Boulder County property record for 100 S 36th St, Boulder, CO 80305
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 1 ba · 1,547 sqft · built 1955 |
| Lot Size | 0.179 acres (7,815 sqft) |
| Owner | 2 Individual Names on Record |
| Last Sale | $370,000 (Oct 2009) |
| Tax Bill | $5,274 (2025) |
| Deeds & Mortgages | May 2020 Mortgage Jul 2019 Line of Credit |
| Flood Zone | Zone X (moderate risk) |
| APN | 1577-05-3-06-001 |
| Primary APN | 1577-05-3-06-001 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 5 Rooms |
| Stories | 1 Story |
| Building Area | 1,547 sqft Living Area |
| 1st Floor Area | 1,053 sqft |
| Upper Floors Area | 494 sqft |
| Interior Walls | Wallboard/Drywall |
| Year Built | Built 1955 |
|---|---|
| Effective Year Built | Effective 1995 |
| Architectural Style | Ranch |
| Exterior Material | Brick Veneer |
| Construction Type | Masonry / Concrete Block |
| Roof Material | Asphalt |
| Lot Area | 7,815 sqft (0.179 acres) |
| Garage Type | Carport |
| Garage Area | 290 sqft |
| Carport | Carport |
| Carport Area | 290 sqft |
| Deck Area | 105 sqft |
| Total Buildings | 2 Buildings |
| Heating System | Forced Air with A/C |
|---|
| Account Number | R0009891 |
|---|---|
| Street Address | 100 S 36TH ST |
| City | BOULDER |
| State | CO |
| Zip | 80305-5437 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT 1 BLK 8 MARTIN ACRES 1 |
| Legal Range | 70 |
| Legal Township | 1S |
| Legal Section | 05 |
| Legal Subdivision | MARTIN ACRES 1 - BO |
| Legal Block | 8 |
| Legal Lot Number | 1 |
| Jurisdiction | BOULDER CO |
| Township / Civil Division | BOULDER |
| Census Block Group | 3 |
| Census Block | 3000 |
| Census Tract | 12507 |
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 | 2 Individual Names on Record |
|---|---|
| Mailing Address | 100 S 36TH ST, BOULDER, CO 80305-5437 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Date | Document |
|---|---|
| May 7, 2020 | Deed of Trust, Mortgage · Conventional with PMI FIRSTBANK |
| Jul 16, 2019 | Trustee's Deed, Construction Loan · Line of Credit FIRSTBANK |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Oct 6, 2009 · Amount on Record |
| Deed Sale | Oct 6, 2009 · Amount on Record |
| Prior Sale | Sep 10, 2001 · Amount on Record |
| Deed Document Number | 20093034476 |
| Prior Transfer Date | Sep 25, 2009 |
| Prior Transfer Doc | 0003034476 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | BOULDER CO |
| Property Address | 100 S 36TH ST, BOULDER, CO 80305-5437 |
| Document Number | 0003783700 |
| Instrument Date | May 7, 2020 |
| Transaction Type | Mortgage |
| Record Updated | Jun 26, 2020 |
| Title Company | LAND TITLE GUARANTEE |
| Name | Verified Name |
|---|---|
| Address | 100 S 36TH ST BOULDER CO 803055437, BOULDER, CO 80305-5437 |
| Document Number | 0003783700 |
|---|---|
| Date | May 13, 2020 |
| Instrument | 3783700 |
| Name | FIRSTBANK |
|---|---|
| Type | Bank |
| Address | LAKEWOOD, CO 80215 |
| Type | Conventional with PMI |
|---|---|
| Amount | Amount Recorded |
| Term | 360 Months |
| Due | May 12, 2050 |
| Document Type | Trustee's Deed |
|---|---|
| Jurisdiction | BOULDER CO |
| Recording Date | Jul 16, 2019 |
| Property Address | 100 S 36TH ST, BOULDER, CO 80305-5437 |
| Instrument Date | Jul 8, 2019 |
| Instrument | 3724267 |
| Transaction Type | Construction Loan |
| Record Updated | Jul 23, 2019 |
| Title Company | LAND TITLE GUARANTEE |
| Name | Verified Name |
|---|---|
| Address | 100 S 36TH ST BOULDER CO 803055437, BOULDER, CO 80305-5437 |
| Document Number | 0003724267 |
|---|---|
| Date | Jul 16, 2019 |
| Instrument | 3724267 |
| Name | FIRSTBANK |
|---|---|
| Type | Bank |
| Address | LAKEWOOD, CO 80215 |
| Type | Line of Credit |
|---|---|
| Amount | Amount Recorded |
| Term | 12 Months |
| Due | Jul 15, 2020 |
| Rate Type | Adjustable Rate |
|---|
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 | $55,420 (+0.19%) Land $34,592 Building $20,828 | $885,000 (-) Land $578,700 Building $306,300 | |
| 2025 | $5,274.00 (+4.17%) | $55,313 (-11.25%) Land $36,169 Building $19,144 | $885,000 (-4.86%) Land $578,700 Building $306,300 |
| 2023 | $5,063.00 (+8.58%) | $62,324 (+24.1%) Land $41,795 Building $20,529 | $930,200 (+28.73%) Land $623,800 Building $306,400 |
| 2022 | $4,663.00 | $50,220 Land $31,365 Building $18,855 | $722,600 Land $451,300 Building $271,300 |
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 500 ft |
| 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.
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 | 0.01% 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 451 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 | 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 |
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