801 W Grant Hwy is a vacant 19,568-square-foot flex/showroom property on US Route 20 in Marengo, Illinois, offered for lease as a full building or in individual spaces. The main-address area includes a 4,800-SF former automotive showroom/office and adjoining 4,541-SF mechanical/service area. These may be leased separately or together as approximately 9,341 SF. Unit B is the 4,450-SF middle shop; Unit C is the 4,427-SF end shop. A separate 1,350-SF compact flex/support area is also available. The full building is offered at $10.43/SF/year NNN (about $17,008/month base rent). For a single tenant leasing the full building on a 3+ year term, year-one base rent is discounted 10% to about $15,307/month for months 1-12. This incentive does not apply to individual spaces or partial-building combinations. Base rent is quoted on an NNN basis; operating expenses are additional. The 2025 property tax bill payable in 2026 was $18,623.76. That amount is property tax only and is not a complete NNN estimate. Property plans show paved and gravel parking areas and multiple building access points. Parking, exterior storage, entrances, and common-area allocation depend on the premises leased and must be documented in the lease. Automotive sales, vehicle repair, body or paint work, outdoor vehicle storage, signage, and every other proposed use require tenant due diligence and all applicable City of Marengo, State of Illinois, and licensing approvals. Floor-plan dimensions and areas should be independently verified by the tenant. Legacy plan labels A-E identify the five areas, not postal addresses: A = showroom; B = mechanical; C = compact support; D = actual Unit B; E = actual Unit C. Year built is reported as 1962 in the prior LoopNet record and has not been independently verified. For availability, configurations, and tours, contact Mike Munteanu at 202-909-3180.