City offices and facilities will be closed Friday due to severe weather.
City offices and facilities will be closed Friday due to severe weather.
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Department of Design and Construction

City and County of Honolulu - City and County of Honolulu - State of Hawaii Seal
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Department of Design and Construction

Ka ʻOihana Hakulau a me ke Kāpili

The Department of Design and Construction is the primary agency responsible for the implementation of the City’s Capital Improvement Program (CIP). The Department provides engineering expertise and advice to the City’s program planning, and performs project planning, design, construction, inspection, and land acquisition for public facilities of the City and County of Honolulu.

KEY PROJECTS

FORMS & Documents

DDC Press releases
Bid Opportunities

Directory

DivisionPhone Number
Administration808-768-8480
Mechanical/Electrical Division808-768-8431
Facilities Division808-768-8483
Civil Division808-768-8836
Land Division808-768-8735

DDC Organizational Chart (PDF)

Featured Projects

Queen's Surf seawall repair
Completed $3.6 million in emergency repairs to the Queen’s Surf Seawall, including a structural assessment, geotechnical borings (drilling to evaluate soil and material conditions), structural design, and construction to address a large cavity beneath the promenade and ensure public safety.
Delivering Energy Efficiency
A City-wide Energy Services Performance Contract for the City and County of Honolulu
View Video
Harnessing Solar Power for O‘ahu
Highlights of some of the photovoltaic system projects for the City and County of Honolulu that were managed by the City's Department of Design and Construction.
View Video
Newly Repaired Kalākaua Avenue Bridge
DDC completed a $1.8 million, one-year rehabilitation of Kalākaua Avenue Bridge #285 and the surrounding roadway—repairing cracks and spalls, restoring sidewalks, and filling voids to improve safety and accessibility for the community.
Energy Conservation Solutions
The City and County of Honolulu is advancing a transformative energy-savings initiative focused on smarter energy use, cleaner technologies, and long-term resilience—strengthening sustainability for the community today and for future generations.
Learn More
Photo voltaic systems installed at City facilities
The City has completed the installation of five photovoltaic carport canopy systems at the Neal S. Blaisdell Center, Kapolei Hale, Ala Wai Golf Course, Joint Traffic Management Center, and Kapolei Police Station.
Photo voltaic systems installed at City facilities
Delivering nearly 3.5 megawatts of renewable energy.
Photo voltaic systems installed at City facilities
Together, these solar canopies are expected to produce about 5.5 million kilowatt-hours each year and generate more than $1 million in annual energy cost savings.
Newly stabilized channel slope at Mānoa Stream
Completed a $1.5 million flood-mitigation project along Mānoa Stream behind 2748 Poelua Street, stabilizing the channel slope and strengthening critical drainage infrastructure through outlet structure upgrades and installation of a steel-anchored gabion retaining wall to reduce flood risk and improve long-term system resilience.
Hawai‘i Kai Bridge Repairs
Completed $1.5 million in emergency repairs within nine months on three Hawai‘i Kai bridges — #304 (Hawai‘i Kai Drive), #342 (Keāhole Street) and #352 (Wailuā Street), demolishing and restoring damaged concrete to improve safety, durability, and reliability of these bridges.
Rockslide Mitigation at Koko Drive
Completed $1.1 million in rockslide mitigation at Koko Drive (Site 048-A) in four months; work on this project included slope scaling, grouted anchors, shotcrete, utility relocation, traffic control, and environmental protections to enhance safety and reduce rockslide risk and improve roadway stability.
Neal S. Blaisdell Center walkway improvements
Completed $741,995 in walkway improvements at the Neal S. Blaisdell Center, replacing obsolete bollard lighting with brighter pole-mounted LED fixtures to improve the reliability, appearance, safety, and security of the grounds around the Concert Hall and campus.
Rockslide Mitigation on Pacific Heights Road
Delivered $2.4 million in rock slide mitigation along Pacific Heights Road in four months, enhancing roadside slope stability and safety through vegetation clearing, rock scaling and removal, installation of grouted anchors, and sculpted shotcrete application at five separate sites.
Ala Wai Golf Course Clubhouse roof improvements
Completed $1.17 million in roof and related improvements at Ala Wai Golf Course Clubhouse, including replacement of the asphalt shingle roof, exhaust fans, and downspouts, to upgrade the facility
Rehabilitiation of Streets - Kalākaua Avenue
Completed a $2.9 million, 16-month rehabilitation of Kalākaua Avenue, from ʻOlohana Street to Poni Mō‘i Road, to enhance driver and pedestrian safety and accessibility through pavement resurfacing, curb and sidewalk reconstruction, utility adjustments, pavement striping, traffic control and tree maintenance

Useful links

Map of Oahu

Environmental Review Program

Pearl Harbor Topography Map

Department of Planning and Permitting

Satellite Image Map of Roundtop Drive

Division of Purchasing

map of kuahea street

Municipal Reference Center

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