DPR Construction Net Zero Office
The Opportunity: take a typical suburban office building nearing obsolescence and turn it into a forward thinking, sustainable, and vibrant new home for our office. This was the challenge facing us as we embarked on a rehabilitation of the one story tilt-up built in 1978.
Water use is decreased by over 51% by replacing all existing fixtures with low-flow fixtures including solar-power, dual-flush toilets, waterless urinals, 0.5 gpm lavatories, and 1.25 gpm shower heads.
Installing climate control to the existing controller, efficient MP Rotator heads, drought tolerant, native and adaptive plants, and drip irrigation reduced our landscape water consumption annually by over 60%.
Removing suspended ceilings, adding roof monitors, and installing Solatube skylights over the work stations give all employees access to natural daylight and reduces our estimated lighting energy consumption by 53% or 29,000 kwh annually.
Taking advantage of our mild climate, the building was designed to use cross and stack ventilation strategies to passively ventilate and cool the open office area. By installing operable windows at the north curtain wall and roof monitors at the south side the number of hours our HVAC system will run was reduced by 79% on an annual basis.
Acting as owner, client and design/builder, we completed our 24,000 sq. ft. multitenant office building remodel, transforming a typical San Diego suburban office building into a cutting edge facility that respects the environment, our people and our culture. The building was designed to be Net Zero Energy and is targeting LEED platinum certification by incorporating natural ventilation, daylighting, efficient HVAC and lighting systems, and renewable energy via the “Sustainable Communities” program.
To reach our Net Zero Energy goal, a roof-mounted 64 kw-AC photovoltaic panel system was installed. This system will generate enough renewable energy annually to offset our estimated annual energy consumption.
Our goal of “making the best with what we have” guided the design. Over 95% of the structural walls, slab, and roof deck were kept intact as well as some of the existing curtain wall. Instead installing new flooring systems, the existing concrete floors were sealed in high traffic areas. A number of elements were refurbished and reused such as door openings, casework, and our work stations which were relocated from our previous location. Reused materials such as lumber from pallets and demolition were used for both finish and rough carpentry.
High recycled content materials were selected such as carpet, tile, drywall, metal studs, composite wood, etc. The carpet, over 95% recycled content, reflects a “bio-mimicry” pattern. Bathroom tile came from local manufacturer and over 80% of the new wood used is FSC Certified. During demolition and construction, more than 75% of the waste generated was diverted from landfills by segregating concrete, wood, metal, cardboard, and drywall. Nearly all the ceiling tile from demolition was palletized and sent to the manufacturer for recycling.
Roof monitors, Solatubes, and efficient light fixtures ensure all employees have access to appropriate light levels, including daylight, at their individual work station.
In order to provide a healthy building, DPR followed best practices for Indoor Air Quality (IAQ). In addition, low-emitting (low/no VOC) products were used throughout the building.
This project is pursuing LEED for New Construction v.2.2 Platinum Certification.
- This project is pursuing LEED for New Construction v.2.2 Platinum Certification.
- Water use is decreased by over 51%.
- Reduces estimated lighting energy consumption by 53% or 29,000 kwh annually.
1520 Fifth Avenue, Suite 2400
Seattle, WA 98101-1345
206-623-4646 Ext. 2448
5010 Shoreham Place
Sna Diego, CA 92122
Zorana Bosnic, RIBA, LEED AP is a Vice President and the Sustainable Design Director with HOK in San Francisco. Educated at the Architectural Association School of Architecture, she started her carrier in London, joined HOK in Hong Kong and then moved to San Francisco office in 1999. As a Senior Project Designer she worked on numerous projects in Europe, South East Asia, Middle East and West Coast USA. Her expertise includes projects in office, corporate commercial, campus design, and hospitality sector. She has a keen interest in sustainable design technologies applied to façade engineering, focusing on energy savings and daylight enhancement technologies. To ensure the practice maintains its expertise, Zorana combines her project design work at HOK with research and active participation in international sustainable organizations, as well as promotion of sustainable practices throughout the community. She brings her breadth of design leadership, technological knowledge and an international perspective to this key role at HOK.
A native of San Diego, Kevin deFreitas is a licensed architect and developer who is extremely passionate about the quality of the built environment. Kevin deFreitas Architects, AIA was established in 1998 as a multi-disciplinary practice to expand beyond the traditional boundaries of design, allowing the firm to self-develop several experimental and innovative urban in-fill projects that otherwise would not have been achievable. Understanding architecture to be the art of listening to both the client and the site, and the craft of solving problems elegantly, the firm’s portfolio contains appropriate, creative, and sustainable designs. These range from institutions and retail, to private homes and interiors, and have been widely published and recognized for clearly expressing optimism, a meaningful connection to place, straight forward materiality, thoughtful sustainability, and a strong visual presence. Kevin’s collegiate studies began at the University of San Diego and culminated when he graduate cum laud with a Bachelor’s of Architecture from the University of Arizona in 1992. Along the way he studied at Cal Berkeley and Syracuse University’s study abroad program in Florence Italy. Kevin’s education continues; every project, and each client, presents new opportunities to learn and grow.
A principal of ARCHITECTS hanna gabriel wells, Randy Hanna is active in community and his profession.
Mr. Hanna has over 24 years of architectural experience with a multitude of building types. He has been instrumental in the design of several College & University projects, Corporate Office Campuses, Institutional facilities and specialty projects ranging from grocery stores to rowing clubs. ARCHITECTS hanna gabriel wells are proven leaders in sustainable design– their projects reflecting deliberate efforts towards environmental responsibility. Of note, their own office was designated as San Diego’s first “Net Zero Energy” commercial building and received LEED Gold Certification. The firm has received numerous design awards for their work. Randy was instrumental in establishing the San Diego AIA Chapter Design Awards program and served as chair for three years. He also served for two years on the CCAIA Awards committee. His involvement with education continues through his involvement as a guest juror for Arizona State University, Woodbury University and the New School of Architecture in San Diego.
President of LPA Inc., Dan Heinfeld has been the partner in charge of design since 1986 and is responsible for the overall design direction of the firm. During his tenure as President, LPA has been recognized with 118 AIA awards from national, state and component chapters with an unprecedented 33 years of continuous recognition from the AIAOC Chapter. Heinfeld has made sustainable design the focus of his career and the firm’s as well. A LEED accredited professional since 2001, Heinfeld has lectured to community groups and development organizations, which include California State Polytechnic University, Pomona; California State University, Fullerton; and the University of Arizona. His message revolves around the importance of sustainable design and its legacy on the condition of our physical environment. Through Heinfeld’s leadership, LPA has completed 12 LEED certified projects with another 12 in construction and 30 more in design/construction document –all in the state of California.
Brad Jacobson, LEED AP, AIA, currently leads some of EHDD’s high performance projects including a zero energy, LEED Platinum office building for the David & Lucile Packard Foundation and the carbon neutral Nevada State College Master Plan. He served as Project Architect on Carnegie Institution’s Global Ecology Research Center, an interdisciplinary research center at Stanford University that reduced carbon emissions from energy and materials by over 60% and was named a National AIA Top Ten Green Building in 2007. Brad was Project Manager on Stanford’s Kavli Institute for Particle Astrophysics and Cosmology, a 25,000 square-foot research facility featuring exceptional daylighting and an underfloor air distribution system, and completed a feasibility study, sponsored by Stanford University’s School of Engineering, for an innovative dormitory and research laboratory designed to test and demonstrate sustainable building methods and technologies. Brad received his Bachelors of Arts in Urban Studies from Stanford University and a Masters of Architecture from the University of Pennsylvania. He is co-founder of Bay Area Leadership in Sustainable Architecture, or BALSA, which brings together leading architects to accelerate progress towards a sustainable future. He taught a course entitled “Green Architecture” at Stanford University’s School of Engineering from 2003-2008.