Observer
Building report · South End, Boston

Atelier 505

505 Tremont St, Boston, MA 02116

A South End condo building on Tremont Street.

1 condo sold at Atelier 505 in the past 12 months, for a typical $3.15M, or $1,854 a square foot. That's 60% more per square foot than the typical condo in the South End. Right now, 1 is for sale.

  • 2003 built
  • 100 units
  • 8 floors with homes
Atelier 505, Unit 613: listing photo
Unit 613, for sale at $1,399,000. Listed by Brett DeRocker, First Boston Realty International. MLS #73574090.
$3.15M
typical sale price, past 12 months
$1,854
per square foot
10 days
typical time to an accepted offer
100%
sold for asking or more
1
for sale now
$2,316
typical monthly condo fee

For sale now1 unit, 1.0% of the building

  • Unit 613: listing photo

    $1,399,000

    Unit 613, floor 1

    1 bed · 1.5 bath · 941 sq ft

    $1,487/sq ft · 61 days listed · $1,358/mo fee

    Active · Condo · MLS #73574090
    505 Tremont St #613, Boston, MA
    Listed by Brett DeRocker, First Boston Realty International

What soldPast 12 months, newest first

ClosedUnitSizePrice$/sq ftvs. first ask
Sep 15Unit 811MLS #73555651 · Gibson Sotheby's International Realty2 bed, 1,699 sq ft$3,150,000$1,854+0.0%

Where it isWith nearby buildings we track

Questions people ask

How much do condos cost at Atelier 505?
In the past 12 months, 1 condos sold at Atelier 505 (505 Tremont St, Boston) for a typical $3,150,000, or $1,854 per square foot. Sales ranged from $3,150,000 to $3,150,000.
How fast do condos sell at Atelier 505?
Units that sold in the past 12 months took a typical 10 days to get an accepted offer, and 100% sold for their first asking price or more. In the South End overall, it took 17 days.
What are the condo fees at Atelier 505?
The typical monthly condo fee at Atelier 505 is $2,316, about $1.69 per square foot a month, based on the fees filed with its listings.
How many condos are for sale at Atelier 505 right now?
1 unit is for sale, asking from $1,399,000 to $1,399,000.
When was Atelier 505 built, and how many units does it have?
Atelier 505 was built in 2003 and has 100 units, with homes up to the 8th floor, according to its listings.

From our archivePublished years ago; prices have changed since

Atelier 505, archive photoAtelier 505, archive photo

About these numbers

Every figure on this page comes from verified market data for 505 Tremont St, 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: “Atelier 505 building report,” Boston Real Estate Observer, https://bostonrealestateobserver.com/buildings/boston/505-tremont-st/ (data as of November 8, 2026).