Skip to content

Local provider profile

Blackwell Construction LLC

Documented work across Connecticut based on attributed municipal records.

Jobs on record85Recorded in our system
Reported work volume$55.9MDocumented jobs
Average project$658KWhere values are reported
First observed2020Available dataset
Categories5Observed work types
Used for work inStamford85 jobs

Work history

Documented work by property

Individual records are grouped by address. Totals include only values reported in public records and may not equal final construction cost.

Aerial image of 400 Atlantic St, Stamford, CT

400 Atlantic St

Stamford, CT52 jobs on record
2026Building Permit

AMG Funding – corporate interior buildout for business occupancy.

$1.6M
View all 52 jobs
  • 2026Building Permit

    AMG Funding – corporate interior buildout for business occupancy.

    $1.6M
  • 2026Demolition

    Demo of the 14,15,16th floors, installation of 2 new air handlers on the 14th and 15th floors, new corridor and bathrooms on the 15th floor.

    $1M
  • 2026Building Permit

    Demising office space on the 10th floor with new interior configuration, MoneyCorp as tenant.

    $234K
  • 2026Building Permit

    Corporate Interior build out for business occupancy on the 6th Floor, ISG as tenant.

    $400K
  • 2026Building Permit

    Infill the staircase opening in the floor slab on the 14th and 15th floors. Work area: 240 SF.

    $80K
  • 2026Renovation

    400 Atlantic Street, second-floor common-area corridor renovation. Demise the north side into 2 future tenant spaces. Construct a 2-hour-rated exit access corridor for access by future tenant. Work area: 11,290 SF.

    $480K
  • 2026Building Permit

    Office tenant improvement for Cushman and Wakefield on the second floor. Work area 7,078 SF.

    $850K
  • 2025Building Permit

    Tenant improvement on the third floor of 400 Atlantic Street for Otter Rock. Use group B business. Work area: 1,608 SF. Building construction type: 1-B.

    $450K
  • 2025Renovation

    Commercial interior, Level 2 alteration to an existing office, 2,023 SF on the fourth floor.

    $250K
  • 2025Renovation

    Level 2 alteration for an office improvement for Kovitz, 6th floor. Work area: 8,278 SF. Use Group B offices.

    $1M
  • 2025Renovation

    Interior renovation, Level 2 tenant improvement on the 6th floor. Use Group B, Business. Work area: 11,405 SF. No change of use or occupancy.

    $2.5M
  • 2025Renovation

    Interior renovation for Steward Partners, a new tenant on the 10th floor. Work area: 5,163 SF. Use Group B offices. No change in occupancy, use, or egress.

    $937K
  • 2025Renovation

    Extend the existing common corridor around the building core to provide proper egress for the demised future tenants. Renovate the south toilet room on the 7th floor.

    $200K
  • 2025Renovation

    Commercial office interior fit-out of an already empty space. The new space will be one large open area. Approximately 8,546 of construction. Tenant: Waste Harmonics and Keter, 5th floor.

    $1.1M
  • 2025Mechanical

    New corridor demising and restroom upgrades on the 12th floor, and installation of new air handler units in the mechanical room. No change in occupancy or use.

    $1.3M
  • 2025Building Permit

    Interior tenant improvement on the 12th floor to accommodate State Street Bank. Work area: 20,198 SF.

    $3.8M
  • 2025Building Permit

    Interior tenant improvement on the 10th floor for Money Corp. Use Group B Business. Work area 6,341 SF.

    $1M
  • 2024Building Permit

    Permit B-24-1168. Fourth-floor tenant improvement for Shipman and Goodwin. Use Group B. Work area 11,226 SF.

    $2M
  • 2024Building Permit

    9th Floor Beam/Slab Reinforcement to increase floor live load capacity.

    $120K
  • 2024Building Permit

    To build out full corridor/elevator lobby and to include one set of bathrooms.

    $1.2M
  • 2024Building Permit

    Office tenant improvement on the third floor; 3,257 SF work area.

    $1M
  • 2024Demolition

    Partial 11th-floor demolition and renovation of select common areas at 400 Atlantic. No change in occupancy or use.

    $600K
  • 2024Addition

    Addition of a storage closet for an existing tenant space. No change to use, occupancy, or egress. Application withdrawn per client request. DN.

    $28K
  • 2024Mechanical

    Install 2 new air handler units on 8th Floor mechanical room.

    $300K
  • 2024Building Permit

    Reduce to the core southern portion of the 11th-floor, 18,638 SF work area.

    $100K
  • 2024Building Permit

    Tenant improvement to the south portion of the 11th floor, 12,800 SF.

    $2.9M
  • 2023Building Permit

    7th Floor – Reduce to core and shell.

    $85K
  • 2023Building Permit

    8th floor – reduce to core and shell.

    $85K
  • 2023Building Permit

    Infill a floor opening in the east area of the 7th floor.

    $30K
  • 2023Building Permit

    Infill of staircase on the 8th floor, east area.

    $30K
  • 2023Mechanical

    Reduce to Core and Shell on the 6th Floor. Renovate men's and Women's toilet rooms. Upgrade core mechanical equipment. Construct new common corridor around core. Per Approved amendment June 16,2025.

    $50K
  • 2023Building Permit

    Infill of the floor slab in the fifth-floor east area.

    $30K
  • 2023Building Permit

    Infill the floor slab opening in the west area of the 6th floor.

    $30K
  • 2023Building Permit

    Infill the floor opening in the west area of the 10th floor.

    $30K
  • 2023Building Permit

    Infill the floor slab in the east area of the 11th floor.

    $30K
  • 2023Building Permit

    9 th Floor Reduce to core including toilet rooms. Toilet room improvements by separate application.

    $45K
  • 2023Renovation

    Fourth-floor demise of the common corridor and restroom renovation.

    $30K
  • 2023Renovation

    Reduce 10 th floor to core 29,700 Sf area. Renovate Core Toilet rooms 1,170 Sf.

    $50K
  • 2023Building Permit

    Construction of a lobby-level bar/café, 500 SF.

    $100K
  • 2023Building Permit

    Commercial office tenant improvement, 17,536 SF, 5th floor, Cara Therapeutics.

    $2.1M
  • 2023Renovation

    Reduce to core and shell on the 5th floor. Renovate core toilet rooms.

    $50K
  • 2023Building Permit

    Development of new interior office space for AXA IM’s regional offices on the 10th floor. 12,072 SF.

    $4.3M
  • 2023Renovation

    Tenant fit-out of Harman International, fourth floor, 8,652 SF.

    $650K
  • 2023Building Permit

    Reduce to core and shell to the fourth floor. Construct new corridor partitions around the existing core.

    $50K
  • 2022Renovation

    Renovate the ground-floor lobby. Install one open stairway. Associated work on the second and third floors.

    $500K
  • 2022Addition

    Expand the existing ground-floor, 2-story lobby to the south by approximately 2,204± SF. Replace the existing framed curtain wall at the new lobby with a structural glass and aluminum fin curtain wall, and add decorative mullion caps over the existing curtain wall mullions at the Tresser Blvd. Portion of the building. The work also includes new and relocated glass entrances to the lobby using revolving doors, and a new glass vestibule for entry from the existing garage.

    $450K
  • 2022Building Permit

    New steel framing and concrete on metal deck slabs for structural infills of existing stair openings in the fourth floor and 12th floor framing.

    $15K
  • 2022Building Permit

    Temporary lobby and second-floor egress.

    $10K
  • 2022Demolition

    Interior demolition on the second floor.

    $80K
  • 2022Demolition

    Interior demolition on the third floor.

    $80K
  • 2022Demolition

    Interior demolition on the 12th floor.

    $80K
  • 2022Demolition

    Interior demolition on the ground level.

    $80K
Aerial image of 151 Greenwich Ave, Stamford, CT

151 Greenwich Ave

Stamford, CT5 jobs on record
2026Renovation

Commercial office renovation involving approximately 26,214 SF of construction work, to be done in 2 phases, at 200 First Stamford Place, fourth floor. Tenant: PartnerRe.

$2M
View all 5 jobs
  • 2026Renovation

    Commercial office renovation involving approximately 26,214 SF of construction work, to be done in 2 phases, at 200 First Stamford Place, fourth floor. Tenant: PartnerRe.

    $2M
  • 2026Renovation

    Commercial Alteration Level II: 426 SF tenant improvement for the IT room only at 300 First Stamford Place, Suite 401 (Squarepoint Capital).

    $191K
  • 2025Renovation

    Commercial/tenant office fit-out, third floor, Suite 300,8,034 SF. B-25-799.

    $975K
  • 2025Renovation

    Building 100, third floor, Ste 300 Tenant: CenveoPartial renovation of existing office space. Appx 800 s.f.

    $17.5K
  • 2025Building Permit

    Commercial office interior, approximately 1900 SF: construct a new demising wall consolidating tenant space.

    $70.4K
Aerial image of 208 Harbor Dr, Stamford, CT

208 Harbor Dr

Stamford, CT3 jobs on record
2026Renovation

Interior commercial office renovation on the first floor for Yes Network in Building #250. Work area: 2,378 SF.

$480K
View all 3 jobs
  • 2026Renovation

    Interior commercial office renovation on the first floor for Yes Network in Building #250. Work area: 2,378 SF.

    $480K
  • 2025Renovation

    Commercial office renovation of approximately 4014 SF.

    $610K
  • 2024Renovation

    250 Harbor Drive, 1st FlYES NetworkPartial office renovation of approximately 4,715 s.f.

    $318K
Aerial image of 677 Washington Blvd, Stamford, CT

677 Washington Blvd

Stamford, CT22 jobs on record
2026Renovation

Interior Renovation to accommodate a hockey focused athletic training facility on the first floor.

$415K
View all 22 jobs
  • 2026Renovation

    Interior Renovation to accommodate a hockey focused athletic training facility on the first floor.

    $415K
  • 2025Building Permit

    13th-floor tenant improvement for Philip Morris. Construct a new mezzanine of 825 SF. Add “Town Hall”/lecture hall assembly space, Use Group A-3, to existing Use Group B offices. Total work area: 7,936 SF. Maximum occupancy of the 13th floor is limited to 345 persons. Occupancy to be posted.

    $4M
  • 2025Renovation

    Interior tenant alteration on the fifth floor of an existing Use Group B office tenant. Work area: 1,837 SF. No change in use, occupancy, or egress.

    $69K
  • 2024Building Permit

    Interior office tenant improvement on the 13th floor. Group B business use. Work area 9,732 SF.

    $1.9M
  • 2024Building Permit

    Convert double offices to private offices and reconfigure existing furniture. Approximately 2400 SF.

    $144K
  • 2023Renovation

    10th floor tenant fit-out with a combination of offices, workstations, and conferencing.

    $518K
  • 2022Building Permit

    Reduce to core–cellar, first and second floors at 677 Washington Blvd., Unit B1, also known as 29 Federal Street.

    $150K
  • 2022Renovation

    Commercial office space fit-out on the 10th floor.

    $850K
  • 2022Renovation

    Interior renovation on the 9th Floor to accommodate Stifel as a new tenant.

    $750K
  • 2022Building Permit

    Interior office build-out on the 8th floor. 11/3/2022: OK to issue PCO. Full COA upon installation of permanent lighting and installation of a second means of egress from the patio. Patio will be secure from occupying until full COA. MTC.

    $675K
  • 2022Building Permit

    Office build out on the 10th Floor, AXA XL.

    $2M
  • 2022Renovation

    Renovation of restrooms, corridor, and elevator lobby on the 10th floor.

    $450K
  • 2022Demolition

    Core and Shell Demo on the 10th floor.

    $175K
  • 2021Demolition

    Interior demolition of the 11th and 12th floors per plans filed.

    $337K
  • 2021Renovation

    Tenant fit-out on the 8th floor per plans file.

    $450K
  • 2021Building Permit

    Remove the communication staircase connecting floors 12 and 13, and infill the staircase opening on the 13th floor.

    $150K
  • 2021Building Permit

    Remove three offices to create an employee lounge, add a meeting room to the reception area, and add cabinets in the pantry on the 5th floor.

    $50K
  • 2021Building Permit

    8th-floor tenant build-out. Revised to include removing an existing wall partition to add an office and conference space for the tenant. DN 9.22.21. Amendment 2: Add 2,188 SF of additional tenant space to the scope of work. Amended plans uploaded 4/4/22. DN 4.5.22.

    $750K
  • 2021Renovation

    Renovation of 8th-floor restrooms and corridor upgrade.

    $50K
  • 2021Demolition

    Demolition of UPS equipment and space on the first floor.

    $90K
  • 2020Building Permit

    Prebuild suite on the fifth floor. No change in occupancy. Amended drawings for the reconfiguration of 4 offices uploaded. DN 4.26.21.

    $400K
  • 2020Renovation

    Interior alteration on the 5th floor to accommodate MKM Partners as tenant. Trade permits required.

    $450K
Aerial image of 1266 E Main St, Stamford, CT

1266 E Main St

Stamford, CT
2023Renovation

Renovation of the main entrance lobby, garage entrance vestibule, and walkways on the first, second, and third floors overlooking the lobby.

$330K
Aerial image of 275 Bld 1 Turn Of River Rd, Stamford, CT

275 Bld 1 Turn Of River Rd

Stamford, CT2 jobs on record
2022Building Permit

Corporate interior build-out for business occupancy on the second floor of Building #5.

$1.4M
View all 2 jobs
  • 2022Building Permit

    Corporate interior build-out for business occupancy on the second floor of Building #5.

    $1.4M
  • 2022Building Permit

    Interior improvement and installation of a staircase on the second/third floor.

    $250K