How much do condos cost at 10 Williams St?

In the past 12 months, 7 condos sold at 10 Williams St (10 Williams St, Watertown) for a typical $420,000, or $432 per square foot. Sales ranged from $362,000 to $461,800.

How fast do condos sell at 10 Williams St?

Units that sold in the past 12 months took a typical 37 days to get an accepted offer, and 29% sold for their first asking price or more. In East Watertown overall, it took 25 days.

What are the condo fees at 10 Williams St?

The typical monthly condo fee at 10 Williams St is $629, about $0.66 per square foot a month, based on the fees filed with its listings.

What does it cost to rent at 10 Williams St?

3 units rented in the past 12 months, for a typical $2,600 a month. 1 bedroom: $2,450.

When was 10 Williams St built, and how many units does it have?

10 Williams St was built in 1973 and has 139 units, with homes up to the 7th floor, according to its listings.

Building report · East Watertown, Watertown

10 Williams St

Watertown, MA 02472

7 condos sold at 10 Williams St in the past 12 months, for a typical $420K, or $432 a square foot. That's 22% less per square foot than the typical condo in East Watertown.

1973 built
139 units
7 floors with homes
#87 in Greater Boston by condo sales

Unit 20, under agreement. Listed by Frank Celeste, Gibson Sotheby's International Realty. MLS #73542984.

$420K: typical sale price, past 12 months
$432: per square foot
37 days: typical time to an accepted offer
29%: sold for asking or more
0: for sale now
$629: typical monthly condo fee

10 Williams St sells for 22% less per square foot than East Watertown

Condo sales in the past 12 months: this building against all 25 condo sales in East Watertown.

East Watertown 10 Williams St

Price per sq ft ($)551432 −22%
Days to an accepted offer2537 +48%

Source: Verified market data; analysis by the Observer Markets Desk.

Show the numbers

	10 Williams St	East Watertown
Typical price per sq ft	$432	$551
Typical days to an accepted offer	37	25
Sold for asking or more	29%	48%

Under agreement1 unit

$369,000Cut $41K
Unit 20, floor 2
2 bed · 1 bath · 950 sq ft
$388/sq ft · 133 days listed · $629/mo fee
Under agreement · Condo · MLS #73542984
10 Williams Street #20, Watertown, MA
Listed by Frank Celeste, Gibson Sotheby's International Realty

What soldPast 12 months, newest first

Closed	Unit	Size	Price	$/sq ft	vs. first ask
Aug 24	Unit 45MLS #73470106 · Keller Williams Realty	2 bed, 950 sq ft	$410,000	$432	−2.1%
Aug 12	Unit 55MLS #73518589 · Gibson Sotheby's International Realty	2 bed, 950 sq ft	$420,000	$442	−6.7%
Jul 22	Unit 34MLS #73529234 · CK Realty Group LLC	2 bed, 950 sq ft	$430,000	$453	−6.3%
Jul 17	Unit #37MLS #73531508 · Move2Boston Group, LLC	1 bed, 670 sq ft	$362,000	$540	+0.6%
Apr 8	Unit 26MLS #73472952 · Coldwell Banker Realty - Newton	2 bed, 1,080 sq ft	$459,000	$425	+0.0%
Jan 29	Unit 39MLS #73381927 · Coldwell Banker Realty - Belmont	2 bed, 950 sq ft	$409,000	$431	−8.9%
Dec 31	Unit 56MLS #73412463 · Coldwell Banker Realty - Newton	2 bed, 1,080 sq ft	$461,800	$428	−5.7%

Where it isWith nearby buildings we track

Questions people ask

How much do condos cost at 10 Williams St?: In the past 12 months, 7 condos sold at 10 Williams St (10 Williams St, Watertown) for a typical $420,000, or $432 per square foot. Sales ranged from $362,000 to $461,800.
How fast do condos sell at 10 Williams St?: Units that sold in the past 12 months took a typical 37 days to get an accepted offer, and 29% sold for their first asking price or more. In East Watertown overall, it took 25 days.
What are the condo fees at 10 Williams St?: The typical monthly condo fee at 10 Williams St is $629, about $0.66 per square foot a month, based on the fees filed with its listings.
How many condos are for sale at 10 Williams St right now?: None right now.
What does it cost to rent at 10 Williams St?: 3 units rented in the past 12 months, for a typical $2,600 a month. 1 bedroom: $2,450.
When was 10 Williams St built, and how many units does it have?: 10 Williams St was built in 1973 and has 139 units, with homes up to the 7th floor, according to its listings.

About these numbers

Every figure on this page comes from verified market data for 10 Williams St, Watertown, refreshed November 8, 2026, and updates every morning. “Typical” means the median. Price per square foot uses the living area filed with each listing. Condo fees are monthly. Sales history in our data starts in late 2025.

Cite as: “10 Williams St building report,” Boston Real Estate Observer, https://bostonrealestateobserver.com/buildings/watertown/10-williams-st/ (data as of November 8, 2026).

The property listing data and information, or the Images, set forth herein were provided to MLS Property Information Network, Inc. from third party sources, including sellers, lessors, landlords and public records, and were compiled by MLS Property Information Network, Inc. The property listing data and information, and the Images, are for the personal, non commercial use of consumers having a good faith interest in purchasing, leasing or renting listed properties of the type displayed to them and may not be used for any purpose other than to identify prospective properties which such consumers may have a good faith interest in purchasing, leasing or renting. MLS Property Information Network, Inc. and its subscribers disclaim any and all representations and warranties as to the accuracy of the property listing data and information, or as to the accuracy of any of the Images, set forth herein.

Figures refresh every morning. This page was last updated November 8, 2026.