Sienna Municipal Utility District No. 3
Contact Information
District Contact
Sienna Municipal Utility District No. 3 / Attorney
Allen Boone Humphries Robinson LLP
3200 Southwest Freeway, Suite 2600, Houston, Texas 77027
(713) 860-6400
siennamud3@siennamuds.org
Send Us a Message
Requests for Public Information
Requests for public information must be submitted to the District by one of the approved methods and addresses listed below:
- By mail: Sienna MUD No. 3
c/o Allen Boone Humphries Robinson LLP
3200 Southwest Freeway, Suite 2600, Houston, Texas 77027 - By e-mail: sie003@txdistricts.info
- In person: Same as mailing address.
- By electronic transmission through the District’s website contact form: https://www.siennamuds.org/sienna-municipal-utility-district-no-3/contact-information
Upcoming Meetings
Tuesday, October 20, 2026 at 4:00 PM
Thursday, November 5, 2026 at 3:00 PM
The Board generally meets the first Thursday of each month at 3:00 p.m. at the offices of Sienna Residential Association, Inc., 9600 Scanlan Trace, Missouri City, Texas, 77459. Meetings generally begin at 3:00 p.m. and are open to the public. Additional meetings may be scheduled by the Board, as needed, and regular meetings may occur at alternate times, if necessary. Additional or alternate meeting agendas will be posed as soon as possible.
The Board welcomes and encourages District residents to attend.