Boulder County property record for 325 S 43rd St, Boulder, CO 80305
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 1.5 ba · 1,372 sqft · built 1957 |
| Lot Size | 0.155 acres (6,770 sqft) |
| Owner | Trust Name on File |
| Last Sale | $205,000 (Jan 2000) |
| Tax Bill | $4,495 (2025) |
| Deeds & Mortgages | Nov 2023 Transfer Nov 2021 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 1577-05-4-25-028 |
| Primary APN | 1577-05-4-25-028 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 1.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 6 Rooms |
| Stories | 1 Story |
| Building Area | 1,372 sqft Living Area |
| 1st Floor Area | 1,372 sqft |
| Interior Walls | Wallboard/Drywall |
| Year Built | Built 1957 |
|---|---|
| Effective Year Built | Effective 1957 |
| Architectural Style | Ranch |
| Exterior Material | Brick Veneer |
| Construction Type | Masonry / Concrete Block |
| Lot Area | 6,770 sqft (0.155 acres) |
| Porch | Porch |
| Porch Area | 300 sqft |
| Heating System | Forced Air with A/C |
|---|
| Account Number | R0009887 |
|---|---|
| Street Address | 325 S 43RD ST |
| City | BOULDER |
| State | CO |
| Zip | 80305-6005 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT 28 BLK 8 MARTIN ACRES 2 |
| Legal Range | 70 |
| Legal Township | 1S |
| Legal Section | 05 |
| Legal Subdivision | MARTIN ACRES 2 - BO |
| Legal Block | 8 |
| Legal Lot Number | 28 |
| Jurisdiction | BOULDER CO |
| Township / Civil Division | BOULDER |
| Census Block Group | 3 |
| Census Block | 3009 |
| Census Tract | 12507 |
325 S 43rd St is held in a trust since April 2004.
Source: Boulder County records, as of September 18, 2026
| Owner of Record | Trust Name on File |
|---|---|
| Mailing Address | 320 S 39TH ST, BOULDER, CO 80305-5412 |
| Owner Type | Company |
| Vesting | Trust, Family Trust |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Date | Document |
|---|---|
| Nov 8, 2023 | Intrafamily Transfer, Transfer |
| Nov 29, 2021 | Deed of Trust, Mortgage · Conventional Mortgage CHANGE LENDING LLC |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Jan 19, 2000 · Amount on File |
| Deed Sale | Jan 19, 2000 · Amount on File |
| Prior Sale | Oct 28, 1964 · Amount on File |
| Deed Document Number | 20002015642 |
| Last Transfer Date | Apr 28, 2004 |
| Transfer Doc | 0002583965 |
| Record Updated | Oct 29, 2026 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | BOULDER CO |
| Recording Date | Nov 8, 2023 |
| Property Address | 325 S 43RD ST, BOULDER, CO 80305-6005 |
| Document Number | 0004027782 |
| Instrument Date | Nov 8, 2023 |
| Instrument | 4027782 |
| Transaction Type | Transfer |
| Record Updated | Dec 6, 2023 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | No Consideration Stated |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Family Trust |
| Address | 320 S 39TH ST, BOULDER, CO 80305-5412 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | BOULDER CO |
| Property Address | 325 S 43RD ST, BOULDER, CO 80305-6005 |
| Transaction Type | Mortgage |
| Record Updated | Dec 15, 2021 |
| Title Company | FIRST AMERICAN TITLE, FIRST AMERICAN TITLE INS CO |
| Name | Verified Name |
|---|---|
| Address | 320 S 39TH ST, BOULDER, CO 80305-5412 |
| Document Number | 0003930674 |
|---|---|
| Date | Nov 29, 2021 |
| Instrument | 3930674 |
| Name | CHANGE LENDING LLC |
|---|---|
| Type | Mortgage Company |
| Address | IRVINE, CA 92606 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Dec 1, 2051 |
The 2025 property tax bill for 325 S 43rd St was $4,495, up 2.1% from the year before.
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 | $45,621 (-1.48%) Land $32,157 Building $13,464 | $740,900 (-) Land $542,900 Building $198,000 | |
| 2025 | $4,495.00 (+2.07%) | $46,306 Land $33,931 Building $12,375 | $740,900 Land $542,900 Building $198,000 |
| 2024 | $4,404.00 (+1.83%) | ||
| 2023 | $4,325.00 (+10.33%) | $52,903 (+27.74%) Land $39,758 Building $13,145 | $789,600 (+32.51%) Land $593,400 Building $196,200 |
| 2022 | $3,920.00 | $41,415 Land $29,489 Building $11,926 | $595,900 Land $424,300 Building $171,600 |
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 325 S 43rd St in Zone X, an area of minimal flood risk, though there have been 7 flood claims nearby since 1979.
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 | 7 (1979–2022) |
| Claims Outside the SFHA | 5 of 7 |
| Most Recent Claim | Jul 2022 · 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.
Wildfire risk around 325 S 43rd St is low, with a 0.03% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 80% of the US · lower than 91% of Colorado |
|---|---|
| Wildfire Likelihood | 0.03% 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 678 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 |
May also be available: AT&T.
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