California Preservation Awards Sponsorship

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The 2026 Design Awards Event

A view from above of a circular, multi-level courtyard with ornate railings, white columns, red tile floors, and a central fountain surrounded by greenery. Spiral staircases connect the different levels.We're celebrating 24 award winning projects, as well as the Trustee's Awards for Excellence and four President's Awards at the Mission Inn in downtown Riverside. This special celebration is followed by a ticketed reception with food and drinks. Purchase your tickets before they sell out!

Hangar One Rehabilitation

Owner / Client
Chris Alwan – Planetary Ventures

Client Representative/Project Management Services
Puneet Moonach – CBRE/Turner & Townsend

Project Lead
Andrew Murray – McCarthy Building Companies

Lead Architect
Greg Hadsell – HDR Architecture, Inc.

Architect/Landscape
Greg Hadsell – HDR Architecture, Inc.

Historic Preservation Consultants:
Christine Lazzaretto – Historic Resources Group

Brenda Levin – Levin & Associates Architects

John LoCascio – Historic Resources Group

Lead Engineer (Structural)
Blake Dillsworth – KPFF Consulting Engineers

Civil Engineer
Carianne Statser – HDR Architecture, Inc.

Electrical Engineer
Paul Davila – HDR Architecture, Inc.

Contractor
Andrew Murray – McCarthy Building Companies

Specialty Sub-Contractor(s)
John Montgomery-Brown – EKI Environment & Water, Inc.

Mechanical Engineer
Brian Perlberg – HDR Architecture, Inc.

Waterproofing Consultant
Travis St. Louis – Simpson Gumpertz & Heger

Historic Materials Consultant
Lauren DiCenzo – Simpson Gumpertz & Heger

Façade Engineering Consultant
Felipe Flores – Arup

Lighting Design Consultant
Renee Thomas – Arup

Photography © Sam Burbank

Hangar One Rehabilitation

Hangar One Rehabilitation is a winner for the 2026 Preservation Design Award, receiving the prestigious Trustees’ Award for Excellence in the category of Rehabilitation. Award recipients are selected by a jury of top professionals in the fields of architecture, engineering, planning, and history, as well as renowned architecture critics and journalists. Tickets and sponsorship options are available at californiapreservation.org/programs/awards/.

About Hangar One Rehabilitation

Hangar One was constructed between 1931-33 to house the USS Macon as part of the U.S. Navy’s dirigible program. Hangar One’s design and construction is one of the greatest engineering feats of the twentieth century, and it remains one of the largest clear-span volumes in the U.S. In the 1990s, the base was decommissioned and subsequent testing revealed hazardous materials that eventually required the Hangar to be stripped to its steel skeleton to mitigate contamination.

The project rehabilitated Hangar One, including full abatement of remaining hazardous materials; new cladding, membrane roofing, and windows matching the original dimensions, configuration, and appearance; new electrical, mechanical, and plumbing infrastructure; structural upgrades; passive ventilation system; and insulation. This work allows Hangar One to continue its historic legacy for generations to come.

Read more about the Preservation Design Awards
Wide-angle view of Hangar One under rehabilitation, filled with scaffolding and construction activity; text highlights its Trustees’ Award for Excellence from the California Preservation Foundation.
Large, empty steel frame structure of an airship hangar stands on a flat, grassy area with mountains in the background under a blue sky.
Wide interior view of an empty, open-air hangar with a steel frame structure. Sunlight casts shadows on the concrete floor, where weeds grow through cracks. The vast, arched roof extends to a distant opening.
A large structure covered in scaffolding stands illuminated at night, with a few parked cars in front and a water tower visible to the left under a dark, cloudy sky.
A wide-angle view of a large, modern building under construction, featuring extensive scaffolding, construction equipment, and workers. Bright light streams in through a massive arched window at the far end.
A wide-angle view of a large industrial building under construction, featuring metal beams, multiple windows, red safety barriers, scaffolding, and a clear blue sky in the background.
A large silver hangar dominates the background behind a historic beige building with a clock tower and manicured lawn, surrounded by green trees under a clear blue sky.
Workers operate orange construction lifts to install panels on the metal framework of a large domed structure under a clear blue sky, with the building partially covered and scaffolding visible.
A large, white, curved-roof hangar sits on an airfield under a partly cloudy sky, with mountains and trees in the background.
A large, dome-shaped hangar with glowing windows stands under a night sky, with a checkered red-and-white water tower in the background and empty parking spaces in the foreground.
A modern building with a sharply sloped metal facade, featuring angled, rectangular glass windows. The photo is taken from a low angle on a sunny day, with a clear blue sky overhead.
A large grassy field leads to a historic white building with a flagpole, framed by trees. Behind it stands a massive, curved silver structure under a cloudy sky.
A vast, empty aircraft hangar with a high arched ceiling, illuminated by rows of overhead lights and sunlight streaming through large windows, casting shadows across the floor.
A large airship is moored on a circular tarmac near a hangar at an airfield, with several buildings and open land visible in the background under a partly cloudy sky.
A large arched aircraft hangar with its doors open, revealing the steel framework inside. Several vintage cars and trucks are parked in front, and the image is in black and white.
A large airship is moored inside a spacious hangar with steel framework and windows. Several people stand nearby, highlighting the scale of the airship and vastness of the hangar.
A large group of uniformed naval personnel pose for a photo in front of the massive nose of an airship inside a spacious hangar. The airship towers above them, highlighting its impressive size.
Rows of vintage biplanes are lined up inside a large, open aircraft hangar with a high arched ceiling and abundant natural light streaming through the windows.
A black-and-white photo of a large hangar shows several airships and two airplanes inside. The airships are tethered, and the hangars steel framework and high ceiling are visible above the aircraft and blimps.
A large hangar with a curved roof, partially covered with white panels and partially exposed metal framework, stands on a concrete surface under a clear blue sky.

Community Importance

Hangar One is an iconic landmark that is significant to aviation historians and the local community. Moffett Federal Airfield was originally Naval Air Station (NAS) Sunnyvale, and Hangar One was developed to house the USS Macon and serve as the West Coast operations of the Navy’s LTA dirigible program. In 1930 when this site was selected as the new naval station, nearby schools and banks were closed and a celebratory parade of cars wound through the peninsula. The land was purchased with funds raised by enthusiastic local citizens and civic leaders excited at the prospect of a naval airfield in the area and it was then sold to the Navy for $1. When completed, the enormous scale of Hangar One – approximately 1,100 feet long by 300 feet wide by 200 feet high at its crown – dominated the landscape of the then mostly rural landscape.

Hangar One remained an iconic presence amidst the urbanization of the post-World War II decades. When hazardous materials were identified, the local community expressed overwhelming support for full restoration of the Hangar – eventually forming the Save the Hangar One Committee – and Representative Anna Eshoo was a major proponent of saving Hangar One. As a result, Hangar One continues to exist as a prominent and iconic landmark in Silicon Valley.

About CPF and the Awards

Held in conjunction with CPF’s 2026 Annual Conference in Riverside, the 2026 Mission Inn Preservation Design Awards Ceremony and Reception will spotlight excellence in historic preservation in a setting that reflects the very spirit of the work being honored. This special evening brings together award recipients, conference participants, preservation leaders, and supporters from across California to celebrate outstanding preservation projects and leadership through the Preservation Design Awards and President’s Awards.

Founded in 1978, the California Preservation Foundation (CPF) is California’s statewide nonprofit organization dedicated to the protection of historic places and cultural heritage. Through education, advocacy, and community-centered programs, CPF supports the people, projects, and policies that keep California’s historic resources vital and valued. We now support a national network of more than 36,000 members and supporters. Click here to learn how you can become a member.