Washington, D.C.

Owner: World Wildlife Fund Inc.

Location: 1250 24th Street NW, Washington, D.C. 20037


Program: 12,937 square feet of office space—divided into a north office and a south office—on the ground floor of the World Wildlife Fund’s eight-story building in the West End neighborhood of Washington, D.C. Envision Design originally renovated the organization’s offices in 2001–2002; this project transformed underused retail space, office space, and a former restaurant into two English basement offices, each featuring open-plan workstations, private offices, a conference room, storage space, and a kitchen. The two spaces are divided by the bottom level of an atrium that cuts through the building. During the renovation, Envision also undertook a LEED EB (version 2) upgrade for the entire building: the team made improvements to 25-year-old systems, including updating air-handling units to harness freely available cool air in winter. They also reduced water usage by installing low-flow fixtures and by landscaping with local, drought-tolerant plants, and added a green roof to help reduce stormwater runoff.

Design Concept and Solution: Charged with designing a model office to inform the World Wildlife Fund’s plans for future offices, the architects set out to create an open, collaborative, sustainable prototype. Since they were working with two partly underground rooms, giving the offices a sense of openness and enough daylight access proved a challenge. To add height to the spaces and lessen the feeling of being in a basement, the architects left the corridor ceilings open to the building’s concrete structure. In a departure from the organization’s existing offices, they incorporated large areas of open-plan workstations and reduced the size of private offices, allowing daylight to penetrate farther into each room. The Envision team painted the walls (and the drywall portions of the ceilings) bright white to reflect more light, and they chose light fixtures with daylight sensors for the areas near windows to help conserve energy. The architects used a lot of glass to avoid cutting off segments of the offices from views and light: each conference room is faced with glass, and the private offices—many of them bordering windows—incorporate glass, too. Modular workstations and demountable partitions give the organization the flexibility to adapt their space as their needs change. FSC-certified wood and neutral carpet tile round out the offices’ simple, clean, sustainable palette.

Completion Date:
First floor north office space: December 2010
First floor south office space: August 2011
LEED EB v2 certification: August 2011
Green roof: March 2010

Gross square footage:
First floor north office space: 3,682 SF
First floor south office space: 9,255 SF
Building total: 251,707 SF

Construction cost:
First floor north office space: $1,239,010
First floor south office space: $1,613,463


Owner: World Wildlife Fund Inc.

Envision Design, PLLC
1211 Connecticut Ave NW, Suite 250
Washington DC, 20036
Tel: 202.775.9000
Fax: 202.775.9001

Personnel in architect's firm who should receive special credit:
Principal in Charge: Diana Horvat, AIA, LEED AP
Project Manager: Dave Bloom, AIA, LEED AP
Project Designer: Emily McVeigh, IIDA, LEED AP BD+C

Professional Project and Construction Manager:
Advanced Project Management Inc.
4530 Walney Road, Suite 202
Chantilly, VA 21510
Michael Catlett, Certified CM, LEED AP, GRP, Principal

MEP: WSP Flack + Kurtz, 1600 Wilson Blvd., Suite 1200, Arlington, VA 22209. Brian Carroll, Project Manager

Tadjer-Cohen-Edelson Associates, Inc, 1109 Spring Street, 5th Floor, Silver Spring, MD 20910. Ervin Rogers, PE

Green Roof: Advanced Project Management Inc. & Prospect Water Proofing Company

Data Center Concept/IT Package Provider:
PTS-Datacenter Solutions, Inc., 568 Commerce Street, Franklin Lakes, NJ 07417. Michael Petrino, Vice President

Commissioning Agent:
CPM Scheduling, LLC
4201 Wilson Blvd., Suite 110-226, Arlington, VA 22203. James McQuade, Commissioning Agent

General contractor:
First floor north office space:
James G. Davis Construction Corporation
12530 Parklawn Drive
Rockville, MD 20852
Jim Davis, President

First floor south office space:
Forrester Interiors LLC
12231 Parklawn Drive
Rockville, MD 20850
Rick Forrester, Vice President

Green roof contractor:
Prospect Waterproofing Company
118 Acacia Lane
Sterling, VA 20166
James Stamer, President

Sean Dorsy
Envision Design
Tel: 202.775.9000

Renderer(s) and credit as they should appear:
Envision Design, Dave Bloom AIA

CAD system, project management, or other software used: Archicad



Other: Green Roof – Extensive Garden Roof by Hydrotech. Assembly included: Monolithic Membrane 6125EV-FR, Styrofoam Brand Insulation, Hydroflex 30 Roofing Membrane, Polyethylene Root Barrier, and Gardendrain GR30

Metal doors: Curries Company

Wood doors: Oskosh Door Company and VT Industries, Inc

Locksets: Schlage

Hinges: McKinney

Closers: LCN

Pulls: Voli

Security devices: Card reader, Prop sensor, Magnetic lock, Infrared Sensor

Interior finishes
Acoustical ceilings: Armstrong Optima and Ultima Ceiling Tile

Suspension grid: Armstrong Silhouette

Demountable partitions: Inscape Inform

Cabinetwork and custom woodwork:
Substrate: Roseburg Melamine
Finish: Plastic Laminate: Wilsonart
Countertop: 3-Form 100 Percent

Paints and stains: Sherwin Williams Duron

Plastic laminate: See above

Resilient flooring:
Atmosphere Recycled Rubber Flooring
Roppe SafeTcork

Carpet: Lees Carpet, “It’s a Sign” Collection

Office furniture: Teknion: Origami, Umbria, Ability, Ledger

Workstations: Inscape: Platform and Storwall

Interior ambient lighting:
Lite Control-Arcos Slot
Lightolier HP90
Mark Lighting – Slot 4
Lightolier Track Lighting – 8276

Downlights: Lightolier – LED c420LEDDL

Task lighting: Human Scale

Controls: WattStopper

Pantry Faucet: Elkay LK7921SSS

Restroom Aerator: Niagrara Conservation .5gpm

Restroom Urinal: Zurn Ecovantage

Fitness Room Shower Head: Utility Savers Water Saver Supreme Showerhead