The Smallest Detail Must Have Meaning, Serve a Purpose and Be Beautiful

MainStreet 407 Design is a full-service architectural, engineering, interior design and construction management firm serving residential and commercial projects. The principals at MainStreet 407 Design have worked on major projects throughout the Continental United States and parts of Canada.

MainStreet 407 Design is a wholly-owned subsidiary of 407 Associates, LLC, which provides through three other subsidiaries residential, commercial and industrial construction services.  The family of 407 Associates companies allows for the sharing of design and construction professionals for projects which require a wide range of services, and offers greater material and subcontractor buying power, with cost savings passed on to our customers.


MainStreet 407 Design is an experienced firm of licensed professional architects, engineers, interior designers and construction managers.

Residential Clients

MainStreet 407 Design will design the ideal home for you, one that will satisfy your wish list of features and amenities. By working with our design team from the outset of the project, we can ensure that your home will be designed and built the way you want, on time and within budget.


Commercial Clients

Our MainStreet 407 Design professionals have a vast amount of experience on many different types of projects such as faith-based projects, retail properties, bars and restaurants and embassies, plus many more. We bring a collaborative effort to meld the common knowledge base in order to design the most attractive, cost effective and functional buildings possible.