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American General Investors LLC

(203) 758-5180

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Welcome to AGI

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 American General Investors LLC, which was organized in 1965, specializes in the development, construction, and management of commercial and residential real estate. We are a family owned and operated business. Some of our principals are third generation family members involved in the real estate industry. 

Meet The Team

Nick Guastaferri, Mike Guastaferri, Mark Guastaferri, Paula Mirabelle

Check out our team's pictures and bios!

Find out more

What We Do

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 American General Investors acquires real estate, guides it through the local and state land use agencies to increase it's potential to the maximum, constructs a building or buildings, and finally, manages the development for an extended period of time. We currently manage a substantial amount of commercial and residential real estate in the Prospect, Connecticut area and the Waterbury, Connecticut area.  

Our Business

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 We have developed, constructed, and managed a variety of complexes from the simplicity of a single family home to residential condominiums, retail plazas, office buildings, and specialty buildings such as a 150 bed skilled nursing facility and a 9,000 square foot fitness center. 

Commercial Real Estate

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Check out our current commercial real estate holdings.

Find out more

Residential Real Estate

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Check out our current residential real estate holdings.

Find out more

Featured Current Availability

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Heritage Professional & Business Center

60 Waterbury Road (Route 69), Prospect


1,000 square foot, ground floor suite - $1,400 per month

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CrossPointe North Building

50 Waterbury Road (Route 69), Prospect


1,200 square foot, ground floor, end suite . Additional side entrance/exit with room for an outdoor patio.

Retail/Office/Restaurant - $1,700 per month

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4.83 Acres on Route 69 Prospect - For Sale or Lease

  • 4.83 acres on Route 69 in Prospect.
  • Approx 412 feet of frontage on Route 69
  • Approx 335 feet of frontage on Knapp Drive
  • High traffic counts
  • Business Zoned
  • No enviormental issues

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Stonewood Business Center

40 Union City Road (Route 68), Prospect


A 600 square foot second floor suite - $625 per month 

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Prospect Shopping Center

34 Waterbury Road (Route 69), Prospect


A 1,070 square foot ground floor suite - $900 per month

Contact US

American General Investors, LLC

50 Waterbury Road, Suite G, Prospect, Connecticut 06712

Mailing Address: PO Box 7055, Prospect, CT, 06712 Phone: (203) 758-5180 Fax: (203) 758-0858

Office Hours

Monday - Friday: 9am - 4:30pm

Saturday: Closed

Sunday: Closed

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