US · lower than 72% of Colorado |
|---|---|
| Wildfire Likelihood | 0.09% annual chance |
| Exposure | Indirect within ember reach |
| Adjoins Burnable Land | Yes |
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: FCC Broadband Data Collection as of December 31, 2025 · Last verified October 2026
| Provider | Max Down / Up (Mbps) |
|---|---|
| Ayva Fixed Wireless | 2,500 / 2,500 |
| Lumen Technologies Fiber | 2,000 / 1,000 |
| Xfinity Cable | 2,000 / 250 |
| Verizon Fixed Wireless | 300 / 20 |
| Live Wire Networks Fixed Wireless | 250 / 100 |
May also be available: AT&T, T-Mobile USA.
Based on FCC filings for 604 locations within half a mile of this property.
Source: EPA Safe Drinking Water Information System as of 2026 Q3 · EPA water system boundaries as of March 2026 · Last verified October 2026
| Water System | CITY OF BOULDER serves 166,080 people |
|---|---|
| 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 as reported to EPA, not water tested at this address; lead at the tap also depends on the building's own pipes. The full violation and enforcement history is in the system's EPA record.
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