The firm is said to be the largest interior construction contractor in Texas and the sixth largest general contractor in Houston.
It has offices in Houston, Austin, and Dallas with customers including The City of Houston, Memorial Hermann Healthcare System and Gulf States Toyota.
Balfour Beatty chief executive Ian Tyler said: ""The acquisition of SpawMaxwell provides us with a substantial presence in key Texas markets outside Balfour Beatty Construction's base in Dallas and enables us to provide an expanded range of services for customers. We look forward to SpawMaxwell joining the Balfour Beatty Group and driving our growth across the largest building markets in Texas."
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