Huntington Beach Warehouse Restoration
Renovation of an existing warehouse in Huntington Beach, back to its original B/S-1 office/warehouse use. This spec build-out features complex structural work, including 12' poured-in-place concrete truck bay walls and full interior slab regrading — uniquely performed under the existing roof. A showcase of technical expertise and future-ready design.
Full-scale renovation of an existing warehouse in Huntington Beach, returning a previously customized office space back to its original and more versatile office/warehouse(B/S-1 occupancy) layout. With no current tenant, this speculative build-out is designed to attract a wide range of future users in warehousing, logistics, and light industrial sectors.
This project blends thoughtful site improvements and structural upgrades. Two elements stand out for their complexity and technical precision: the 12-foot poured-in-place concrete walls at the truck bays, and the re-grading and re-pouring the interior slab — executed entirely under an existing roof structure.
Poured-In-Place Concrete Walls at Truck Bay
The renovation features 12-foot-tall poured-in-place concrete walls designed to surround new dock doors. These site-cast walls offer durability and are engineered to support heavy vehicle activity while enhancing the building’s logistical flow.
Unlike CMU or precast options, poured-in-place walls require highly coordinated form work, reinforcement, and continuous placement, all performed in tight coordination with adjacent building systems and structural components. Their presence not only improves the functional utility of the loading areas but also creates a cleaner and more integrated architectural finish.
The 300 L.F., 8” thick wall was formed and poured over an existing concrete wall and, in addition to concrete reinforcement, the wall also features (33 ea.) HSS 12x8x3/8 cantilevered steel columns for lateral support.
Interior Slab Regrading Under Existing Roof
One of the most technically demanding elements of this project was the full removal, regrading, and re-pour of the building’s interior concrete floor — all while keeping the roof and perimeter walls in place.
While more challenging this is a rare and complex construction sequence, as grading typically requires full site exposure and unobstructed access. Working within a fully roofed structure required creative solutions, specialized equipment, and close coordination between demolition, earthwork, and concrete crews to ensure consistent elevation and drainage performance across the 224,355 s.f. slab.
This approach allowed us to maintain structural integrity and speed while delivering a brand-new floor system optimized for future tenant use — all without dismantling the existing shell.
Additional Phase Two Scope Highlights
- Reinforcement of key structural supports with newly welded column extensions, addressing insufficient original embedment.
- Installation of 6’ exterior poured-in-place concrete stem walls to support new storefront glazing and metal panel systems.
- Construction of CMU block wall enclosures for trash and HVAC, complete with metal lids and screening.
- New metal siding wrap to blend with existing south elevation for architectural continuity.
- Exterior site upgrades, including re-striped parking stalls, new light poles, wall packs, new storm drain and bio pod (water filtration)systems, new landscaping, and signage.
- New HVAC systems, duct work, and equipment.
- Full tenant improvement office build-out with new restrooms.
- Secured tube steel fence and gate at the northwest corner of the property.
- Removal and replacement of the roofing system (PVC single-ply overlay) and skylights.
Project Background
The warehouse was originally designed and permitted for B/S-1 (Office/Warehouse) occupancy. In 2010, a temporary use agreement allowed Quiksilver/ Boardriders to expand office space under a city covenant. With the space now under new ownership and no active tenant, the building is reverting to its original intended use — with warehouse operations as the primary function and office use incidental.
This permit and build-out reflect that transition, preparing the suite for flexible tenant use without tying it to a specific business at this stage.
With standout features like poured in place concrete walls and in-place slab regrading, this project is a showcase of Oltmans Construction Co.’s expertise in delivering creative, technically challenging solutions.