How much do condos cost at Echelon Seaport (133 Seaport)?

In the past 12 months, 15 condos sold at Echelon Seaport (133 Seaport) (133 Seaport Blvd, Boston) for a typical $1,385,000, or $1,589 per square foot. Sales ranged from $815,000 to $2,130,000.

How fast do condos sell at Echelon Seaport (133 Seaport)?

Units that sold in the past 12 months took a typical 56 days to get an accepted offer, and 13% sold for their first asking price or more. In the Seaport District overall, it took 38 days.

What are the condo fees at Echelon Seaport (133 Seaport)?

The typical monthly condo fee at Echelon Seaport (133 Seaport) is $1,649, about $1.81 per square foot a month, based on the fees filed with its listings.

How many condos are for sale at Echelon Seaport (133 Seaport) right now?

9 units are for sale, asking from $799,000 to $4,695,000.

What does it cost to rent at Echelon Seaport (133 Seaport)?

20 units rented in the past 12 months, for a typical $5,975 a month. 1 bedroom: $5,338; 2 bedrooms: $9,000; 3+ bedrooms: $21,000.

When was Echelon Seaport (133 Seaport) built, and how many units does it have?

Echelon Seaport (133 Seaport) was built in 2018 and has 255 units, with homes up to the 25th floor, according to its listings.

Building report · Seaport District, Boston

Echelon Seaport (133 Seaport)

133 Seaport Blvd, Boston, MA 02210

15 condos sold at Echelon Seaport (133 Seaport) in the past 12 months, for a typical $1.39M, or $1,589 a square foot. That's 6% less per square foot than the typical condo in the Seaport District. Right now, 9 are for sale and 4 are for rent.

2018 built
255 units
25 floors with homes
#13 in Greater Boston by condo sales

Unit 12, for sale at $4,695,000. Listed by Laura Rodriguez, The Collaborative Companies. MLS #73567330.

$1.39M: typical sale price, past 12 months
$1,589: per square foot
56 days: typical time to an accepted offer
13%: sold for asking or more
9: for sale now
$1,649: typical monthly condo fee

Echelon Seaport (133 Seaport) sells for 6% less per square foot than the Seaport District

Condo sales in the past 12 months: this building against all 72 condo sales in Seaport District.

Seaport District Echelon Seaport (133 Seaport)

Price per sq ft ($)1,6971,589 −6%
Days to an accepted offer3856 +47%

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

Show the numbers

	Echelon Seaport (133 Seaport)	Seaport District
Typical price per sq ft	$1,589	$1,697
Typical days to an accepted offer	56	38
Sold for asking or more	13%	38%

For sale now9 units, 3.5% of the building

$4,695,000
Unit 12, floor 21
3 bed · 3.5 bath · 1,957 sq ft
$2,399/sq ft · 77 days listed · $4,675/mo fee
Active · Condo · MLS #73567330
133 Seaport Blvd #12, Boston, MA
Listed by Laura Rodriguez, The Collaborative Companies
$2,775,000Cut $100K
Unit 1122, floor 11
2 bed · 2.5 bath · 1,285 sq ft
$2,160/sq ft · 53 days listed · $2,719/mo fee
Active · Condo · MLS #73578764
133 Seaport Blvd #1122, Boston, MA
Listed by Stone Prum, Corcoran Property Advisors
Virtual tour
$2,395,000
Unit 2101, floor 21
2 bed · 2.5 bath · 1,448 sq ft
$1,654/sq ft · 251 days listed · $3,006/mo fee
Active · Condo · MLS #73481741
133 Seaport Boulevard #2101, Boston, MA
Listed by Rob Ramsdell, Gibson Sotheby's International Realty
$1,849,900
Unit 1602, floor 16
2 bed · 2 bath · 1,064 sq ft
$1,739/sq ft · 6 days listed · $1,882/mo fee
Active · Condo · MLS #73598036
133 Seaport Boulevard #1602, Boston, MA
Listed by Nikki Martin Team, Compass
$1,795,000Cut $105K
Unit 902, floor 9
2 bed · 2 bath · 1,064 sq ft
$1,687/sq ft · 154 days listed · $1,874/mo fee
Active · Condo · MLS #73531999
133 Seaport Blvd #902, Boston, MA
Listed by Jeffrey N. Shuman, Luxury Residential Group, LLC
$1,449,999
Unit 520, floor 5
1 bed · 1 bath · 693 sq ft
$2,092/sq ft · 196 days listed · $1,517/mo fee
Active · Condo · MLS #73508029
133 Seaport Blvd #520, Boston, MA
Listed by Kerry D'Ambroise, Columbus and Over Group, LLC

Show all 9 for sale

$1,275,000
Unit 1215, floor 12
1 bed · 1 bath · 800 sq ft
$1,594/sq ft · 42 days listed · $1,240/mo fee
Active · Condo · MLS #73583441
133 Seaport Boulevard #1215, Boston, MA
Listed by Laura Hughes, Campion & Company Fine Homes Real Estate
$1,080,000Cut $20K
Unit 807, floor 8
1 bed · 1 bath · 683 sq ft
$1,581/sq ft · 55 days listed · $1,041/mo fee
Active · Condo · MLS #73577644
133 Seaport Blvd #807, Boston, MA
Listed by Zoe Shih, Blue Ocean Realty, LLC
$799,000Cut $26K
Unit 502, floor 5
Studio · 1 bath · 444 sq ft
$1,800/sq ft · 272 days listed · $669/mo fee
Active · Condo · MLS #73475838
133 Seaport Boulevard #502, Boston, MA
Listed by Shannon Lavin, Compass

Under agreement1 unit

$2,450,000Cut $150K
Unit 1208, floor 12
2 bed · 2.5 bath · 1,496 sq ft
$1,638/sq ft · 178 days listed · $2,934/mo fee
Contingent · Condo · MLS #73519673
133 Seaport Blvd #1208, Boston, MA
Listed by Tom Dang, RE/MAX Innovative Properties
Virtual tour

For rent now4 units

$29,250/mo
Unit PH1C, floor 23
3 bed · 2.5 bath · 2,192 sq ft
118 days listed
For rent · Condo rental · MLS #73549166
133 Seaport Blvd #PH1C, Boston, MA
Listed by Laura Rodriguez, The Collaborative Companies
$9,800/mo
Unit 1916, floor 19
2 bed · 2.5 bath · 1,350 sq ft
1 days listed
For rent · Condo rental · MLS #73600064
133 Seaport Blvd #1916, Boston, MA
Listed by Winston Li, Blue Ocean Realty, LLC
$6,350/mo
Unit 1016, floor 10
1 bed · 1 bath · 836 sq ft
15 days listed
For rent · Condo rental · MLS #73594858
133 Seaport Blvd #1016, Boston, MA
Listed by Gregory Agganis, Gregory Agganis
$5,600/mo
Unit 1912, floor 19
1 bed · 1 bath · 691 sq ft
40 days listed
For rent · Condo rental · MLS #73584463
133 Seaport Blvd #1912, Boston, MA
Listed by Michelle Otey, Luxury Residential Group, LLC

Price per square foot at Echelon Seaport (133 Seaport), quarter by quarter

Typical sale price per square foot, every sale in our data since 2025 Q4.

$ per sq ft 1,600 (2026 Q3)

Seaport District typical, past 12 months: $1,697. Source: Verified market data; analysis by the Observer Markets Desk.

Show the numbers

Quarter	Typical $/sq ft	Sales
2025 Q4	$1,669	4
2026 Q1	$1,630	2
2026 Q2	$1,550	3
2026 Q3	$1,600	8

Here, the view doesn't add much to the price

Typical sale price per square foot by floor, past 12 months.

Floors 1–9$1,5715 sales
Floors 10–17$1,6098 sales
Floors 18–25$1,5532 sales

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

Show the numbers

Floors	Typical $/sq ft	Sales
Floors 1–9	$1,571	5
Floors 10–17	$1,609	8
Floors 18–25	$1,553	2

Buy or rent here?

Typical sale price and monthly rent by size, past 12 months. “Rent as % of price” is a year's rent divided by the price: the higher it is, the more renting here costs compared with buying.

Size	Sale price	Monthly rent	Rent as % of price
Studio	–	$3,900 (1)	–
1 bedroom	$1.2M (9)	$5,338 (10)	5.3%
2 bedrooms	$1.89M (6)	$9,000 (7)	5.7%
3+ bedrooms	–	$21,000 (2)	–

What soldPast 12 months, newest first

Closed	Unit	Size	Price	$/sq ft	vs. first ask
Oct 21	Unit 1519MLS #73474586 · Blue Ocean Realty, LLC	1 bed, 646 sq ft	$1,150,000	$1,780	−5.3%
Sep 30	Unit 722MLS #73538458 · Tucker Real Estate Advisors, Inc.	2 bed, 1,285 sq ft	$2,000,000	$1,556	−14.9%
Aug 28	Unit 1509MLS #73567615 · Compass	2 bed, 1,201 sq ft	$1,880,000	$1,565	−2.1%
Aug 28	Unit 1719MLS #73515529 · Compass	1 bed, 646 sq ft	$1,080,000	$1,672	−6.0%
Aug 25	Unit 716MLS #73505345 · Compass	1 bed, 836 sq ft	$1,395,000	$1,669	+0.0%
Aug 24	Unit 723MLS #73537154 · Compass	2 bed, 1,244 sq ft	$1,900,000	$1,527	−8.0%
Aug 6	Unit 1510MLS #73556143 · Blue Ocean Realty, LLC	1 bed, 779 sq ft	$1,270,000	$1,630	−12.4%
Jul 28	Unit 1-2003MLS #73505892 · The Collaborative Companies	1 bed, 795 sq ft	$1,295,000	$1,629	−5.8%
Jul 10	Unit 803MLS #73488231 · Regatta Realty	2 bed, 1,062 sq ft	$1,668,800	$1,571	−1.5%
May 22	Unit 1112MLS #73481260 · Blue Ocean Realty, LLC	1 bed, 700 sq ft	$1,085,000	$1,550	−7.7%

Show all 15 sales

Closed	Unit	Size	Price	$/sq ft	vs. first ask
May 18	Unit 1017MLS #73480713 · Compass	2 bed, 1,057 sq ft	$1,530,000	$1,447	−7.8%
Apr 30	Unit 920MLS #73456795 · Douglas Elliman Real Estate - Easter Entwistle Advisors	2 bed, 1,255 sq ft	$2,130,000	$1,697	−7.4%
Mar 17	Unit 2107MLS #73487116 · The Collaborative Companies	1 bed, 812 sq ft	$1,199,000	$1,477	+0.0%
Jan 5	Unit 1710MLS #73458711 · NEST Seekers MA LLC	1 bed, 777 sq ft	$1,385,000	$1,782	−6.1%
Dec 8	Unit 1621MLS #73431270 · Cutter Luxe Living LLC	1 bed, 513 sq ft	$815,000	$1,589	−4.0%

Where it isWith nearby buildings we track

Questions people ask

How much do condos cost at Echelon Seaport (133 Seaport)?: In the past 12 months, 15 condos sold at Echelon Seaport (133 Seaport) (133 Seaport Blvd, Boston) for a typical $1,385,000, or $1,589 per square foot. Sales ranged from $815,000 to $2,130,000.
How fast do condos sell at Echelon Seaport (133 Seaport)?: Units that sold in the past 12 months took a typical 56 days to get an accepted offer, and 13% sold for their first asking price or more. In the Seaport District overall, it took 38 days.
What are the condo fees at Echelon Seaport (133 Seaport)?: The typical monthly condo fee at Echelon Seaport (133 Seaport) is $1,649, about $1.81 per square foot a month, based on the fees filed with its listings.
How many condos are for sale at Echelon Seaport (133 Seaport) right now?: 9 units are for sale, asking from $799,000 to $4,695,000.
What does it cost to rent at Echelon Seaport (133 Seaport)?: 20 units rented in the past 12 months, for a typical $5,975 a month. 1 bedroom: $5,338; 2 bedrooms: $9,000; 3+ bedrooms: $21,000.
When was Echelon Seaport (133 Seaport) built, and how many units does it have?: Echelon Seaport (133 Seaport) was built in 2018 and has 255 units, with homes up to the 25th floor, according to its listings.

About these numbers

Every figure on this page comes from verified market data for 133 Seaport Blvd, Boston, 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: “Echelon Seaport (133 Seaport) building report,” Boston Real Estate Observer, https://bostonrealestateobserver.com/buildings/boston/133-seaport-blvd/ (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.

Echelon Seaport (133 Seaport) sells for 6% less per square foot than the Seaport District

For sale now9 units, 3.5% of the building

Under agreement1 unit

For rent now4 units

Price per square foot at Echelon Seaport (133 Seaport), quarter by quarter

Here, the view doesn't add much to the price

Buy or rent here?

What soldPast 12 months, newest first

Where it isWith nearby buildings we track

Questions people ask

About these numbers

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