| Award | Arlington Library Rehabilitation | Design and Construction | Sienia Construction Inc | $9.7M | Competitive Sealed Bids/Pre-Qualified List | Jun 2, 2026 | 85025B0035001 |
| Award | B085-124M Metropolitan Recreation Center Dehumidification System Recon. | Parks and Recreation | Sienia Construction Inc | $944K | Competitive Sealed Bids | Apr 28, 2026 | 84626B0016001 |
| Award | B073-415MA Prospect Park Garage Compound Maintenance Building Construction, Brooklyn | Parks and Recreation | Sienia Construction Inc | $7.8M | Competitive Sealed Bids/Pre-Qualified List | Apr 10, 2026 | 84625B0118001 |
| Award | Renewal for On Call General Construction Services | Homeless Services | Sienia Construction Inc | $3.7M | Renewal | Jan 26, 2026 | 07121B0004001R001 |
| Award | BG-718MA: Marlboro Playground and Cadman Plaza Park Comfort Station Reconstruction, Brooklyn | Parks and Recreation | Sienia Construction Inc. | $3.5M | Competitive Sealed Bids | Sep 11, 2025 | 84623B0099001 |
| Award | General Contracting at Various Locations (Bronx) Renewal #1 | Police Department | Sienia Construction Inc. | $6.5M | Renewal | Jun 23, 2025 | 05621B0010001R001 |
| Award | General Contracting for Various Locations (Queens) Renewal #1 | Police Department | Sienia Construction Inc. | $6.5M | Renewal | Jun 23, 2025 | 05621B0009001R001 |
| Award | When & Where General Contracting, Specialty Emergency Facilities Services for Various DOT Locations | Transportation | Sienia Construction Inc. | $1.9M | Renewal | Apr 28, 2025 | 84122B0007001R001 |
| Award | Furnish and install building safety netting | Fire Department | Sienia Construction Inc. | $1.5M | M/WBE Noncompetitive Small Purchase | Feb 18, 2025 | 05725W0027001 |
| Award | On Call General Construction Services at PATH | Homeless Services | Sienia Construction Inc. | $433K | M/WBE Noncompetitive Small Purchase | Oct 23, 2024 | 07124W0003001 |
| Award | M208D-119M: Construction of a Comfort Station in Harlem River Park, Manh | Parks and Recreation | Sienia Construction Inc. | $4.6M | Competitive Sealed Bids | May 16, 2024 | 84621B0038001 |
| Award | X092-119M-RECONSTRUCTION OF A COMFORT STATION IN WOODLAWN PLAYGROUND, BOROUGH OF THE BRONX | Parks and Recreation | Sienia Construction Inc. | $1.5M | Competitive Sealed Bids | Mar 18, 2024 | 84621B0152001 |
| Award | R028-120M-Tappen Park Village Hall Roof Reconstruction | Parks and Recreation | Sienia Construction Inc. | $3.4M | Competitive Sealed Bids | Jul 18, 2023 | 84621B0065001 |
| Award | Fort Washington Bathroom Reconstruction | Homeless Services | Sienia Construction Inc. | $2.4M | Competitive Sealed Bids | Jul 13, 2023 | 07122B0004001 |
| Award | M199-119M Construction of Comfort Station in Monsignor Kett | Parks and Recreation | Sienia Construction Inc. | $3.9M | Competitive Sealed Bids | Jun 16, 2023 | 84621B0007001 |
| Award | B087-115MA1: RECONSTRUCTION OF THE BATHHOUSE In Sunset Park | Parks and Recreation | Sienia Construction Inc. | $5.8M | Competitive Sealed Bids | Apr 26, 2023 | 84622B0036001 |
| Award | When AND Where General Contracting and Emergency Services | Transportation | Sienia Construction Inc. | $1.9M | Competitive Sealed Bids | Apr 24, 2023 | 84122B0007001 |
| Award | On Call General Construction Services on an as needed basis | Homeless Services | Sienia Construction Inc. | $5.6M | Competitive Sealed Bids | Mar 24, 2023 | 07121B0004001 |
| Award | R105-119MA-Prall Playground Comfort Station Reconstruction | Parks and Recreation | Sienia Construction Inc. | $1.2M | Competitive Sealed Bids | Feb 14, 2023 | 84622B0001001 |
| Award | Reconstruction of the Lefferts House Located Along Flatbush Avenue Between The Zoo and The Willink Entrance in Prospect Park, BROOKLYN | Parks and Recreation | Sienia Construction Inc. | $2.3M | Competitive Sealed Bids | Aug 31, 2022 | B073-317M |
| Award | Wyckoff House Park Comfort Station Construction | Parks and Recreation | Sienia Construction Inc. | $4.9M | Competitive Sealed Bids | Dec 16, 2021 | b376-118m |
| Award | Prospect Park Lefferts House Reconstruction | Parks and Recreation | Sienia Construction Inc. | $2.3M | Competitive Sealed Bids | Nov 26, 2021 | B073-317M |
| Award | RECONSTRUCTION OF ENTRANCE LOBBY | Parks and Recreation | Sienia Construction Inc. | $883K | Competitive Sealed Bids | Jun 25, 2020 | 84619B0142001 |
| Award | RECONSTRUCTION OF A COMFORT STATION | Parks and Recreation | Sienia Construction Inc. | $2.3M | Competitive Sealed Bids | May 1, 2020 | 84619B0075001 |
| Award | RECONSTRUCTION OF COMFORT STATION IN NEWPORT PLAYGROUND | Parks and Recreation | Sienia Construction Inc. | $882K | Competitive Sealed Bids | Aug 1, 2019 | 84617B0182001 |
| Award | RECONSTRUCTION OF A COMFORT STATION | Parks and Recreation | Sienia Construction Inc. | $681K | Competitive Sealed Bids | Jul 31, 2019 | 84617B0176001 |