Fidelis Construction



Mark Fontaine (Owner of Fidelis Construction) has been working and building in Montgomery County since the early 70's. Starting with Residential homes around Lake Conroe and building up to large commercial developments. As the area north of Houston developed into one of the fastest growing areas in the nation we grew with it. In May of 2018 Conroe was named the fastest growing town in America. Feeding off of Houston's growth the area offers all kinds of fine living. Lake Conroe attracts Houston's population every summer with shopping, resorts, museums, dining, and more.

Fidelis has grown into a well respected design-contractor with a great reputation for delivering great service and quality products. Our commercial division specializes in design build site development, RV parks, Subdivisions, metal buildings, office buildouts and more. Our residential side specializes in custom homes, investment homes on the Gulf of Mexico, and high end remodels. No matter what it is, Fidelis can deliver what you would expect from a construction company. Call Mark today to find out what we can do for you.


At Fidelis, we adhere to the highest standard of business ethics and practices. We understand and appreciate the value of sustainable practices, as they are critical to our overall success and creating long-term relationships. Mindful of the impact we have locally, we are committed to incorporating environmental, social, and governance considerations into our business operations on a daily basis.


We're in the business of building relationships, and we understand the importance of extending those efforts beyond our individual property lines. Making a positive impact in the greater communities in which we operate not only helps us make a difference in the lives of others, but also enhances our knowledge of and connection to the people and places we serve.