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Home / Residential 42 SHARON STREET, BROOKLYN ARCHITECT . nC2 Architecture LLC PROJECT SIZE . 3,600 SF PROJECT COST . SCOPE . full MEP/FP design and construction administration services Go 42 SHARON STREET, BROOKLYN A ground up construction of a single family home in Brooklyn. Altera Engineering was retained as a project’s MEP engineer in part because the building’s complex interior geometry required a thoughtful approach that most small MEP firms lack. Altera Engineering consulted the owner on high performance building strategies, such as passive heating and cooling, insulation and envelope air-tightness, intelligent lighting controls, highly efficient domestic water heating and continuous ventilation with energy recovery. With the exception of domestic water heating, the building does not use natural gas or any other fuel for heating, and is cooled and heated with a variable-refrigerant flow system. Highly insulated envelope, and fuel free heating are expected to save 15 metric tons of Carbon Dioxide emissions on an annual basis. Altera Engineering efficiently and successfully secured utility connection approvals and assisted the client in resolving filing and approval issues.

Home / Landmarks 347 WEST END AVENUE ARCHITECT . Lamb & Rich PROJECT SIZE . PROJECT COST . SCOPE . Morozov provided MEP engineering design and approval services for all mechanical, plumbing and electrical systems. Go Go This Eclectic Renaissance/Revival building was designed with a limestone façade and gabled tile roof by famed architects Lamb & Rich as part of an original row of 14 houses in 1891. The home’s first owner was Charles F. Rand who made his fortune in the mining industry in Cuba and Spain. In the 1950’s, the property was converted to nine apartments, and now the new owners are converting back to a single family residence. The scope of the conversion included an additional set back fifth floor, with an elevator overrun, roof bulkhead, and copper and glass skylight atop it. The current three-story-tall projecting rear yard addition will be demolished and replaced with a four-story-tall rear yard addition. A Juliette balcony, clad in copper, will jut out just into the canopy of a 130- to 140-year-old cherry tree. This is Altera Engineering's third project along the historic West End Avenue, 915 West End Avenue and 309 West 86th Street. The Altera Engineering team worked closely with the architect to thoughtfully integrate new infrastructure into the existing historic shell.

Home / Residential 133 EAST 91ST STREET TOWNHOUSE, NEW YORK ARCHITECT . Ben Fuqua PROJECT SIZE . About 4,500 SF PROJECT COST . $ 5 million SCOPE . Full MEP/FP design and construction administration services Go 133 EAST 91ST STREET TOWNHOUSE, NEW YORK A full gut renovation and conversion of a multifamily building into a single family townhouse. 133 East 91st Street is one of six identical Queen Anne rowhouses completed in 1896 for a local developer John Weber. The building retains its original façade of red brick and brownstone along with a raised stoop and paved entry court, and a 20-ft rear garden. Altera Engineering worked hand in hand with the architect to seamlessly integrate all new heating/cooling and other building infrastructure into 17.5-foot wide existing shell. Altera Engineering consulted the owner on high performance building strategies, such as passive heating and cooling, insulation and envelope air-tightness, highly efficient domestic water heating and continuous ventilation with energy recovery. With the exception of domestic water heating, the building does not use natural gas or any other fuel for heating, and is cooled and heated with a variable-refrigerant flow system. Highly insulated envelope, and not relying on gas for heating are expected to save 20 metric tons of Carbon Dioxide emissions on an annual basis.

A new all-affordable apartment complex was recently approved for 30 Water Street in Ossining, Westchester County, on the former site of the Village Department of Public Works property. Developer WBP Development LLC received final approval for financial assistance from the Westchester County Industrial Development Agency on August 29. The $94 million project was designed to transform the former industrial site into a fully affordable housing development. The development will consist of two new buildings with 109 rental apartments in total, serving households with incomes and rents ranging from 30 to 80 percent are a median income. The residences include 40 one-bedroom units, 60 two-bedroom units, and nine three-bedroom units. The project will also feature municipal parking, 3,745 square feet of retail space, and 3,968 square feet of community meeting space. A linear park along the Sing Sing Kill greenway, currently in need of environmental remediation, will also be included. Residents of the property will have access to 2,300 square feet of amenity space, including a roof deck, community areas, a fitness center, and common laundry service. “We applaud the developer of this innovative project that will transform a former industrial site into an attractively designed, fully affordable housing development,” said Westchester County executive George Latimer. “This is the kind of housing that is critically important for Westchester’s economic vitality.” Home / Multifamily 30 WATER STREET, OSSINING ARCHITECT . PROJECT SIZE . PROJECT COST . SCOPE . Design, approvals and construction administration of mechanical, plumbing, sprinkler, electrical and fire alarm systems. Go Go A new all-affordable apartment complex was recently approved for 30 Water Street in Ossining, Westchester County, on the former site of the Village Department of Public Works property. Developer WBP Development LLC received final approval for financial assistance from the Westchester County Industrial Development Agency on August 29. The $94 million project was designed to transform the former industrial site into a fully affordable housing development. The development will consist of two new buildings with 109 rental apartments in total, serving households with incomes and rents ranging from 30 to 80 percent are a median income. The residences include 40 one-bedroom units, 60 two-bedroom units, and nine three-bedroom units. The project will also feature municipal parking, 3,745 square feet of retail space, and 3,968 square feet of community meeting space. A linear park along the Sing Sing Kill greenway, currently in need of environmental remediation, will also be included. Residents of the property will have access to 2,300 square feet of amenity space, including a roof deck, community areas, a fitness center, and common laundry service. “We applaud the developer of this innovative project that will transform a former industrial site into an attractively designed, fully affordable housing development,” said Westchester County executive George Latimer. “This is the kind of housing that is critically important for Westchester’s economic vitality.”

Home / Landmarks 848 CARROLL STREET, BROOKLYN ARCHITECT . TRIARCH PROJECT SIZE . $ 2.5 million PROJECT COST . $ 170,000,000 SCOPE . Full MEP/FP design Go Go Full gut renovation and rear addition to a landmarked townhouse located in Brooklyn’s Park Slope Historic District. The history and development of the Park Slope Historic District is closely related to that of Prospect Park. The area encompassed by the park and the Historic District was the scene of a major battle in the revolutionary war between the Continental Army under George Washington and the British Army in August of 1776. At that time and until the 1850’s this area remained essentially rural, consisting largely of farmland with rolling hills to the east. In sum, the completion of Prospect Park and construction of the Brooklyn Bridge in 1883 were the two major factors in the development of the area. Carroll Street- named after Charles Carroll, a signer of the Declaration of Independence- is one of the most serene and charming streets in the District. 848 Carroll is a neoclassical four-story red brick with limestone trim, was designed by William B. Greenman and completed in 1905 and described in the AIA Guide to New York City as “a narrow bay-windowed neo-classical exile from the Upper East Side” Altera Engineering worked closely with the architect and owners to seamlessly integrate all new building infrastructure into the existing shell. Altera Engineering consulted the owner on high performance building strategies, such as passive heating and cooling, insulation and envelope air-tightness, highly efficient domestic water heating and continuous ventilation with energy recovery. With the exception of domestic water heating, the building does not use natural gas or any other fuel for heating, and is cooled and heated with a variable-refrigerant flow system.

A 2-phase senior supportive housing project in Inwood neighborhood of Manhattan developed by RiseBoro and Coconut Properties. Phase I is a 112,000 SF 9-storey building comprising of 156 studio and 1-bedroom apartments, as well as community engagement spaces. In addition, the ground floor will be a new 9,000 SF home to Rocky Mountain Baptist Church. Founded in 1973, RiseBoro Community Partnership is a non-profit organization based in Bushwick, Brooklyn that offers housing and family services. RiseBoro has been responsible for the development of over 3,000 units of affordable housing, ranging from single-family homes to scattered site rehabs to large mixed use developments. Through various home ownership programs, RiseBoro has been responsible for the sponsorship and marketing of over 1,200 units to first-time home buyers. Currently, RiseBoro manages over 1,800 affordable units that provide permanent housing for low to moderate-income families, senior citizens, and a host of special needs populations including formerly homeless families, veterans, physically disabled, and victims of domestic violence. 37 Hillside Avenue is being designed to meet US Passive House Institute standards for energy efficiency. Passive House standard emphasizes air-tight, continuously insulated building envelope without thermal bridges, high performance windows and balanced heat and moisture recovery ventilation. Passive House buildings are expected to consume 75-90% less energy than traditional buildings. The building is cooled and heated with a variable-refrigerant flow heat recovery system. Packaged rooftop energy recovery ventilators supply filtered and conditioned fresh air directly into each apartment and exhaust from kitchens and bathrooms in a continuous ventilation cycle. Hot water for domestic use is generated by high efficiency gas-fired water heaters. Home / Multifamily 37 HILLSIDE AVE, NEW YORK, NY ARCHITECT . Architecture In Formation & SLCE PROJECT SIZE . Phase I: 111,000 SF . Phase II: 154,440 SF PROJECT COST . SCOPE . HVAC, sprinkler, plumbing and electrical power, fire alarm design and construction administration Go Go A 2-phase senior supportive housing project in Inwood neighborhood of Manhattan developed by RiseBoro and Coconut Properties. Phase I is a 112,000 SF 9-storey building comprising of 156 studio and 1-bedroom apartments, as well as community engagement spaces. In addition, the ground floor will be a new 9,000 SF home to Rocky Mountain Baptist Church. Founded in 1973, RiseBoro Community Partnership is a non-profit organization based in Bushwick, Brooklyn that offers housing and family services. RiseBoro has been responsible for the development of over 3,000 units of affordable housing, ranging from single-family homes to scattered site rehabs to large mixed use developments. Through various home ownership programs, RiseBoro has been responsible for the sponsorship and marketing of over 1,200 units to first-time home buyers. Currently, RiseBoro manages over 1,800 affordable units that provide permanent housing for low to moderate-income families, senior citizens, and a host of special needs populations including formerly homeless families, veterans, physically disabled, and victims of domestic violence. 37 Hillside Avenue is being designed to meet US Passive House Institute standards for energy efficiency. Passive House standard emphasizes air-tight, continuously insulated building envelope without thermal bridges, high performance windows and balanced heat and moisture recovery ventilation. Passive House buildings are expected to consume 75-90% less energy than traditional buildings. The building is cooled and heated with a variable-refrigerant flow heat recovery system. Packaged rooftop energy recovery ventilators supply filtered and conditioned fresh air directly into each apartment and exhaust from kitchens and bathrooms in a continuous ventilation cycle. Hot water for domestic use is generated by high efficiency gas-fired water heaters.

A 6-story, 63-unit supportive housing project in Nodine Hill neighborhood of Yonkers developed by Westhab Inc. Yonkers-based Westhab is a community development, social and housing services organization that builds and manages high-quality affordable and supportive housing in Westchester County and New York City. To date Westhab has developed over 900 units of housing with an investment of over $134 million Dayspring Commons will consist of four one-bedrooms, 45 two-bedrooms and three three-bedrooms. Formerly homeless people are expected to occupy 30 of the units; 10 of those apartments will target young adults with children and 20 of those units will target families with a mentally disabled head of household. Another 21 units will be affordable housing for families that earn less than 50 percent of the area median income for Westchester County. The proposed complex would sit next to the former Good Shepherd Presbyterian Church at 203 Elm St. The church is currently being renovated by Westhab and it is now called the Dayspring Community Center. Buildings’ mechanical systems include high efficiency condensing boilers designed to operate with low temperature water. Variable speed pumps, high output baseboard radiators, energy recovery ventilators and variable refrigerant flow systems for common areas. The building was provided with a gas-fired emergency generator. The project is designed to meet the latest Enterprise Green Communities requirements for energy and water conservation, resident health and well-being and resiliency. The buildings are at least 15% more energy efficient than the current energy code. Home / Multifamily DAYSPRING COMMONS, 227 ELM, YONKERS ARCHITECT . Aufgang Architects PROJECT SIZE . 65,000 SF PROJECT COST . $ 45,000,000 SCOPE . HVAC, sprinkler, plumbing and electrical power, fire alarm design and construction administration Go Go A 6-story, 63-unit supportive housing project in Nodine Hill neighborhood of Yonkers developed by Westhab Inc. Yonkers-based Westhab is a community development, social and housing services organization that builds and manages high-quality affordable and supportive housing in Westchester County and New York City. To date Westhab has developed over 900 units of housing with an investment of over $134 million Dayspring Commons will consist of four one-bedrooms, 45 two-bedrooms and three three-bedrooms. Formerly homeless people are expected to occupy 30 of the units; 10 of those apartments will target young adults with children and 20 of those units will target families with a mentally disabled head of household. Another 21 units will be affordable housing for families that earn less than 50 percent of the area median income for Westchester County. The proposed complex would sit next to the former Good Shepherd Presbyterian Church at 203 Elm St. The church is currently being renovated by Westhab and it is now called the Dayspring Community Center. Buildings’ mechanical systems include high efficiency condensing boilers designed to operate with low temperature water. Variable speed pumps, high output baseboard radiators, energy recovery ventilators and variable refrigerant flow systems for common areas. The building was provided with a gas-fired emergency generator. The project is designed to meet the latest Enterprise Green Communities requirements for energy and water conservation, resident health and well-being and resiliency. The buildings are at least 15% more energy efficient than the current energy code.

Designed by the prolific Upper West Side architect George F. Pelham for the developer Joseph H. Davis, this building was constructed in 1906 as a small multiple dwelling (flats) and once known as the Albea. Located on the north side of West 93rd Street ninety-eight feet east of Riverside Drive, this six-story building faced in red brick with ironspot headers and stone trim is seventy-five feet wide and dumbbell-shaped in plan. The facade is capped by a modillioned metal cornice. An original wrought-iron fire escape is located at the center of the facade. The owners retained Altera Engineering in their bid to renovate and reposition the building as an upmarket rental property steps away from the Riverside park. Engineering scope included gut renovation of all vacant apartment units and building systems upgrade. A new high efficiency condensing boiler plant was designed to replace an outdated (once coal-fired) steam system. To fully take advantage of the condensing boiler efficiencies, all new hydronic radiators were selected around low water temperatures. Variable speed pumps were selected for low flow, wide delta-t of the water to minimize motor horse power. Domestic water was upgraded with indirect water storage tanks fed by boilers via plate and frame heat exchangers. The Altera Engineering team had to work around existing occupied apartments to minimize disruption to tenants. Altera Engineering provided MEP engineering design and approval services for all mechanical, plumbing and electrical systems. Home / Multifamily 325 WEST 93RD STREET ARCHITECT . Union Street Studio PROJECT SIZE . PROJECT COST . SCOPE . MEP engineering design and approval services for all mechanical, plumbing and electrical systems Go Go Designed by the prolific Upper West Side architect George F. Pelham for the developer Joseph H. Davis, this building was constructed in 1906 as a small multiple dwelling (flats) and once known as the Albea. Located on the north side of West 93rd Street ninety-eight feet east of Riverside Drive, this six-story building faced in red brick with ironspot headers and stone trim is seventy-five feet wide and dumbbell-shaped in plan. The facade is capped by a modillioned metal cornice. An original wrought-iron fire escape is located at the center of the facade. The owners retained Altera Engineering in their bid to renovate and reposition the building as an upmarket rental property steps away from the Riverside park. Engineering scope included gut renovation of all vacant apartment units and building systems upgrade. A new high efficiency condensing boiler plant was designed to replace an outdated (once coal-fired) steam system. To fully take advantage of the condensing boiler efficiencies, all new hydronic radiators were selected around low water temperatures. Variable speed pumps were selected for low flow, wide delta-t of the water to minimize motor horse power. Domestic water was upgraded with indirect water storage tanks fed by boilers via plate and frame heat exchangers. The Altera Engineering team had to work around existing occupied apartments to minimize disruption to tenants. Altera Engineering provided MEP engineering design and approval services for all mechanical, plumbing and electrical systems.

Home / Residential 848 CARROLL STREET, BROOKLYN ARCHITECT . TRIARCH PROJECT SIZE . $ 2.5 million PROJECT COST . $ 170,000,000 SCOPE . Full MEP/FP design Go 848 CARROLL STREET, BROOKLYN Full gut renovation and rear addition to a landmarked townhouse located in Brooklyn’s Park Slope Historic District. The history and development of the Park Slope Historic District is closely related to that of Prospect Park. The area encompassed by the park and the Historic District was the scene of a major battle in the revolutionary war between the Continental Army under George Washington and the British Army in August of 1776. At that time and until the 1850’s this area remained essentially rural, consisting largely of farmland with rolling hills to the east. In sum, the completion of Prospect Park and construction of the Brooklyn Bridge in 1883 were the two major factors in the development of the area. Carroll Street- named after Charles Carroll, a signer of the Declaration of Independence- is one of the most serene and charming streets in the District. 848 Carroll is a neoclassical four-story red brick with limestone trim, was designed by William B. Greenman and completed in 1905 and described in the AIA Guide to New York City as “a narrow bay-windowed neo-classical exile from the Upper East Side” Altera Engineering worked closely with the architect and owners to seamlessly integrate all new building infrastructure into the existing shell. Altera Engineering consulted the owner on high performance building strategies, such as passive heating and cooling, insulation and envelope air-tightness, highly efficient domestic water heating and continuous ventilation with energy recovery. With the exception of domestic water heating, the building does not use natural gas or any other fuel for heating, and is cooled and heated with a variable-refrigerant flow system.

233 BUTLER STREET, GOWANUS, BROOKLYN SCOPE . HVAC, sprinkler, plumbing and electrical power, fire alarm design and construction administration PROJECT COST . WITHHELD Home / Commercial 233 BUTLER STREET, GOWANUS, BROOKLYN ARCHITECT . Union Street Studio PROJECT SIZE . 8,000 GSF PROJECT COST . WITHHELD SCOPE . HVAC, sprinkler, plumbing and electrical power, fire alarm design and construction administration Go Go The 104-year-old building at 233 Butler St., between Nevins and Bond streets, was the headquarters of the American Society for the Prevention of Cruelty to Animals in New York from 1913 to 1979. The 2-story 8,000 SF building was designed in Renaissance Revival style by Renwick, Aspinwall & Tucker. The building was purchased in 2016 by a group of developers and Altera Engineering was retained to assist in upgrade, enlargement and repositioning of the property to several unique food and beverage uses such as Public Records - a Hi-Fi Cafe, Bar and Sound Room. Altera Engineering provided MEP engineering design and approval services, working closely with architects and owners to upgrade building’s infrastructure and integrate state-of-the-art mechanical systems into the existing historic shell. To more precisely match occupancy profiles, mechanical systems for the dance club included a primary dedicated outdoor air system (DOAS) with heat recovery, and a secondary high efficiency variable refrigeration system.

Home / Landmarks 915 WEST END AVENUE ARCHITECT . PROJECT SIZE . PROJECT COST . SCOPE . Design, approvals and construction administration of mechanical, plumbing, sprinkler, electrical and fire alarm systems. Go Go 915 West End Avenue is a 120,000 SF 15-story multifamily building commissioned by a prolific upper west side builder Joseph Paterno (whose initials were inscribed above the entrance), designed by Rosario Candela and completed in 1922 at a cost of approximately $625,000. The building was designed in Renaissance Revival style, and is laid out as two wings around a central core with outer court. Boiler room, laundry facility, oil tank, and incoming services are located in the basement. Lobby and 94 apartments are located on floors 1 through 15. In 2015 the building was included into Riverside-West End Historic District Extension II, and is subject to certain Landmarks restrictions. Following the $ 85.5 million acquisition by a group of investors, Altera Engineering was retained to evaluate the existing heating, plumbing, gas and power distribution systems. Our engineers worked closely with the owner’s architects and marketing team to identify and carry out short payback upgrades to support the investors’ conversion and repositioning program to the ‘best-in-class’ multifamily rental. 915 West End Avenue is one of several Altera Engineering projects along the historic West End Avenue, 347 West End and 309 West 86th Street.

This project, for New York City’s Department of Cultural Affairs, transformed a five-story historic former public school to better house four arts groups and one community-service organization. Built in 1894, PS 122 was originally a public school (hence the name). Since the 1970’s the building has been inhabited by a non-profit collaborative, daycare center and an AIDS drop in center. The primary objective of this project was to bring the building up to code and upgrade the mechanical and fire protection systems. Additionally the building needed significant reorganization and alterations to its interior spaces. The design scope included addition at the roof, to connect the means of egress at the fifth floor. The project was required to meet LL86 requirements. Mechanical systems included: A packaged air-cooled modular chiller plant designed with an 18-degree temperature difference to reduce pumping and piping Variable primary pumping A dedicated outdoor air system (DOAS) with energy recovery and demand-based ventilation controls Sensible-only 4-pipe fan coils Home / Cultural PS 122 COMMUNITY ARTS CENTER ARCHITECT . Deborah Berke Partners PROJECT SIZE . 50,000 GSF PROJECT COST . $ 32 million SCOPE . HVAC design Go Go This project, for New York City’s Department of Cultural Affairs, transformed a five-story historic former public school to better house four arts groups and one community-service organization. Built in 1894, PS 122 was originally a public school (hence the name). Since the 1970’s the building has been inhabited by a non-profit collaborative, daycare center and an AIDS drop in center. The primary objective of this project was to bring the building up to code and upgrade the mechanical and fire protection systems. Additionally the building needed significant reorganization and alterations to its interior spaces. The design scope included addition at the roof, to connect the means of egress at the fifth floor. The project was required to meet LL86 requirements. Mechanical systems included: A packaged air-cooled modular chiller plant designed with an 18-degree temperature difference to reduce pumping and piping Variable primary pumping A dedicated outdoor air system (DOAS) with energy recovery and demand-based ventilation controls Sensible-only 4-pipe fan coils