548 plumbing companies hold a current Responsible Master Plumber licence at an address in Dallas County. Every figure here comes from the Texas State Board of Plumbing Examiners roster, counted from the exports we archive daily.
590licences registered to a Dallas County address
548of those currently valid
−5net change in licences since August 7, 2026
89records added, edited or removed in that time
Licences over time
Licences on the roster
Current
Licences registered to a Dallas County address, and the subset holding a current licence, August 7, 2026 to August 31, 2026. The gap between the lines is the expired count. The scale is fitted to the range rather than starting at zero.
What changed
89 licence records changed in Dallas County across these exports, August 7, 2026 to August 31, 2026.
2New licences issued
29Licences renewed
0Reinstated to current
0Lapsed from current
48Insurance record updated
8Company name changed
8Dropped from the roster
79Records edited in total
Records added, edited or removed in Dallas County between consecutive exports, August 9, 2026 to August 31, 2026. A column of zero means the roster did not move here that day. The first archive has no column: there is nothing before it to compare against.
Newly licensed in Dallas County
Up to 5 are kept per county, so this is a sample of the newest arrivals rather than all of them.
Counts are licences whose roster address names that city. About half the
roster leaves the city blank, so these add up to less than the county
total above.
How to read these numbers
A licence is counted here when its roster address is in Dallas County.
That is a mailing address, not a service area: plumbing companies work a metro
rather than a county line, so a company one county over may well cover you.
The county is simply the unit the roster records reliably.
Licensees whose address is outside Texas are not counted in any county
on this site. The roster records their home county too, which would otherwise
put places like Los Angeles and Du Page in a list of Texas counties.