Williamson County is Tennessee's wealthiest county and carries the highest effective property tax rates of any county where Nashville 55+ communities are located. Effective rates run approximately 0.65–0.75% of market value. On a $700,000 Del Webb Southern Springs home — typical for the community — the annual property tax bill runs approximately $4,550–$5,250.
This is $1,000–$2,000 more per year than Wilson County on a comparable home. Over 20 years without the freeze, the gap widens as Williamson County values — among the fastest-appreciating in Tennessee — drive assessed values higher.
Williamson County's property tax freeze income threshold is $67,460 — the highest in Tennessee and higher than the state maximum of $61,920 that applies to most counties. This exception was granted based on Williamson County's median household income when the program was established. For buyers with combined household income between $63,471 and $67,460, Williamson County is the only Nashville-area county where the freeze is accessible.
Once enrolled, the freeze locks the Williamson County tax bill at base-year — a meaningful protection in a county that has seen double-digit appreciation in some years. A Southern Springs buyer who locks in a $4,800 annual bill today keeps $4,800 in year 15 regardless of what $700,000 Spring Hill homes sell for then.
Williamson County is the premium tier for a reason. Franklin and Spring Hill have been ranked among the best places to live in Tennessee consistently. The school infrastructure, retail base, dining, and overall quality of services are among the best in Middle Tennessee. Buyers who choose Del Webb Southern Springs are not making a mistake choosing Williamson County — they are paying the premium that that location commands, and for buyers who qualify for the freeze, the long-term cost trajectory is manageable.
The buyers for whom Williamson County is wrong are those with income above $67,460 who will not qualify for the freeze, and who are comparing Southern Springs to Del Webb Lake Providence or Del Webb Barton Village in Wilson County at $100,000–$200,000 lower purchase prices. At that point, the combined purchase price premium and property tax premium needs to be justified by what Southern Springs specifically offers — newer construction and the Spring Hill location.
We can run your Southern Springs tax estimate and freeze eligibility before you visit.
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