# 171 Lake St, Waltham, MA 02451

> **TL;DR:** 3bd/2ba residential multi family, $763,888 ($426/sqft), built 1930, 1,795 sqft. Est. $4,086/mo. Listed 30 days.

## Property at a Glance

| Attribute | Value |
|-----------|-------|
| Price | $763,888 |
| Price/sqft | $426 |
| Bedrooms | 3 |
| Bathrooms | 2 full |
| Square Feet | 1,795 |
| Year Built | 1930 |
| Lot Size | 4,522 sqft (0.10 acres) |
| Stories | 2 |
| Property Type | Residential Multi Family (Other) |
| Status | Active |
| Days on Market | 30 |

## Estimated Monthly Costs

| Category | Amount |
|----------|--------|
| Principal & Interest (20% down, 30-year at 6.5%) | $3,863 |
| Estimated Insurance | $223 |
| **Total** | **$4,086** |

## Property Highlights

- Built in 1930
- 0.10 acre lot
- 2 stories
- 4 parking spaces

## Description

### Agent Description
A rare turnkey 2-family with lots of options! Move into one unit and have the tenant subsidize some of your mortgage, rent out both, or tear down and rebuild. Potential to build 2 side-by-side townhomes on the existing lot (buyer to do all due diligence). The larger units feature hardwood floors, a renovated eat-in kitchen, an updated bathroom, and split air conditioning/heating units. The smaller unit features hardwood floors, a smaller eat-in kitchen, a cozy bathroom, and a separate entrance. Separate driveways allow for autonomy for each unit. Flat lot with frontage on both streets. Easy access to rt 128/95, bus 61, proximity to Lazazzero Playground and Hardy Pond, MacArthur Elementary School, and the newly built state-of-the-art Waltham High School.

## Location

- **Address:** 171 Lake St, Waltham, MA 02451
- **County:** Middlesex
- **Coordinates:** 42.404164, -71.241663
- **Google Maps:** https://www.google.com/maps?q=42.404164,-71.241663

## Listing Agent

- **Name:** Keller Williams
- **Brokerage:** Keller Williams Chestnut Hill
- **Phone:** (617) 969-9000
- **Broker Phone:** (617) 969-9000
- **Listing URL:** [View original listing](https://www.realtor.com/realestateandhomes-detail/171-Lake-St_Waltham_MA_02451_M40109-16928?f=listhub&s=MLSPIN&m=73571620&c=propsimple)

## Photos

![171 Lake St - Photo 1](http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f3055931506r.jpg)

![171 Lake St - Photo 2](http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f2311451080r.jpg)

![171 Lake St - Photo 3](http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f164526274r.jpg)

![171 Lake St - Photo 4](http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f4055971124r.jpg)

![171 Lake St - Photo 5](http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f2036357221r.jpg)

![171 Lake St - Photo 6](http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f423316078r.jpg)

![171 Lake St - Photo 7](http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f243114448r.jpg)

![171 Lake St - Photo 8](http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f2426466124r.jpg)

![171 Lake St - Photo 9](http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f2859123073r.jpg)

![171 Lake St - Photo 10](http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f1657306819r.jpg)

![171 Lake St - Photo 11](http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f2379716183r.jpg)

![171 Lake St - Photo 12](http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f2588309600r.jpg)

![171 Lake St - Photo 13](http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f4138195727r.jpg)

![171 Lake St - Photo 14](http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f2879361201r.jpg)

![171 Lake St - Photo 15](http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f2133633862r.jpg)

![171 Lake St - Photo 16](http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f3485486354r.jpg)

![171 Lake St - Photo 17](http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f3253634631r.jpg)

![171 Lake St - Photo 18](http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f1596373552r.jpg)

![171 Lake St - Photo 19](http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f758259591r.jpg)

![171 Lake St - Photo 20](http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f210007347r.jpg)

![171 Lake St - Photo 21](http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f1521781449r.jpg)

![171 Lake St - Photo 22](http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f3950516856r.jpg)

![171 Lake St - Photo 23](http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f1891102494r.jpg)

![171 Lake St - Photo 24](http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f183225659r.jpg)

![171 Lake St - Photo 25](http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f3581451216r.jpg)

![171 Lake St - Photo 26](http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f3642646754r.jpg)

![171 Lake St - Photo 27](http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f1972108674r.jpg)

![171 Lake St - Photo 28](http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f4114311695r.jpg)

---

**MLS#:** 73571620 | **Updated:** 2026-10-07
**Source:** listhub

*Copyright © 2026 MLS Property Information Network Inc. All rights reserved. All information provided by the listing agent/broker is deemed reliable but is not guaranteed and should be independently verified.*

[View on PropertySimple](https://www.propertysimple.ai/listing/171-lake-st-waltham-ma-02451-73571620)

---

## Structured Data

```json
{
  "@context": "https://schema.org",
  "@type": "RealEstateListing",
  "@id": "https://www.propertysimple.ai/listing/171-lake-st-waltham-ma-02451-73571620#listing",
  "url": "https://www.propertysimple.ai/listing/171-lake-st-waltham-ma-02451-73571620",
  "name": "171 Lake St, Waltham, MA 02451",
  "description": "A rare turnkey 2-family with lots of options! Move into one unit and have the tenant subsidize some of your mortgage, rent out both, or tear down and rebuild. Potential to build 2 side-by-side townhomes on the existing lot (buyer to do all due diligence). The larger units feature hardwood floors, a renovated eat-in kitchen, an updated bathroom, and split air conditioning/heating units. The smaller unit features hardwood floors, a smaller eat-in kitchen, a cozy bathroom, and a separate entrance. Separate driveways allow for autonomy for each unit. Flat lot with frontage on both streets. Easy access to rt 128/95, bus 61, proximity to Lazazzero Playground and Hardy Pond, MacArthur Elementary School, and the newly built state-of-the-art Waltham High School.",
  "image": [
    "http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f3055931506r.jpg",
    "http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f2311451080r.jpg",
    "http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f164526274r.jpg",
    "http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f4055971124r.jpg",
    "http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f2036357221r.jpg",
    "http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f423316078r.jpg",
    "http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f243114448r.jpg",
    "http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f2426466124r.jpg",
    "http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f2859123073r.jpg",
    "http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f1657306819r.jpg",
    "http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f2379716183r.jpg",
    "http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f2588309600r.jpg",
    "http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f4138195727r.jpg",
    "http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f2879361201r.jpg",
    "http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f2133633862r.jpg",
    "http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f3485486354r.jpg",
    "http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f3253634631r.jpg",
    "http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f1596373552r.jpg",
    "http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f758259591r.jpg",
    "http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f210007347r.jpg",
    "http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f1521781449r.jpg",
    "http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f3950516856r.jpg",
    "http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f1891102494r.jpg",
    "http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f183225659r.jpg",
    "http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f3581451216r.jpg",
    "http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f3642646754r.jpg",
    "http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f1972108674r.jpg",
    "http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f4114311695r.jpg"
  ],
  "primaryImageOfPage": {
    "@type": "ImageObject",
    "url": "http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f3055931506r.jpg",
    "caption": "171 Lake St - Waltham, MA"
  },
  "datePosted": "2026-09-08T00:00:00+00:00",
  "dateModified": "2026-10-07T03:31:57.868719+00:00",
  "mainEntity": {
    "@type": "Accommodation",
    "@id": "https://www.propertysimple.ai/listing/171-lake-st-waltham-ma-02451-73571620#property",
    "name": "171 Lake St, Waltham, MA 02451",
    "address": {
      "@type": "PostalAddress",
      "streetAddress": "171 Lake St",
      "addressLocality": "Waltham",
      "addressRegion": "MA",
      "postalCode": "02451",
      "addressCountry": "US"
    },
    "geo": {
      "@type": "GeoCoordinates",
      "latitude": 42.404164,
      "longitude": -71.241663
    },
    "image": [
      "http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f3055931506r.jpg",
      "http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f2311451080r.jpg",
      "http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f164526274r.jpg",
      "http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f4055971124r.jpg",
      "http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f2036357221r.jpg",
      "http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f423316078r.jpg",
      "http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f243114448r.jpg",
      "http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f2426466124r.jpg",
      "http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f2859123073r.jpg",
      "http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f1657306819r.jpg",
      "http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f2379716183r.jpg",
      "http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f2588309600r.jpg",
      "http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f4138195727r.jpg",
      "http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f2879361201r.jpg",
      "http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f2133633862r.jpg",
      "http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f3485486354r.jpg",
      "http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f3253634631r.jpg",
      "http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f1596373552r.jpg",
      "http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f758259591r.jpg",
      "http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f210007347r.jpg",
      "http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f1521781449r.jpg",
      "http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f3950516856r.jpg",
      "http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f1891102494r.jpg",
      "http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f183225659r.jpg",
      "http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f3581451216r.jpg",
      "http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f3642646754r.jpg",
      "http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f1972108674r.jpg",
      "http://lh.rdcpix.com/9371a801a0d6124ddd49df7b0427cd4bl-f4114311695r.jpg"
    ],
    "identifier": {
      "@type": "PropertyValue",
      "propertyID": "MLS",
      "value": "73571620"
    },
    "accommodationCategory": "Other",
    "numberOfBedrooms": 3,
    "numberOfBathroomsTotal": 2,
    "numberOfFullBathrooms": 2,
    "floorSize": {
      "@type": "QuantitativeValue",
      "value": 1795,
      "unitCode": "FTK",
      "unitText": "square feet"
    },
    "yearBuilt": 1930,
    "additionalProperty": [
      {
        "@type": "PropertyValue",
        "name": "Lot Size",
        "value": "0.10 acres"
      },
      {
        "@type": "PropertyValue",
        "name": "Stories",
        "value": 2
      },
      {
        "@type": "PropertyValue",
        "name": "Parking Spaces",
        "value": 4
      },
      {
        "@type": "PropertyValue",
        "name": "Property Subtype",
        "value": "Other"
      }
    ]
  },
  "offers": {
    "@type": "Offer",
    "@id": "https://www.propertysimple.ai/listing/171-lake-st-waltham-ma-02451-73571620#offer",
    "url": "https://www.propertysimple.ai/listing/171-lake-st-waltham-ma-02451-73571620",
    "price": 763888,
    "priceCurrency": "USD",
    "businessFunction": "http://purl.org/goodrelations/v1#Sell",
    "availability": "https://schema.org/InStock",
    "seller": {
      "@id": "https://www.propertysimple.ai/listing/171-lake-st-waltham-ma-02451-73571620#agent"
    }
  },
  "provider": {
    "@type": "Person",
    "@id": "https://www.propertysimple.ai/listing/171-lake-st-waltham-ma-02451-73571620#agent",
    "name": "Keller Williams",
    "telephone": "(617) 969-9000",
    "worksFor": {
      "@type": "Organization",
      "@id": "https://www.propertysimple.ai/listing/171-lake-st-waltham-ma-02451-73571620#brokerage",
      "name": "Keller Williams Chestnut Hill",
      "telephone": "(617) 969-9000"
    }
  }
}
```