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R.P. Lumber opened its 100th retail location in Monmouth, Illinois, on Oct. 12, 2026. The company says the store will expand local access to building materials, hardware, inventory and services; details such as staffing and store performance have not been provided.
R.P. Lumber opened its 100th retail location in Monmouth, Illinois, on Oct. 12, 2026, marking a company milestone and adding a store intended to serve customers in western Illinois. The location occupies a renovated former auto dealership that had been vacant for about two years, according to the company announcement reported by Hardware Retailing.
The new store sits along one of Monmouth’s primary commercial corridors. R.P. Lumber said the redevelopment included a full interior demolition, major building improvements, new fencing and construction of a warehouse. The company did not disclose the project’s cost or the size of the facility in the information provided.
R.P. Lumber said the location will help it serve its existing customer base across western Illinois and provide local access to professional-grade building materials and a broader hardware selection. The announcement did not list specific product categories, services, opening hours or the number of employees at the Monmouth store.
Company CEO Robert Plummer described the project as both a retail investment and the reuse of a vacant property. Donna Plummer, who co-founded the company with Robert, called reaching 100 stores an achievement that had seemed unimaginable when the business began in 1977.
A Milestone With a Local Footprint
The opening combines company expansion with the conversion of a long-vacant commercial property. For Monmouth-area residents and building professionals, the stated benefit is a local source for a broader hardware offering and professional-grade materials; the announcement does not establish how much customers’ choices or prices will change.
The store also brings the company’s retail network to 100 locations, a marker of its growth from a business founded in Staunton, Illinois, in 1977. That scale may help R.P. Lumber serve customers across a wider area, but the company has not supplied figures on sales, customer demand or the new store’s expected economic contribution to Monmouth.
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From Staunton to 100 Stores
R.P. Lumber traces its founding to 1977, when Robert and Donna Plummer started the company in Staunton. The Monmouth opening is the company’s 100th retail location, according to the announcement. The source material does not provide a store-by-store expansion timeline or identify when the company opened its 99th location.
The Monmouth site had been a vacant former auto dealership for approximately two years before redevelopment. R.P. Lumber said the renovation work transformed the property for retail and warehouse use. This local project description is the available account of the site’s history; no independent assessment of the renovation or its community effects was provided.
“We wanted to invest in Monmouth because it’s a great community filled with hardworking people who share many of the same values that have guided our company for nearly five decades.”
— Robert Plummer, CEO of R.P. Lumber
Store Operations and Local Effects
The announcement confirms the opening date and location, but does not specify the store’s staffing, operating hours, investment amount, inventory levels or the range of services available. It also gives no sales forecasts or information on how the new location may affect other R.P. Lumber stores or local competitors.
The company says the store will expand access to materials and hardware, but the scale of that change remains unmeasured. No customer-demand data, pricing information or independent estimate of the site’s economic impact was included in the source report.
Customers Can Visit the New Store
The Monmouth location opened for business on October 12, 2026, so customers can visit the store following its opening. R.P. Lumber has not announced a later launch event, additional construction work or another milestone tied to the opening in the source material.
Further details about store hours, available services and employment may come through company or store communications. For now, the confirmed next step is the store’s operation as part of R.P. Lumber’s 100-location retail network.
Key Questions
Where is R.P. Lumber’s 100th retail location?
It is in Monmouth, Illinois, along one of the city’s primary commercial corridors.
When did the Monmouth store open?
The store opened for business on October 12, 2026.
What was at the site before the store?
The location was a former auto dealership that had been vacant for about two years, according to the company announcement.
What does R.P. Lumber say the store will offer?
The company says the store will provide professional-grade building materials and a broader hardware offering, along with additional inventory and services. It has not published a detailed product or service list in the information provided.
Why is this store a milestone for the company?
The Monmouth location is R.P. Lumber’s 100th retail store. The company was founded in Staunton, Illinois, in 1977 by Robert and Donna Plummer.
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