The Flatiron @ Union Square offers a contemporary lifestyle in an energetic, urban environment. This architect-designed, new construction building is a 16-unit development which includes 14 residential units & 2 ground floor commercial spaces. These sun-splashed condos have open plan layouts, over nine foot ceilings, oversized windows & amazing views! These boutique residences feature custom cabinetry, professional grade appliances, signature granite & stainless kitchens, and gorgeous maple hardwood floors throughout. Amenities in this contemporary renovation include in-unit laundry, central air, parking availability, a passenger elevator, private balcony, and a common roof deck & patio. Conveniently located in Union Sq. with a Walk Score of 95. Just minutes to the future Union Sq green line stop. Ready for Occupancy in October 2017. This condo was purchased with outdoor space #13.
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| Year | Land | Building | Total | Change |
|---|---|---|---|---|
| FY2025 | $0 | $860,300 | $860,300 | — |
| Date | Price | Book/Page |
|---|---|---|
| Sep 22, 2021 | $1 | 78755/0530 |
| Jan 26, 2021 | $10 | 76781/0321 |
| May 5, 2020 | $835,000 | 74606/0136 |
| Sep 14, 2018 | $900,000 | 71619/0188 |
| Aug 9, 2018 | $180,137 | 71451/0235 |
| Aug 1, 2018 | $268,824 | 71459/0046 |
| Feb 28, 2018 | $445,000 | 70683/0471 |
| Dec 1, 2017 | $125,000 | 70322/0309 |
| Nov 3, 2017 | $925,000 | 70189/0276 |
| Nov 2, 2017 | $925,000 | 70182/0210 |
| Issued | Type / Work | Status | Value |
|---|---|---|---|
| Dec 22, 2025 |
Building Permit
Commercial Other
Sign install
By Carol Fournier
#52678416
|
Open | $330 |
| Sep 10, 2025 |
Certificate of Occupancy
Commercial
Certificate of Occupancy for Bakery Tenant
OCCUPANT LOAD 14
#52260483
|
Open | $195 |
| Jun 10, 2025 |
Building Permit
Residential Repair
Insulate part of the kitchen ceiling , sheetrock with 5/8 fire code blue boards and plaster it, prime and paint ceiling and wall, install…
By Delson Filho
#51982396
|
Closed | $460 |
| Jun 4, 2025 |
Electrical Permit
Residential
Electrical repairs due to water leak , in accordance with Building permit.
By Spangler Gross
#52066122
|
Open | $45 |
| Sep 16, 2024 |
Building Permit
Commercial Other
Install ductless mini split heat pump for bakery retail space
By Jason Chui
#51110796
|
Open | $400 |
| May 5, 2024 |
Plumbing Permit
Commercial - Existing
Tenant Fitup (Bakery)
#14276619
|
Closed | $170 |
| May 2, 2024 |
Building Permit
Commercial Renovation
Take over project of permit #B19-000588 for Bakery Tenant Fit Out. Rough inspections already completed.
By Jason Chui
#14081317
|
Closed | $2,848 |
| Apr 28, 2024 |
Electrical Permit
Commercial
Tenant Fitup (Bakery)
B23-002188
By Jason Chui
#14276603
|
Closed | $689 |
| Apr 4, 2023 |
Electrical Permit
Commercial
wire the bakery store
Withdrawn at request of Owner
By Mark Lau
#10921717
|
Closed | $435 |
| Mar 16, 2023 |
Electrical Permit
Commercial
Wiring of mini splits in bakery.
By Costas Hatzis
#11502940
|
Closed | $105 |
| Dec 7, 2022 |
Electrical Permit
Commercial
Wiring of service for bakery.
By Costas Hatzis
#10975324
|
Closed | $210 |
| Dec 23, 2020 |
Gas Fitting
Commercial - Existing
Gas too water heater
#7893852
|
Open | $60 |
| Dec 23, 2020 |
Plumbing Permit
Commercial - Existing
Tenant fit out for a bakery
#7893850
|
Open | $190 |
| Dec 25, 2019 |
Building Permit
Commercial Renovation
tenant fit out for a bakery
CONTRACTOR REMOVED BY OWNER SEE ATTACHED LETTER - JS 12/8/23
By LUISHUN LAU
#5153561
|
Closed | $3,800 |
| Nov 11, 2019 |
Electrical Permit
Commercial
Bakery Tenant Fitup
By Jason Chui
#6621370
|
Voided | $550 |
| Nov 28, 2017 |
Electrical Permit
Commercial
wiring of half bath.
By Costas Hatzis
#3774093
|
Closed | $75 |
| Nov 13, 2017 |
Plumbing Permit
Commercial - New
half bath
#3748387
|
Closed | $230 |
| Nov 12, 2017 |
Building Permit
Residential Alteration
add half bath in commercial space
By Frank Barbosa
#3743492
|
Closed | $130 |
| Oct 10, 2017 |
Certificate of Occupancy
Residential
5 of 14 condominium units and 2 commercial spaces
ZBA 2012-21
Issued Units: 203, 204, 301, 303 & 304
corrected CO after it was issued
#3721527
|
Open | $2,220 |
| Jan 30, 2017 |
Electrical Permit
Residential
wiring of 16 units
By Costas Hatzis
#3388055
|
Closed | $536 |
| Dec 19, 2016 |
Gas Fitting
Residential - New
rental units
#3425036
|
Closed | $590 |
| Nov 9, 2016 |
Gas Fitting
Residential - New
3 heaters
#3362618
|
Closed | $200 |
| Oct 31, 2016 |
Plumbing Permit
Residential - New
14 rental units
#3218041
|
Closed | $1,840 |
| Dec 29, 2015 |
Gas Fitting
Residential - New
gas pipe and vent temporary heaters
#2539052
|
Closed | $190 |
| Dec 8, 2015 |
Electrical Permit
Residential
new building
See E16-001997
By Michael Shaughnessy
#2457956
|
Closed | $4,306 |
| Jan 14, 2015 |
Electrical Permit
Residential
wire foundation ground
By Joao Lopes
#2016299
|
Closed | $90 |
| Sep 8, 2014 |
Electrical Permit
Residential
wire and install temporary electrical service
By Joao Lopes
#1827944
|
Closed | $115 |
This property sold for 3.6% above the original asking price, indicating strong buyer demand.
The property spent 52 days on market before selling.
Based on 40 similar properties sold within 0.5 miles in the last 90 days
This property sold for significantly more per square foot than similar nearby properties, suggesting premium features or condition.
Union Square
70 Prospect Street # 304, Somerville MA 02143
Somerville, MA 02143
| Date | Event | Price | Change | $/sqft | Details |
|---|---|---|---|---|---|
| 10/27/2017 | ✓ Sold | $725,000 | - | - | Property sold |
| 08/12/2017 | 🏠 Listed for Sale | $700,000 | - | - | Original listing |
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