Sienna Municipal Utility District No. 3
Consultants
Attorney
Allen Boone Humphries Robinson LLP
3200 Southwest Freeway, Suite 2600, Houston, Texas 77027
(713) 860-6497
Auditor
McGrath & Co., PLLC
2950 North Loop West, Suite 810, Houston, Texas 77092
(713) 493-2615
Bookkeeper / Investment Officer
McLennan & Associates, L.P.
1717 St. James Place, Suite 500, Box 45, Houston, Texas 77056
(281) 920-4000
Collections Attorney
Mitchell & Duff, LLC
210 Main Street, Richmond, Texas 77469
(281) 341-1718
Delinquent Tax Attorney
Perdue, Brandon, Fielder, Collins & Mott, LLP
1235 North Loop West, Suite 600, Houston, Texas 77008
(713) 862-1860
Engineer
LJA Engineering, Inc.
1904 West Grand Parkway North, Suite 100, Katy, Texas 77449
(713) 953-5200
Financial Advisor
Cedar Creek Municipal Advisors, LLC
4801 Woodway Drive, Suite 118-E, Houston, Texas 77056
(713) 600-7533
Garbage Collector
Best Trash, LLC
19430 FM 1093 Road, Richmond, Texas 77407
(281) 313-2378
Insurance Agent
McDonald & Wessendorff Insurance
611-B Morton Street, Richmond, Texas 77469-3083
(281) 633–3200
MS4- Storm Water Pollutant Consultant
Storm Water Solutions, LP
16110 Hollister Street, Houston, Texas 77066
(281) 587-5951
Operator
Si Environmental, LLC
6420 Reading Road, Rosenberg, Texas 77471
(832) 490-1600
Tax Assessor / Collector
Tax Tech, Inc.
12841 Capricorn Street, Stafford, Texas 77477
(281) 499-1223
Website
Off Cinco
23501 Cinco Ranch Boulevard, Suite H120-177, Katy, Texas 77494
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.