County, City, Utility Company, and Builder Giving Different Answers?
Nobody is lying to you. They're each answering from their own piece of the process — and none of them is responsible for seeing the whole picture.
This is one of the most disorienting parts of dealing with a lot problem: you call the county, they point you to the city. You call the city, they say it's a county matter. You call the utility company, and they tell you to check with whoever handles permitting. Everyone sounds confident. Nobody agrees.
Each office you're calling has authority over one specific piece — permitting, zoning, service territory, or construction. None of them is positioned to tell you whether your project works as a whole. That's not a communication failure between offices. It's just not any single office's job.
Who Actually Has Authority Over What
Typically has authority over septic/OSSF permitting, floodplain development permits, and unincorporated-area building permits. Generally does not control city zoning or utility service territory decisions.
Has authority over zoning and building code within its limits, and a narrower set of subdivision/platting requirements within its ETJ if the property is there. Generally does not control septic permitting or utility service availability.
Controls whether and how service gets extended to your parcel — an entirely separate decision from zoning or building permits. A utility company generally has no authority over whether your building plans meet code, and a city or county generally has no authority over utility service territory decisions.
Knows construction and, often, the local permitting process from experience — but isn't a government authority on any of the above. A builder's read on "this won't work" reflects their experience, not a binding determination from the county or city.
I am not fully certain this division of authority is identical in every North Texas jurisdiction — some cities and counties have interlocal agreements or shared review processes that change who's actually deciding what. Worth confirming the specific structure for your parcel's jurisdiction rather than assuming this general breakdown applies exactly.
How to Get an Answer That Actually Holds
When It's Worth an Outside, Independent Read
If you've made the calls and you're still getting a picture that doesn't add up, that's usually the point where an independent review — someone who isn't representing any one office's piece of the puzzle — is worth bringing in to assemble what you've been told into one coherent answer.
Questions About Your Lot?
If you're navigating a land purchase in North Texas and want a second set of eyes on what you're walking into, start with a Lot Viability Review or use the Ground Up Guides bundle to evaluate the major risk categories yourself.