Westside Building Material

What Westside Building Material does

Westside Building Material is a regional building materials distributor founded in 1935 in West Los Angeles, California, and currently headquartered in Anaheim. The company operates ten construction yard locations across California (Anaheim, Chatsworth, Fresno, Hesperia, Lancaster, National City, Oakland, San Diego, Santa Maria) and Nevada (Las Vegas), serving both commercial and residential construction customers. Westside is a subsidiary of GMS (Gypsum Management & Supply, Inc., NYSE: GMS), a national building products distributor founded in 1971 in Atlanta, Georgia that operates hundreds of distribution centers across more than 40 states; Westside retains local autonomy and continued founding-family leadership within this national platform.

The company distributes a comprehensive portfolio of construction products sourced from major manufacturers including CertainTeed, USG, Georgia-Pacific, ClarkDietrich, CEMCO, Johns Manville, Rockwool, Chicago Metallic, Sto Corp, Parex, PABCO, DeWALT, Makita, and Milwaukee. Product categories span drywall, steel studs and tracks, acoustical ceilings, insulation, joint treatment, lumber, fasteners, firestop, FRP panels, safety equipment, hand and power tools, EIFS/stucco systems, access doors, commercial doors, concrete and cement, masonry, industrial supplies, and surface protection. Westside also offers value-added services including custom EIFS tinting using Sto and Parex color systems (available at five yard locations), tool repair services (Anaheim yard), and a full delivery fleet capable of commercial, residential, after-hours, and high-rise jobsite delivery with portable all-terrain forklifts.

The business model is primarily transaction-based hardware sales of construction materials to contractors, with revenue generated through physical yard will-call, jobsite delivery, and increasingly through a Customer Portal e-commerce platform with a companion mobile app on iOS and Android. Pricing is quote-based and not publicly disclosed. The customer base is horizontally diversified across commercial contractors (general and specialty trade), residential builders and remodelers, with notable enterprise engagements including jobsite stocking for large multi-hundred-thousand-square-foot commercial projects. Westside employs 101-250 people and operates without proprietary technology beyond its Customer Portal, relying instead on its physical yard density, manufacturer relationships, and delivery fleet as the foundation of its competitive position.

Name

Westside Building Material

Legal name

Westside Building Material

Website

https://westsidebmc.com

Company type

Private

Founded year

1935

Operating status

Operating

Headcount range

101–250 employees

Short description

Westside Building Material is a regional construction materials distributor operating ten yards across California and Nevada under GMS Inc., selling drywall, steel, insulation, ceilings, EIFS, and tools to commercial and residential contractors via will-call, jobsite delivery, and an online Customer Portal.

Ownership category

akta.pro rank

Product category

Building Materials Distribution

NAICS

Home Centers (444110), Roofing, Siding, and Insulation Material Merchant Wholesalers (42333)

SIC

Retail-Lumber & Other Building Materials Dealers (5211), Wholesale-Lumber, Plywood, Millwork & Wood Panels (5031)

akta.pro primary industry

Drywall, Partitions & Suspended Ceilings (IMAFANAG)

Keywords

• Building materials distribution
• Drywall supply
• Steel studs framing
• Acoustical ceilings
• Construction supplies

Headquarters

HQ city

Anaheim

HQ country

United States

HQ region

North America

Offices10 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Supply Chain, Operations, Personnel, Infrastructure, Marketing or Sales

Revenue model

1. Building Materials Distribution: Westside generates revenue through the sale of construction building materials including drywall, steel studs, acoustical ceilings, insulation, tools, fasteners, lumber, EIFS/stucco products, doors, and related construction supplies. Products are sold through physical yard locations and online via the Customer Portal. Revenue is primarily transaction-based with customers purchasing materials for construction projects.
2. Tool Repair Services: Tool repair services are offered at the Anaheim, CA yard location, providing additional revenue stream for refurbishing and servicing construction tools.
3. Custom Tinting Services: Custom tinting services for EIFS products using Sto and Parex color systems, offered at select yard locations (Fresno, Anaheim, Oakland, San Diego, Santa Maria).

Pricing tiers

Go-to-market motion2 records

Distribution channels4 records

Marketing channels4 records

Core offering

Westside Building Material is a regional building products distributor serving commercial and residential construction customers from yard locations across California and Nevada. The company supplies drywall, steel studs, insulation, acoustical ceilings, lumber, EIFS/stucco, doors, fasteners, and related construction tools, complemented by value-added services including custom paint tinting, tool repair, and job-site delivery.

Product overview

Westside Building Material is a building materials distributor offering a comprehensive product portfolio across construction categories. The company provides drywall, steel studs and tracks, acoustical ceilings, insulation, joint treatment, lumber, fasteners, firestop products, FRP panels, safety equipment, tools, EIFS and stucco, access doors, doors, concrete and cement, masonry, industrial supplies, surface protection, and air/moisture barriers. Services include custom tinting for EIFS products, tool repair, and commercial/residential delivery. The company operates a Customer Portal e-commerce platform and mobile app for online ordering and account management. Products are sourced from major manufacturers including CertainTeed, USG, ClarkDietrich, CEMCO, Chicago Metallic, Johns Manville, Sto Corp, Parex, DeWALT, Makita, and Milwaukee, among many others.

Differentiator

Problem solved

Functional benefit

Products and services

• Drywall and Gypsum Products Distribution of gypsum wallboard, joint compound, and related drywall accessories for commercial and residential construction contractors.
• Steel Studs and Framing Light-gauge steel framing products supplied to commercial framing contractors and drywall installers.
• Acoustical Ceiling Systems
• Insulation Products Fiberglass, mineral wool, and rigid insulation products for residential and commercial building envelopes.
• Lumber and Wood Products Dimensional lumber, plywood, and engineered wood products for general contractors and framing crews.
• EIFS and Stucco Systems Exterior Insulation and Finish Systems (EIFS), stucco, plaster, and related exterior cladding materials for commercial and residential exteriors.
• Doors and Door Hardware Interior and exterior doors, frames, and hardware packages supplied to contractors and developers.
• Tools, Fasteners, and Accessories Construction hand tools, power tool accessories, screws, fasteners, and consumable supplies for tradesmen on the jobsite.
• Custom Paint Tinting In-store custom color tinting service for paints and coatings to contractor specifications.
• Tool Repair Service Repair and maintenance service for construction power tools and equipment purchased through the yards.
• Jobsite Delivery Service Direct delivery of building materials to commercial and residential construction jobsites across the service region.
• Customer Portal and Mobile App Online ordering platform and mobile application that allow contractor accounts to place orders, check pricing and inventory, and schedule delivery or pickup.

Named customers7 records

Segments2 records

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

Twelve partnerships are on record, tiered core and strategic.

• GMS (Gypsum Management & Supply)coreOthersGMS is the parent company of Westside Building Material. GMS operates hundreds of distribution centers nationwide across 40+ states. Westside is part of the GMS network providing local subsidiary partners with national scale and integrated platform while maintaining local expertise and community relationships. GMS was founded in 1971 in Atlanta, Georgia.
• ClarkDietrichcoreChannel Partner/ Reseller/ DistributorSteel framing manufacturer partner. Westside stocks and distributes ClarkDietrich steel studs, track systems, and steel accessories as part of their metal framing product line.
• CEMCOcoreChannel Partner/ Reseller/ DistributorSteel framing manufacturer partner. Westside stocks and distributes CEMCO steel framing products as part of their metal framing product line.
• Johns ManvillecoreChannel Partner/ Reseller/ DistributorInsulation manufacturer partner. Westside distributes Johns Manville insulation products including batt/roll insulation, rigid foam board, and related insulation solutions.
• CertainTeedcoreChannel Partner/ Reseller/ DistributorMajor building materials manufacturer partner. Westside distributes CertainTeed products across multiple categories including insulation, drywall, acoustical ceilings, and EIFS/stucco. CertainTeed is a Saint-Gobain company.
• Sto CorpstrategicStrategic or Co-development PartnerEIFS tinting partner. Westside offers custom tinting services using the StoColor System at their Fresno, CA location, providing nearly 1,000 colors for facades and extensive color options for EIFS applications.
• ParexstrategicStrategic or Co-development PartnerEIFS tinting partner. Westside offers custom tinting services using Parex custom colors at their Anaheim, Oakland, San Diego, and Santa Maria locations, providing extensive standard colors, textures, and specialty finishes.
• Georgia-PacificcoreChannel Partner/ Reseller/ DistributorDrywall and building materials manufacturer. Westside distributes Georgia-Pacific gypsum and cement board products.
• PABCOcoreChannel Partner/ Reseller/ DistributorDrywall manufacturer. Westside distributes PABCO gypsum products including specialty wallboard.
• RockwoolcoreChannel Partner/ Reseller/ DistributorMineral wool insulation manufacturer. Westside distributes Rockwool insulation products for commercial and residential applications.
• Chicago MetalliccoreChannel Partner/ Reseller/ DistributorAcoustical ceiling manufacturer. Westside distributes Chicago Metallic acoustical grid and tile products.
• USGcoreChannel Partner/ Reseller/ DistributorDrywall and ceiling manufacturer. Westside distributes USG wallboard, joint treatment, and Donn brand acoustical ceiling products.

Scale indicators4 records

Recent moves6 records

Expansion highlights4 records

Direct peers

• Foundation Building Materials: National specialty distributor of building products including drywall, steel framing, insulation, ceilings, and EIFS/stucco systems serving pro contractors — closest direct comparable to Westside's product mix and customer base.
• L&W Supply: Sister subsidiary of GMS distributing drywall, steel, acoustical ceilings and insulation to contractors; same parent network, same product categories, same contractor GTM — the most directly comparable operating peer.
• SPEC Building Materials: Specialty building materials distributor carrying drywall, acoustical, EIFS, insulation, and steel products to commercial and residential contractors — directly overlapping product portfolio and customer segments with Westside.

Broad incumbents

• BMC Stock Holdings: Large national pro dealer of building materials, components, and services (now part of Builders FirstSource) serving builders and contractors with comparable product mix at much greater scale.
• ABC Supply Co. Nation's largest wholesale distributor of roofing, siding, windows, and building products serving professional contractors; broader portfolio than Westside but overlapping customer base and West Coast coverage.
• White Cap (formerly HD Supply Construction): National distributor of construction supplies including concrete, drywall, EIFS, ceilings, fasteners, and tools serving pro contractors with comparable product breadth and a much larger branch footprint.
• SRS Distribution: National building products distributor focused on roofing, siding, insulation, and complementary categories with strong West Coast presence — overlaps with Westside's exterior envelope categories.
• Home Depot Pro / Home Depot: Mass retailer with an aggressive pro-contractor program selling drywall, lumber, insulation, concrete, doors, and tools to small and mid-market contractors competing directly for transactional volume that Westside also serves.
• Lowe's Pro / Lowe's: Major pro-focused retail channel for lumber, drywall, insulation, ceilings and tools; competitive overlap at the small-contractor/DIY segment of Westside's customer base.

Others

• Ferguson Enterprises: Large pro distributor of plumbing, HVAC, and specialty building products; adjacent distribution model and pro-contractor customer base though focused on different categories (plumbing/mechanical rather than envelope/interior).

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

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Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Westside Building Material