Substructure Inc Claim Listing Return to Directory Rating (average) (0) Business Genre Contractor, Utility Business Website Address substructure.com Business Address, City PO Box 4094, Portsmouth ZIP Code 03802 Business Phone Number 6034361039 Business Fax 6034311039 Ratings There are no reviews yet. Please login to leave a review. Please login to claim this listing. Username*: Email*: Password*: Log in | Lost your password?