Lawrence County property record for 136 Mortensen Ln, Spearfish, SD 57783
| Property Type | Single Family Home |
|---|---|
| Details | 3 ba · 1,748 sqft · built 1974 |
| Lot Size | 0.98 acres (42,689 sqft) |
| Owner | 2 Individual Names on Record |
| Tax Bill | $2,949 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 32320-00090-106-03 |
| Primary APN | 32320-00090-106-03 |
|---|---|
| Alternative APN |
|
| Full Baths | 3 Baths |
|---|---|
| Plumbing Fixtures | 9 Plumbing Fixtures |
| Building Area | 1,748 sqft Living Area |
| 1st Floor Area | 1,748 sqft |
| Year Built | Built 1974 |
|---|---|
| Effective Year Built | Effective 1974 |
| Lot Area | 42,689 sqft (0.98 acres) |
| Lot Dimensions | 66 ft deep x 14 ft wide |
| Account Number | R18357 |
|---|---|
| Street Address | 136 MORTENSEN LN |
| City | SPEARFISH |
| State | SD |
| Zip | 57783-1015 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | HILLSVIEW ADDITION LOT P2 PLAT 2014-05185 SERIAL 0359772G, TITLE #11452101, ACRES 0.98, MAKE HOMARK, MODEL 14X66, YEAR 1974 |
| Legal Subdivision | HILLSVIEW ADDITION |
| Legal Tract | 2 |
| Legal Lot Number | P2 |
| Jurisdiction | LAWRENCE SD |
| Township / Civil Division | SPEARFISH |
| Census Block Group | 2 |
| Census Block | 2014 |
| Census Tract | 966301 |
Source: Lawrence County records, as of May 27, 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 | PO BOX 378, SPEARFISH, SD 57783-0378 |
| Owner Type | Individual |
| Deed Names | 2 Names on Deed |
|---|---|
| Record Updated | Sep 20, 2026 |
Source: Lawrence County assessment roll, as of September 2, 2025
| Type | Name |
|---|---|
| State | South Dakota |
| County | Lawrence County |
| Municipality | Spearfish City |
| Unified School District | Spearfish School District 40-2 (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $2,949.00 (+0.03%) | $225,620 (+32.56%) Land $82,210 Building $143,410 | |
| 2024 | $2,948.00 (+6.2%) | ||
| 2023 | $205,810 Land $55,960 Building $149,850 | ||
| 2022 | $2,776.00 | $170,200 Land $52,210 Building $117,990 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
Source: FEMA National Flood Hazard Layer, effective April 29, 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 |
| Flood Insurance Cost | Premium on Record median of 10 policies |
| Community Rating System | Class 9 (5% premium discount) |
| Nearby Flood Policies | 10 in force |
| Nearby Flood Claims | 3 (1997–2013) |
| Claims Outside the SFHA | 1 of 3 |
| Most Recent Claim | Jun 2013 · rainfall accumulation |
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 | Moderate above 47% of the US · lower than 65% of South Dakota |
|---|---|
| Wildfire Likelihood | 0.08% annual chance |
| Exposure | Direct burnable vegetation |
Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.
Source: FCC Broadband Data Collection, based on 115 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Midco Cable | 1,250 / 250 |
| Bluepeak Cable · Fiber in parts of the area | 1,000 / 30 |
| Wisp West Fixed Wireless | 100 / 20 |
| AT&T Fixed Wireless | 100 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: Verizon.
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