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J. Foster Co., Inc.

25 Cross Street, Medfield, MA, 02052




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About J. Foster Co., Inc.

Why Choose Us?

About The Owner


About Us

At J. Foster Co., Inc., we specialize in the installation of brand-name doors, windows and siding.  Since 1985, we have been transforming homes and businesses throughout Greater Boston and the Metro-West area. 

Why Choose Us?

  • John Foster, the founder of J. Foster Co., Inc., personally estimates all jobs. 

  • Each professional installer working on your project is an employee of the J. Foster Co., Inc.  We do not sub-contract your job to another company. 

  • All of our installers have been trained by Harvey Industries and certified by the Vinyl Siding Institute. 

  • We are fully insured and licensed (HIC #101146 and MA Construction Supervisor #054609)

  • The J. Foster Co., Inc., is an Accredited Business Member of the Better Business Bureau since 1987.  Click on the BBB Torch Logo in the left border to view our Reliability Report.

  • Having been in business since 1985, we have extensive experience in the field.

About The Owner

Owner and founder John Foster has been a life long Massachusetts resident.  Upon graduating from Boston College High School, he attended B.C. and is a member of the Class of '81.  Currently, John resides in Medfield, MA, with his wife Sarah and two children, Kristin and Cole.


J. Foster Co., Inc.

25  Cross Street

Medfield,  MA   02052

Toll Free:  800-244-5274

Fax:  508-359-4622