John Porth has been with the Thomas Duke Company since 2005. Working primarily in Livingston County, Southern Genesee and Western Oakland counties, he began his career in the building & construction industry. John decided to obtain his real estate license in order to further assist builders and developers secure land for both commercial and residential development. As his role at Thomas Duke Company expanded, he began to specialize in marketing properties on behalf of both Sellers and Landlords to Investors, Users, and Tenants. Along with land for development, his extensive portfolio includes office, retail, and industrial properties.
John is a graduate of Central Michigan University and a United States Army veteran. He has been an active member of his community when not in the office, involved extensively in coaching and volunteer work. He prides himself on his positive attitude, experience in his market, and work ethic.
Grand & Main is downtown Brighton's premier mixed-use development. Four stories featuring retail, office, residential, and concealed on-site parking — located at the gateway to downtown Brighton one of Livingston County's most vibrant walkable districts. A rare opportunity to lease Class A space in a brand-new mixed-use building at one of Brighton's most prominent intersections. The building delivers 1st floor retail, 2nd floor office, and 3rd & 4th floor residential — purpose-built for modern tenants who demand both quality and location. Modern construction, downtown walkability, and immediate access to Brighton's thriving amenity base make Grand & Main unlike anything else available in the market today.
Multi Tenant Office/Retail Building
Modern office suite with great accessibility.
A 2,032 Square Foot, Free-Standing, Two Story Commercial Building in Brighton.
The Howell Health Hub is Livingston County's premier multi tenant medical office opportunity- recently renovated with each element of the building specifically chosen for the benefit of future medical office tenants. The building features 36,000 square foot floor-plates, which allow for flexibility in sizes ranging from 2,400 square feet to full floor users.
An exceptional development opportunity on Howell's south side next to the I-96 interchange. The site offers approximately 3 buildable acres with the remaining land providing natural buffers and open space, ideal for a thoughtfully planned multi-family and commercial development. Prime location combines convenient highway access with close proximity to shopping, dining, and local amenities.
0.84 Acres of Commercial land with great accessibility and access to downtown Howell an the Motorsports Gateway Race Track.
Industrial Property located in the City of Brighton
Industrial Property located in the City of Brighton
Office/Retail Building in downtown Brighton.
Wonderfully maintained, stand alone office building with US Highway 23 frontage in Brighton, MI.
Downtown Brighton location. Outstanding visibility on Grand River in the heart of downtown shopping district.
Downtown Brighton location. Outstanding visibility on Grand River in the heart of downtown shopping district.
Two story Med-Spa building located in Downtown Fenton.
4.17 acres ready for development on Grand River Ave in Howell, MI.
Residential Land for Development.
Multi-Tenant Office Building.
28,950 SF of mixed Industrial and Office Space on 9.77 Acre Lot
(5) Vacant Parcels for Development with frontage on I-96 and Chilson Road in Genoa Twp.
Office or Retail space located on the north side of Grand River, one block West of Michigan Avenue in award winning Downtown Howell.
Retail/Office property
This 1.75 Acre site offers significant upfront cost savings and streamlined readiness for construction. Ideal for Commercial, Office, of Mixed-Use Development.
Current Landscape Yard with Outside Storage.
Multi-Tenant, Mixed-Use Building.
Free-Standing Office Building.
Industrial Warehouse with 5 Acres of Fenced Outdoor Storage.
Multi-Tenant Office Building for Lease
Freestanding Retail Building.
Retail Strip Center with space for lease.
Vacant Land for Development.
Two Unit Office Building with space available for lease.
Vacant Land for Development
Industrial Vacant Land. Foundation for 65,000 SF has been poured, and property has been balanced.
Commercial land for development located on M-36, just west of US-23.
Residential Vacant Land. Outstanding development opportunity with utilities nearby.
Multi Tenant building housing retail, medical, and general office space.
Shovel Ready: Heritage Square Planned Unit Development in Howell, Michigan.
Shovel Ready: Heritage Square Planned Unit Development in Howell, Michigan.
17.39 Acres zoned RM - Residential Multifamily - allows for 6-12 unit acres.
Vacant Land for Development
Commercial Vacant Land for development.
Multi-Tenant General Office Building
Residential Vacant Land. Outstanding development opportunity with utilities nearby.
Multi Tenant Office/Retail Building
Seven (7) commercial outlots for development ranging from 1.24 Acres to 3.95 Acres.
Final component to an almost fully developed/occupied PUD. Various options for development/design standards. All utilities available off site.
Various development options included in the General Business District (GBD) - uses included in brochure.
3,018 SF building with 2.6 acres and a private pond
Office Building
A Site Plan Approved Single Family Residential Development
3 Building Office Center
A multi-tenant retail center consisting of four buildings.
Site Plan approved for 18,000 sf
Built-to-Suit for lease opportunity.
Medical or General Office use.
