Updated: Jul 06, 2026
Location and Projects
Address
2 Barrett St, Massapequa, NY, 11758
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Sigma7 Design Group Architect
Sigma7 Design Group, 2 Barrett St, Massapequa, NY (Owned by: William E Serra) holds a Architecture Firm license and 4 other licenses according to the Pennsylvania license board.
Their BuildZoom score of 93 ranks in the top 27% of 77,888 New York licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Sigma7 Design Group, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
Sigma7 Design Group Services
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Sigma7 Design Group Contact Information
Phone Number: (212) 779-7100
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Address: 2 Barrett St, Massapequa, NY 11758
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This is a sample of this contractor's permits. Click here to access their complete permit history.
Alteration type 2 - gen. constr. reconfiguration of existing electrical equipment room demolition and installation of new partitions and doors. no change in use occupancy or egress
Valuation:
$315,000
Permit #:
140923865-01-EW-OT
Status:
issued
Fee:
$3,439
Permit Type:
N/A
Building Type:
N/A
Alteration type 2 - sprinkler modification to existing sprinkler systems. no change in use egress or occupancy
Valuation:
$385,800
Permit #:
123680542-01-EW-SP
Status:
issued
Fee:
$4,170
Permit Type:
N/A
Building Type:
N/A
Plumbing - alteration type 2 modifications to mechanical and plumbing systems at 4th floor tenant space as indicated on drawings. no change to use egress or occupancy
Valuation:
$140,000
Permit #:
123718325-02-PL
Status:
issued
Fee:
$1,636
Permit Type:
N/A
Building Type:
O6-office buildings
Alteration type 2 - fire suppressio removal of existing halon fire suppression system generator and fuel storage related to decommissioning of existing verizon office space as shown on drawings filed herewith. no change in use egress or occupancy
Valuation:
$400,000
Permit #:
123274116-01-EW-OT
Status:
issued
Fee:
$4,334
Permit Type:
N/A
Building Type:
R0-condominiums
Alteration type 2 - mech/hvac removal of existing halon fire suppression system generator and fuel storage related to decommissioning of existing verizon office space as shown on drawings filed herewith. no change in use egress or occupancy
Valuation:
$400,000
Permit #:
123274116-01-EW-MH
Status:
issued
Fee:
$4,334
Permit Type:
N/A
Building Type:
R0-condominiums
Alteration type 2 - mech/hvac installation of replacement chiller and mechanical appurtenances on the 18th floor roof servicing sbmc. no change to egress zoning use group building occupancy or bulk under this application
Valuation:
$500,000
Permit #:
123017519-01-EW-MH
Status:
issued
Fee:
$5,364
Permit Type:
N/A
Building Type:
R0-condominiums
Alteration type 2 - gen. constr. removal and installation of non bearing partitions and related finishes as per plans filed herewith. no change in use egress or occupancy under this application
Valuation:
$800,000
Permit #:
122671652-01-EW-OT
Status:
issued
Fee:
$8,454
Permit Type:
N/A
Building Type:
O4-office buildings
Alteration type 2 - mech/hvac modifications to existing hvac system and plumbing fixtures as per plans filed herewith. no change in use egress or occupancy under this application
Valuation:
$4,490,000
Permit #:
122671652-02-EW-MH
Status:
issued
Fee:
$46,461
Permit Type:
N/A
Building Type:
O4-office buildings
Plumbing - alteration type 2 modifications to existing hvac system and plumbing fixtures as per plans filed herewith. no change in use egress or occupancy under this application
Valuation:
$4,490,000
Permit #:
122671652-02-PL
Status:
issued
Fee:
$46,461
Permit Type:
N/A
Building Type:
O4-office buildings
Alteration type 2 - mech/hvac mechanical changes with related ductwork on part of the 8th floor as per plans filed herewith. no change in building use egress or occupancy
Valuation:
$371,950
Permit #:
122507055-03-EW-MH
Status:
issued
Fee:
$4,045
Permit Type:
N/A
Building Type:
O6-office buildings
Plumbing - alteration type 2 total renovation of the 36th and 37th floor hvac systems and modifications to existing plumbing systems. no change in use egress occupancy
Valuation:
$1,779,000
Permit #:
123680533-02-PL
Status:
issued
Fee:
$18,518
Permit Type:
N/A
Building Type:
O4-office buildings
Alteration type 2 - boiler replacement of existing boiler with new on the cellar level with minor related gas and condensate piping installations as per plans filed herewith. boiler to be replaced in-kind in existing location; no change in building use egress or occupancy
Valuation:
$155,000
Permit #:
122547226-01-EW-BL
Status:
issued
Fee:
$1,810
Permit Type:
N/A
Building Type:
N/A
Alteration type 2 - gen. constr. interior architectural changes on the 8th floor with related work on the 9th floor as per plans filed herewith. no change in building use egress or occupancy
Valuation:
$367,450
Permit #:
122507055-01-EW-OT
Status:
issued
Fee:
$4,004
Permit Type:
N/A
Building Type:
N/A
Alteration type 2 - gen. constr. interior renovation to include demolish of existing and construction of new partitions and finishes as shown on plans filed herewith
Valuation:
$1,202,500
Permit #:
122142742-01-EW-OT
Status:
issued
Fee:
$12,604
Permit Type:
N/A
Building Type:
O4-office buildings
Alteration type 2 - gen. constr. interior renovation to include demolish of existing and construction of new partitions and finishes as shown on plans filed herewith
Valuation:
$1,206,000
Permit #:
122072005-01-EW-OT
Status:
issued
Fee:
$12,635
Permit Type:
N/A
Building Type:
O4-office buildings
Alteration type 2 - mech/hvac total renovation of the 36th and 37th floor hvac systems and modifications to existing plumbing systems. no change in use egress occupancy
Valuation:
$1,779,000
Permit #:
123680533-02-EW-MH
Status:
issued
Fee:
$18,518
Permit Type:
N/A
Building Type:
O4-office buildings
Alteration type 2 - gen. constr. demolition and construction work on part of the 9th floor (telecom space) as indicated on drawings. no change in use egress or occupancy
Valuation:
$610,000
Permit #:
121536007-01-EW-OT
Status:
issued
Fee:
$6,497
Permit Type:
N/A
Building Type:
O6-office buildings
Alteration type 2 - construction equipment - fence partition changes on the 1st floor to upgrade storefront as indicated on drawings. no change in use egress or occupancy. no change to ll#5/73 compliance
Valuation:
$550,000
Permit #:
104108671-01-EQ-FN
Status:
issued
Fee:
$5,884
Permit Type:
N/A
Building Type:
O6-office buildings
Alteration type 2 - gen. constr. architectural alterations at 4th floor tenant space as indicated on drawings. no change to use egress, or occupancy
Valuation:
$350,000
Permit #:
123718325-01-EW-OT
Status:
issued
Fee:
$3,799
Permit Type:
N/A
Building Type:
O6-office buildings
Alteration type 2 - mech/hvac mechanical changes on part of the 9th floor (telecom room) as indicated on drawings. no change in use egress or occupancy
Valuation:
$1,021,780
Permit #:
121536007-02-EW-MH
Status:
issued
Fee:
$10,740
Permit Type:
N/A
Building Type:
O6-office buildings
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Sigma7 Design Group License info
Verified License
| License # | AX010538 |
| Status | Active |
| State | Pennsylvania |
| Type | Architecture Firm |
- BuildZoom verified this license was active as of June 2026.
Verify this license's status for Sigma7 Design Group at the Pennsylvania Department of State (Bureau of Professional and Occupational Affairs).
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 51777 |
| Status | Active |
| State | North Carolina |
| Type | Architect |
- BuildZoom verified this license was active as of July 2026.
Verify this license's status for Sigma7 Design Group at the North Carolina Board of Architecture.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 10302 |
| Status | Active |
| State | North Carolina |
| Type | Architect |
- BuildZoom verified this license was active as of July 2026.
Verify this license's status for Sigma7 Design Group at the North Carolina Board of Architecture.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | AL5817 |
| Status | Active |
| State | Alabama |
| Type | Architect |
- When BuildZoom last verified this license, it had an expiration date of September, 2014. Check the current license status of Sigma7 Design Group with the Alabama Board of Architects
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | JPC.0000147 |
| Status | Inactive |
| State | Connecticut |
| Type | Joint Practice |
- According to the Connecticut Department of Consumer Protection, the status of this license was at one point cancelled. However, this information may have changed. If this is your business, please update your license status.
Check this license's status for Sigma7 Design Group at the Connecticut Department of Consumer Protection.
This is a sample of licensing data; click here to access a complete history.
93
BuildZoom Score
34
Permits
- Building permit records show that Sigma7 Design Group has worked on 34 permitted projects.
Sigma7 Design Group Employees
AK
Alex Kaploun
Owner
WS
William E Serra
Owner
WS
William Edward Serra
Owner