High-Quality Building Materials Engineered for Hawaii

Welcome to Landmark Building Supply. We specialize in providing luxury building products at affordable prices for high-value residential homes and commercial projects across Hawaii. With a focus on rust-free aluminum alloys coated specifically for coastal conditions, we offer custom fabrication designed to withstand the island climate without sacrificing modern design.

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Trusted by

Hawaii's Top Builders & Architects

Proud Member of BIA-Hawaii (Building Industry Association of Hawaii)

Locally Certified Commercial

Detailing

Affiliated with NAHB (National Association of Home Builders) / IBS

Quick

Product Navigation

Fences

Staircase/ Railing

Window/ Door

Driveway Gate

: Garage Door

Space Solution

Our Best-Selling

Custom Solutions

Windows & Doors Overview

Elevate your space with our custom aluminum and vinyl windows and doors. Built for Hawaii's climate, our products feature low-e glass, thermal breaks, and insulation. Choose from sliding doors and windows, commercial corner doors, folding doors, casement doors, and entrance doors with custom build and wood finish options. We also offer interior doors (Types Y, X, M, H, and G) and comprehensive window treatments in aluminum, fabric, and natural materials, available with either wired or battery motor systems.

Staircase & Railing Systems Overview

Create unobstructed coastal views with our premium staircase and railing systems. We supply floating staircases with double string and middle string configurations, paired with beautifully crafted step wood options like American red oak, European beech, rubber wood, American cherry, black walnut, and American white oak. Our railing selections include glass railings (available with post, U-channel, spigot, or rectangle/round stand-off pin mounts), rust-resistant aluminum handrails, modern vertical and horizontal rod railings, and SS316 cable railings designed exclusively for indoor use.

Fences & Driveway Gates Overview

Secure your property with our powder-coated aluminum and glass fences, perfect for lanais and pool areas. We offer a variety of fence styles including urban (with customized gaps, heights, and horizontal slats), full privacy, classic, geometric (for above CMU walls), and breeze designs. For security and convenience, pair them with our automated driveway gates, choosing from automatic remote-controlled options in wood-like aluminum, sliding gates, folding gates, and double swing gates equipped with optional remote openers and keypads.

Garage Doors Overview

We supply custom aluminum garage doors to perfectly fit your home's aesthetic. Product lines include standard aluminum, aluminum glass for natural light and energy efficiency, and powder-coated wood grain finishes. Design assistance is included to ensure the perfect match for your property.

Space Solutions Overview

Optimize your interior organization with custom cabinet systems and space solutions ideal for walk-in closets, garages, pantries, home offices, entryways, entertainment rooms, and laundry spaces. Enhance your storage with built-in accessories including jewelry boxes, pull-down racks, folding mirrors, shoe racks, rotating shoe racks, underwear boxes, trouser racks, storage boxes, drawers, and rod hangers.

Commercial Projects

We partner with contractors, architects, investors, and designers to provide locally certified curtain wall detailing for storefronts and restaurants. Our commercial portfolio includes collaborative projects located in Kakaako.

Explore Commercial Services

View Our Recent Custom Projects

Seeing is believing. Explore our latest installations of floating staircases, automated driveway gates, and commercial curtain walls across Oahu, Maui, Kauai, and the Big Island.

Instagram: @landmarkhawaii

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The Landmark Process

Precision Custom Fabrication

As a design-to-construction facilitator, we focus on supply-first solutions with installation as an available option. To ensure you receive materials perfectly tailored to your project's unique architectural requirements, please review our operational model:

Special Orders Only

Every product is custom fabricated for your project; we do not keep any products in stock.

Lead Time

Please allow a 3 to 4 month lead time for all special orders.

Installation & Support

We provide free estimates, installation advisory, project management, and available installation services. Please note that we do not offer repair services for products that were not originally sourced from Landmark.

FAQ

Frequently Asked Questions

Why is aluminum the best choice for Hawaii homes?

Hawaii's coastal climate brings heavy salt spray, humidity, and intense sun. Our high-grade, rust-free aluminum alloys are specifically engineered to withstand these harsh conditions without corroding, making them vastly superior to traditional steel or untreated wood

Do you keep windows, doors, or gates in stock?

No, all of our products are strictly special order. Every property is unique, and we custom fabricate every piece to match your exact architectural specifications and design preferences.

How long does custom fabrication take?

Because we manufacture our products to your precise project specifications, please expect a standard lead time of 3 to 4 months from order to delivery.

Do you offer installation services?

Yes. We act as a design-to-construction facilitator. While we are a supply-first company, we offer installation advisory, project management, and direct installation services for all of our own products. Please note we do not provide repair services for products not purchased through Landmark.

Do you deliver outside of Oahu?

Yes. While we focus heavily on Oahu, we provide materials for commercial and residential projects across the state, including the Big Island, Maui, and Kawai. We also facilitate shipping and delivery to the West Coast.

How do I get an estimate for my project?

We offer free estimates and quotes for all of our custom materials. Simply give us a call at 808-466-9683 or fill out a submission form on our website to discuss your exact needs and measurements.

Areas

Areas We Serve

We provide high-end materials for commercial projects and luxury residential homes (valued over $3M) across the state of Hawaii.

Oahu Focus

Residential neighborhoods in area codes 96816, 96825, 96821, 96744, and 96734.

Neighbor Islands

Serving residential and commercial clients on the Big Island, Maui, and Kawai.

Mainland Delivery

We facilitate shipping and delivery to Hawaii and the West Coast.

Visit Landmark Building Supply in Honolulu

We invite contractors, architects, and homeowners to discuss their custom fabrication needs.

Landmark Building Supply

Phone: 808-466-9683

Email: customerservice@landmarkhi.com