Maddox Construction, Inc. is a commercial utility contractor that has installed underground fire protection in the DFW Metroplex and around Texas since 1989.  We have worked successfully with many city inspectors and fire marshals and have a long list of satisfied owners and general contractors.

Our Services

  • Installation of underground fire protection lines (from the existing city main to 1' above finished floor)

  • Permits pulled if necessary

  • Installation of detector checks in concrete vaults

  • Installation of concrete meter vaults

  • Installation of fire hydrants

  • Site clean-up

  • Water quality tests

  • Hydrostatic testing

Licensing, Bonding and Insurance

We are licensed by the Texas State Fire Marshal's Office. We have both SCR and RME licenses. We are fully insured, including general liability, auto, and worker's compensation.  We also can bond jobs if required.

Let us install all your Underground Utilities

Need water, sewer, or storm drain lines installed? We can bid your whole underground utility package.


Maddox fixed