What MBP Group does

MBP Group Inc. is a privately held holding company that acquires and operates specialty building products manufacturers serving the U.S. residential new construction and repair/remodel markets. The platform comprises five wholly-owned subsidiaries: HB&G Building Products (Troy, AL; porch columns, porch posts, railing/balustrade, and outdoor living products since 1880), The Marwin Company (Cayce, SC; code-compliant attic stairways and pocket door frames since 1947), Millwork 360 (Tampa, FL; custom moulding, exterior doors, and interior doors), SS Industries (Collegeville, PA; aluminum spiral stairs and premium building materials), and Summit Stairs & Millwork (Canton, GA, with facilities in Atlanta, Charlotte, and Raleigh-Durham; interior stairs, stair components, and exterior columns, acquired July 31, 2023). HB&G is described as the largest U.S. manufacturer of front porch columns and outdoor living products, and SS Industries as the largest spiral stair manufacturer in the country.

The product line spans columns, porch posts, multiple stair categories (curved, production, quick system, spiral, and floating), interior and exterior doors (including impact, fiberglass, French, and louvered variants), pocket door frames, attic stairways, custom moulding, railing/balustrade systems, and pergolas. Notable technical differentiators cited include the Quick System Stair design (engineered to reduce on-site labor), bendable column wraps for siding contractors, and code-compliant attic access solutions. Manufacturing occurs at eight-plus facilities across Alabama, South Carolina, Florida, Pennsylvania, and Georgia, with national shipping capabilities extending to Canada and the Caribbean. SS Industries' customer base alone exceeds 50,000 builders, contractors, and stair customers over a 10-year window.

MBP Group operates as a B2B enterprise field-sales motion, selling direct to large tract home builders, siding companies, professional builders, and contractors, with parallel SMB/homeowner channel access through its subsidiary websites. Pricing is quote-based and negotiated by volume and specification rather than publicly disclosed. Distribution is primarily direct from regional manufacturing facilities, supported by subsidiary-specific marketing sites. The company is backed by Validor Capital, a private equity sponsor, with Preston Bowen as CEO and Alan Rupp as CFO.

Name

MBP Group

Legal name

MBP Group inc.

Website

https://mbpgroup.com

Company type

Private

Operating status

Operating

Headcount range

1–10 employees

Short description

MBP Group is a privately held holding company that owns five specialty building products manufacturers — HB&G, Marwin, Millwork 360, SS Industries, and Summit Stairs & Millwork — selling columns, stairs, doors, millwork, attic stairways, railing, and outdoor living products to U.S. residential builders, contractors, and homeowners via direct field sales.

Ownership category

akta.pro rank

Product category

Residential Building Products Manufacturing

NAICS

Other Building Material Dealers (44418)

SIC

Wholesale-Lumber, Plywood, Millwork & Wood Panels (5031)

akta.pro primary industry

Doors, Windows & Millwork Retail (Interior/Exterior Doors, Windows, Moulding) (CRAIAEAI)

akta.pro secondary industry

Windows, Doors & Millwork Distribution (CRAOAFAI)

Keywords

• Specialty building products
• Residential construction materials
• Porch columns manufacturing
• Stair manufacturing services
• Architectural millwork products

Headquarters

HQ city

Fairfax

HQ country

United States

HQ region

North America

Offices8 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Personnel, Infrastructure, Marketing or Sales, Technology or R&D

Revenue model

1. Building Products Sales: MBP Group generates revenue through the manufacture and sale of specialty building products including columns, porch posts, stairs, doors, millwork, attic stairways, railing systems, and outdoor living products. Revenue is derived from B2B sales to builders and contractors as well as sales to homeowners through distribution channels across their subsidiary companies.

Go-to-market motion1 record

Distribution channels4 records

Marketing channels3 records

Core offering

MBP Group manufactures and sells specialty residential building products, including porch columns, spiral and interior stair systems, attic stairways, custom millwork, interior and exterior doors, railing and balustrade systems, and outdoor living products. The company operates through five wholly-owned subsidiary brands (HB&G Building Products, The Marwin Company, Millwork 360, SS Industries, and Summit Stairs & Millwork) that produce these products in owned manufacturing facilities and sell them directly to residential builders, contractors, siding companies, and homeowners.

Product overview

MBP Group is a holding company for specialty building products consisting of five subsidiary brands: HB&G Building Products (porch columns and outdoor living, founded 1880), The Marwin Company (attic stairways and pocket doors, founded 1947), Millwork 360 (custom moulding and doors in Tampa, FL), SS Industries (spiral stairs, largest U.S. manufacturer), and Summit Stairs & Millwork (interior stairs and millwork, acquired July 2023). The portfolio spans attic stairways, columns, various stair types (curved, production, quick system, spiral, floating), doors (exterior, interior, French, louvered), millwork, outdoor living products, railing systems, and stair parts. Products serve the residential new construction and repair/remodel markets across the United States.

Differentiator

Problem solved

Functional benefit

Products and services

• HB&G Building Products HB&G Building Products manufactures front porch columns and outdoor living products for residential construction, including Permacast fiberglass columns, column caps and bases, PermaWrap PVC column wraps, PermaLite square columns, wood columns, PermaRail Plus railing, porch posts, porch ceiling panels, balustrade systems, and pergolas. Founded in 1880, headquartered in Troy, AL, and ships across the U.S., Canada, and the Caribbean.
• The Marwin Company The Marwin Company manufactures code-compliant attic stairways, pocket door frames, louvered and French doors, and energy-saving attic solutions for residential construction. Founded in 1947 and headquartered in Cayce, SC, with products made in America using highest-quality materials.
• Millwork 360 Millwork 360 provides custom moulding, exterior doors, and interior doors for residential and commercial projects in the Southeastern United States, combining old-world craftsmanship with state-of-the-art manufacturing. Offers MasterGrain Fiberglass Doors, Villacrest Interior Doors, and impact exterior wood doors from its Tampa, Florida facility.
• SS Industries SS Industries is the largest spiral stair manufacturer in the country, providing spiral stairs and premium building materials from Collegeville, PA to homeowners, contractors, and professional stair customers across continental North America. Has been recognized with consecutive spots on the Inc. 5000 list and the Philadelphia Business Journal Soaring 76 Award, with over 50,000 customers served.
• Summit Stairs & Millwork Summit Stairs & Millwork designs and manufactures innovative, high-quality interior stair products, stair components, and exterior columns for residential construction. Products include curved stairs, production stairs, quick system stairs, stair parts, access doors, columns, and millwork accessories, with facilities in Canton GA and metro locations in Atlanta, Charlotte, and Raleigh-Durham.
• Attic Stairways Code-compliant attic stairways manufactured by The Marwin Company, providing safe and efficient access to attic spaces for residential applications.
• Columns Front porch columns including Permacast fiberglass porch columns, column caps and bases, PermaWrap PVC column wraps, and PermaLite square columns manufactured by HB&G Building Products.
• Curved Stairs Custom curved stair products manufactured by Summit Stairs & Millwork for residential construction.
• Custom Moulding Custom architectural moulding products offered by Millwork 360 serving residential and commercial projects in the Southeastern United States.
• Floating Stairs Floating staircases available through MBP Group's product portfolio, featuring modern design with minimalist aesthetics for residential construction.
• Impact Exterior Wood Doors Impact-resistant exterior wood doors manufactured by Millwork 360 for residential applications.
• Interior Doors Interior door products including the Villacrest collection offered by Millwork 360 for residential construction.
• Louvered & French Doors Louvered and French door products manufactured by The Marwin Company for residential applications.
• Mastergrain Fiberglass Doors Mastergrain fiberglass door products offered through Millwork 360, combining durability with wood-like appearance for residential applications.
• Millwork Accessories Millwork accessories including trim, mouldings, and finishing components for residential construction offered through Summit Stairs & Millwork.
• Outdoor Living Outdoor living products including pergolas and accessories offered by HB&G Building Products for residential applications.
• Pocket Door Frames Pocket door frame systems manufactured by The Marwin Company for residential interior door installations.
• Porch Posts Porch post products for front porches and outdoor living spaces offered by HB&G Building Products.
• Production Stairs Production stair products designed for high-volume residential construction by Summit Stairs & Millwork.
• Quick System Stairs Quick System stair products designed to reduce on-site labor and cost for builders, offered by Summit Stairs & Millwork.
• Railing & Balustrade Systems Porch railing and balustrade system products including PermaRail Plus offered by HB&G Building Products for residential applications.
• Spiral Stairs Aluminum spiral stair products from SS Industries, the largest spiral stair manufacturer in the country, serving residential customers across continental North America.
• Stair Parts Stair components and parts including treads, risers, handrails, and balusters offered by Summit Stairs & Millwork for residential construction.

Quantifiable outcome

• Over 100 years of experience producing HB&G columns
• +3 more outcomes

Named customers5 records

Segments4 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Scale indicators6 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• JELD-WEN: One of the world's largest manufacturers of windows, doors, and millwork, serving residential and commercial builders and homeowners. Comparable to MBP because JELD-WEN's interior/exterior doors and millwork portfolio directly overlaps Millwork 360 and Marwin's door lines, though it operates at much larger scale across many geographies.
• Masonite International: Leading global manufacturer of interior and exterior doors for residential construction. Directly comparable to MBP's door offerings through Millwork 360 (Mastergrain fiberglass, interior, exterior, French doors), but at far greater scale and with broader builder relationships.
• Cornerstone Building Brands: Largest North American manufacturer of exterior building products including siding, windows, and metal building solutions. Comparable to MBP as a holding-company-style roll-up of building product brands serving residential and light commercial markets, though Cornerstone's portfolio is significantly broader and deeper than MBP's.
• Boise Cascade: Major US manufacturer and distributor of engineered wood products, lumber, and specialty building products including millwork. Comparable to MBP for the wood-products manufacturing and residential builder customer base, though Boise Cascade is much larger and more diversified across commodity wood products.
• Andersen Corporation: One of the largest US manufacturers of windows and doors serving residential construction and remodel. Comparable to MBP for its millwork/door portfolio and overlap with Marwin's pocket door frames and Millwork 360's interior/exterior door lines, though Andersen is a single-brand incumbent rather than a multi-brand roll-up.

Direct peers

• Builders FirstSource: Largest US supplier of structural and value-added building products to professional home builders, including millwork, doors, windows, and stair components. Most direct comparable to MBP because both serve large tract home builders with manufactured millwork and stair products, though Builders FirstSource is a publicly traded distributor rather than a pure manufacturer.
• US LBM: Leading national distributor of specialty building materials to professional builders and contractors, with a heavy millwork, door, and stair component portfolio. Comparable to MBP because US LBM's specialty building products division serves the same residential construction customer base and overlaps product categories including millwork and interior building components.
• BlueLinx Holdings: US distributor of specialty building products including millwork, moulding, doors, and stair components to dealers, builders, and contractors. Comparable to MBP because both serve residential construction with millwork and door products through a distribution model, though BlueLinx is a pure distributor without MBP's manufacturing depth.

Emerging players

• Trex Company: Leading manufacturer of composite decking, railing, and outdoor living products for residential construction. Comparable to MBP because HB&G's outdoor living category (pergolas, porch posts, railing/balustrade) competes in adjacent outdoor-residential lifestyle categories with the same builder and homeowner customer base.

Regional players

• Louisiana-Pacific: Manufacturer of building products including engineered wood, siding, and specialty structural products serving residential construction. Comparable to MBP as a residential-focused specialty building products manufacturer, though Louisiana-Pacific is more concentrated in commodity engineered wood and siding rather than finished millwork and stair products.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/bjsy

Revenue estimate

Valuation estimate

Number of profiles

Profiles8 records

Subsidiaries5 records

Funding overview

Funding rounds

Investors

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

M&A1 record

Investments

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

Frequently asked questions about MBP Group