Mobile Homes and Manufactured Buildings - As introduced, requires the department of transportation to submit a brief written summary to the committee of the house of representatives with jurisdiction over transportation matters and the transportation and safety committee of the senate no later than March 15, 2026, and March 15 of each subsequent year, concerning placards issued to transporters of manufactured homes pursuant to this section, including data on unsafe and erratic driving reported to the department using the telephone number that appears on the placards. - Amends TCA Title 55; Title 62; Title 67 and Title 68.

SB 173 requires Tennessee's Department of Transportation to submit an annual report to specific legislative committees by March 15 each year, starting in 2026. The report must include data on placards issued to manufactured home transporters and details about unsafe or erratic driving incidents reported to the department using the phone number on those placards. This procedural bill directly affects the Department of Transportation and the House and Senate transportation committees by establishing a regular reporting requirement for transparency. It does not change existing laws about manufactured homes but mandates data collection on transporter safety.