Middlesex County and Waltham City property record for 186 River St, Waltham, MA 02453
| Property Type | Condominium |
|---|---|
| Details | 1 bd · 1 ba · 443 sqft · built 1983 |
| Lot Size | 0.83 acres (36,164 sqft) |
| Owner | Individual Name on Record |
| Last Sale | $273,000 (May 2023) |
| Tax Bill | $2,536 (2026) |
| Deeds & Mortgages | May 2023 Sale & Mortgage Apr 2017 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 166992 |
| Primary APN | 166992 |
|---|---|
| Alternative APN |
|
| Bedrooms | 1 Bed |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 3 Rooms |
| Stories | 3 Stories |
| Building Area | 443 sqft Living Area |
| Year Built | Built 1983 |
|---|---|
| Effective Year Built | Effective 1983 |
| Architectural Style | Condo/Apartment |
| Exterior Material | Brick |
| Construction Type | Concrete |
| Roof Type | Flat |
| Roof Material | Tar & Gravel |
| Lot Area | 36,164 sqft |
| Account Number | 166992 |
|---|---|
| Street Address | 186 RIVER ST |
| City | WALTHAM |
| State | MA |
| Zip | 02453-6500 |
| Property Category | Residential |
| Property Type | Residential > Condominium / Townhouse > Condominium |
| Legal Subdivision | CAROLINA COURT |
| Legal Block | 12 |
| Legal Lot Number | 14 186 |
| Jurisdiction | WALTHAM MA |
| Township / Civil Division | WALTHAM |
| Census Block Group | 2 |
| Census Block | 2004 |
| Census Tract | 368800 |
Source: Middlesex County and Waltham City records, as of October 20, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | Individual Name on Record |
|---|---|
| Mailing Address | 186 RIVER ST, WALTHAM, MA 02453-6500 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Date | Document |
|---|---|
| May 15, 2023 | Fiduciary Deed, Transfer · Stand-Alone First Mortgage MOVEMENT MORTGAGE |
| Apr 14, 2017 | Deed of Trust, Mortgage NATIONSTAR MORTGAGE LLC |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | May 15, 2023 · Amount on Record |
| Deed Sale | May 15, 2023 · Amount on Record |
| Prior Sale | May 31, 2006 · Amount on Record |
| Deed Book / Page | 81534 / 529 |
| Record Updated | Oct 29, 2026 |
| Document Type | Fiduciary Deed |
|---|---|
| Jurisdiction | WALTHAM MA |
| Recording Date | May 15, 2023 |
| Property Address | 186 RIVER ST, WALTHAM, MA 02453-6500 |
| Document Number | 081534-529 |
| Book / Page | 81534 / 529 |
| Instrument Date | May 15, 2023 |
| Instrument | 49927 |
| Transaction Type | Transfer |
| Record Updated | Nov 20, 2025 |
| Amount | Amount Recorded |
|---|---|
| Downpayment | Downpayment on Record |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $0.00 |
| Amount Accuracy | Full Amount Stated |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 186 RIVER ST # UT186, UT186, WALTHAM, MA 02453-6500 |
| Document Number | 0000049928 |
|---|---|
| Date | May 15, 2023 |
| Instrument | 49928 |
| Name | MOVEMENT MORTGAGE |
|---|---|
| Type | Mortgage Company |
| Type | Stand-Alone First Mortgage |
|---|---|
| Amount | Amount Recorded |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | WALTHAM MA |
| Property Address | 186 RIVER ST, WALTHAM, MA 02453-6500 |
| Transaction Type | Mortgage |
| Record Updated | Feb 5, 2021 |
| Name | Verified Name |
|---|
| Document Number | 69139-53 |
|---|---|
| Date | Apr 14, 2017 |
| Book Page | 69139/53 |
| Instrument | 54348 |
| Name | NATIONSTAR MORTGAGE LLC |
|---|---|
| Type | Mortgage Company |
| Amount | Amount Recorded |
|---|---|
| Term | 360 Months |
| Due | Apr 1, 2047 |
Source: Middlesex County and Waltham City assessment roll, as of April 14, 2026
| Type | Name |
|---|---|
| State | Massachusetts |
| County | Middlesex County |
| Municipality | Waltham City |
| Unified School District | Waltham School District (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $2,536.00 (+7.23%) | $245,700 (+2.03%) Building $245,700 | |
| 2025 | $2,365.00 (+8.49%) | $240,800 (+6.5%) Building $240,800 | $292,125 (+4.13%) |
| 2024 | $2,180.00 (-2.11%) | $226,100 (+4.77%) Building $226,100 | $280,535 |
| 2023 | $2,227.00 | $215,800 Building $215,800 |
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 September 10, 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Nearest Special Flood Hazard Area | Zone AE, within 500 ft |
| Flood Insurance Requirement | Not required lenders may require it |
Values are read at the parcel center point; lenders make the official flood determination.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 99.1% of the US · lower than 98.7% of Massachusetts |
|---|---|
| Wildfire Likelihood | Under 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 | WALTHAM WATER DEPARTMENT serves 65,218 people · EPA ID MA3308000 |
|---|---|
| Water Source | Purchased surface water from MWRA |
| Last State Inspection | Jun 2024 |
| Lead | 2 ppb (2025) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| 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 203 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Verizon Fiber | 2,300 / 2,300 |
| Xfinity Cable | 2,000 / 2,000 |
| Astound Broadband Cable | 1,500 / 50 |
| AT&T Fixed Wireless | 100 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
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