Jmark Enterprises is a licensed general contractor serving Riverside and San Bernardino Counties. From new construction and ADUs to electrical, concrete, and full-service property maintenance, we deliver quality craftsmanship you can count on.
Founded by John Plocher, Jmark Enterprises is a fully licensed general contracting company based in Riverside, California. We specialize in general construction, ADU builds, electrical work, concrete, and property management maintenance across Riverside and San Bernardino Counties. Whether you're a homeowner planning a new build, a developer adding ADUs, or a property management company that needs a reliable contractor to handle maintenance requests, Jmark Enterprises delivers professional results on every job.
Complete construction services for residential and commercial projects throughout Riverside and San Bernardino Counties. New builds, remodels, tenant improvements, and more.
Custom Accessory Dwelling Unit design and construction. Garage conversions, detached ADUs, and junior ADUs built to California code. Maximize your property value in the Inland Empire.
Licensed electrical services for residential and commercial properties. Panel upgrades, wiring, EV charger installations, lighting, and full electrical system work across the Inland Empire.
Professional concrete work including driveways, patios, sidewalks, foundations, retaining walls, and decorative concrete. Quality flatwork and structural concrete for Riverside and San Bernardino Counties.
We partner with property management companies across Riverside and San Bernardino Counties to handle all maintenance requests. From routine repairs and turnovers to emergency service calls, Jmark Enterprises is your reliable go-to contractor for keeping properties in top condition. One call handles it all.
Jmark Enterprises is based in Riverside, CA and provides construction and maintenance services throughout Riverside County and San Bernardino County. Our service area includes:
Contact Jmark Enterprises today for a free estimate. We serve homeowners, developers, and property management companies throughout the Inland Empire.