Pennsylvania operates more modular factories than any other state east of the Mississippi, and most of the modular product sold across the Northeast and Mid-Atlantic ships out of central Pennsylvania. That factory density means shorter freight distances, a deeper builder-dealer network, and a modular insignia program the state has run for over forty years. This guide covers the ten manufacturers with the strongest production scale, in-state presence, and track record serving Pennsylvania buyers in 2026.
Evaluation Criteria for Ranking
This ranking is based on the following criteria:
- Factory location and verified Pennsylvania install record
- Production volume and manufacturing capacity where publicly documented
- Compliance path — Pennsylvania state modular insignia or HUD code
- Floor plan variety and customization depth
- Company longevity and regional reputation
- Dealer network strength and statewide accessibility
Top 10 Modular Home Manufacturers in Pennsylvania (2026)
| Manufacturer | Headquarters | Primary Focus |
| Excel Homes | Liverpool, PA | High-volume modular, deep statewide dealer network |
| Ritz-Craft | Mifflinburg, PA | Largest family-owned modular manufacturer in the US |
| Riverview Homes | Western PA | Leading Western PA builder of modular and manufactured homes |
| Professional Building Systems (PBS) | Berwick, PA | 1,000+ units annually, one of the largest on the East Coast |
| Apex Homes | Middleburg, PA | Value-engineered modular, entry-level custom builds |
| Pennwest Homes | Emlenton, PA | Commodore Corporation affiliate, western/central PA volume |
| Kintner Modular Homes | Pennsylvania | Long-established custom modular builder since 1972 |
| Commodore Homes of Pennsylvania | Clarion, PA | Legacy manufacturer with roots dating to 1952 |
| Simplex Homes | Scranton, PA | Nationally recognized, family-owned since 1971 |
| Structural Modulars, Inc. (SMI) | Pennsylvania | Five-station assembly line, custom-fit homes |
1. Excel Homes
Excel Homes, headquartered in Liverpool, is one of the highest-volume modular plants in the Northeast and a default pick for Pennsylvania buyers. Its catalog runs deep across two-story colonials, ranches, and capes, backed by a dense builder-dealer network and a long appraisal track record against stick-built comparables.
Website: https://www.excelhomes.com/
2. Ritz-Craft
Ritz-Craft, based in Mifflinburg with three plants in Pennsylvania, describes itself as the largest family-owned and operated modular home manufacturer in the United States, with over 50 years serving the Northeast, Mid-Atlantic, and Midwest. Its million-square-foot infrastructure supports a deep catalog and a strong custom architectural reputation.
Website: https://www.ritz-craft.com/
3. Riverview Homes
Riverview Homes, Inc. positions itself as the leading builder of modular, manufactured, and mobile homes in Western Pennsylvania, family-owned and operated since 1970. Its in-house expertise spans sales, setup, service, insurance, and financing, giving buyers a single point of contact through the entire process.
Website: https://www.riverviewhomesinc.com/
4. Professional Building Systems (PBS)
Professional Building Systems, founded in 2000, produces over 1,000 living units per year across ranch, cape, and two-story homes, along with apartments, dormitories, schools, and light commercial structures — making it one of the highest-volume modular manufacturers on the East Coast by publicly stated output.
Website: https://www.pbsmodular.com/
5. Apex Homes
Apex Homes in Middleburg is the value-engineered option among Pennsylvania’s modular insignia factories. It runs a real code-built home with a strong catalog and wide dealer coverage, making it a solid fit for replacement homes and entry-level custom builds across central and southern Pennsylvania.
Website: https://www.apexhomes.com/
6. Pennwest Homes
Pennwest Homes, based in Emlenton, is an affiliate of the Commodore Corporation, a homebuilder with roots dating to 1952. Its state-of-the-art facility roughly sixty miles north of Pittsburgh runs a significant share of western Pennsylvania’s modular volume.
Website: https://www.pennwesthomes.com/
7. Kintner Modular Homes
Founded in 1972 by Fred Kintner, Kintner Modular Homes has built a long-standing reputation across Pennsylvania for custom modular construction, spanning Cape Cods, ranches, raised ranches, two-story homes, log cabins, and chalets, alongside site services like wells, septic, and driveway design.
Website: https://kmhi.com/
8. Commodore Homes of Pennsylvania
Commodore Homes of Pennsylvania, based in Clarion, is part of the Commodore Corporation, one of the longest-operating home producers serving the Northeast with roots dating back to 1952. It builds both manufactured and modular homes across a range of sizes, constructed to individual state and local building codes.
Website: https://valleyhomesofpa.com/
9. Simplex Homes
Founded in 1971 and still family-owned, Simplex Homes is a nationally recognized leader in modular construction based in Scranton. Many of its skilled craftsmen have been with the company for decades, and its focus stays firmly on high-quality modular structures for first-time and dream-home buyers alike.
Website: https://www.simplexhomes.com/
10. Structural Modulars, Inc. (SMI)
SMI has been reinventing the modular home process since 1990, building each home along a five-station assembly line with high-quality materials. The company’s dedicated team customizes homes to fit each buyer’s needs, lifestyle, and budget, combining a controlled factory environment with genuine craftsmanship.
Website: https://www.structuralmodulars.com/
GS Modular: Professional Steel Modular Integrated Construction Provider
Beyond Pennsylvania’s dense factory network sits a different category of manufacturing entirely. GS Modular runs one of the industry’s most advanced steel modular operations from a 70,000-square-metre production base in Foshan, China, engineered to deliver Steel Modular Construction at a scale and structural performance few regional factories can match. Every module is built on precision jigs, inspected at each stage of production, and backed by ISO 9001, ISO 14001, and ISO 45001 certification — a track record reflected in completed modular projects across more than 25 international markets.
Conclusion
Pennsylvania’s 2026 modular home market runs on a dense cluster of in-state factories — Excel, Ritz-Craft, PBS, Apex, and Pennwest — supported by long-established regional builders like Riverview, Kintner, Commodore, Simplex, and SMI. Several companies here make their own “largest” claims within different regions or categories, so buyers should confirm current production capacity and local install record directly before committing. Reach out to compare current floor plans, pricing, and factory lead times before starting a build.
FAQ
Who is the largest modular home manufacturer?
No single company holds an independently verified “largest” title nationwide — production volume isn’t publicly reported across the industry. Clayton Homes is the largest builder by overall home sales in the US, though a meaningful share of that volume is HUD manufactured product rather than code-built modular. Among Pennsylvania’s own factories, Ritz-Craft describes itself as the largest family-owned modular manufacturer in the country.
What are the top five mobile home manufacturers?
Clayton Homes, Skyline Champion, Cavco Industries, Champion Homes, and Palm Harbor Homes are generally recognized as the largest manufactured (mobile) home producers in the US by national sales volume — a separate product category from the code-built modular homes covered in this guide.
How much does a prefab home cost in PA?
Prefab is a broad category that includes both modular and HUD manufactured homes. Code-built modular homes in Pennsylvania typically run $150–$250 per square foot delivered and set, while HUD manufactured homes run lower, generally $95–$195 per square foot.
Who makes the best modular home?
There’s no single best manufacturer — it depends on the project. Buyers prioritizing production scale and dealer access tend toward Excel Homes or Professional Building Systems, while those wanting deep customization often look to Ritz-Craft, Kintner Modular Homes, or Simplex Homes.
Who is America’s largest custom home builder?
Clayton Homes, part of Berkshire Hathaway, is generally cited as the largest homebuilder in the US by total unit volume, spanning both HUD manufactured and modular product lines sold through a national retailer network.
