Sienna Municipal Utility District No. 6
District Consultants
Attorney
Allen Boone Humphries Robinson LLP
3200 Southwest Freeway, Suite 2600, Houston, Texas 77027
(713) 860-6400
Auditor
McGrath & Co., PLLC
2950 North Loop West, Suite 810, Houston, Texas 77092
(713) 493-2604
Bookkeeper/Investment Officer
Municipal Accounts & Consulting, L.P.
125 North Granite Street, Prescott, Arizona 86301
(928) 800-5369
Delinquent Tax Attorney
Perdue, Brandon, Fielder, Collins & Mott
1235 North Loop West, Suite 600, Houston, Texas 77008
(713) 862-1860
Engineer
LJA Engineering, Inc.
1904 West Grand Parkway North, Suite 100, Houston, Texas 77077
(713) 380-4420
Financial Advisor
Cedar Creek Municipal Advisors, LLC
5075 Westheimer Road, Suite 118-E, Houston, Texas 77056
(713) 600-7535
Garbage Collector
Best Trash, LLC
2015 Grand River Drive, Richmond, Texas 77406
(281) 313-2378
Insurance Agent
McDonald & Wessendorff Insurance
611-B Morton Street, Richmond, Texas 77469
(281) 633-3200
Landscape Architect
TBG Partners
1333 West Loop South, Suite 1450, Houston, Texas 77027
(713) 439-0027
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, July 21, 2026 at 1:00 PM
Suite 2400, Guadalupe Room
The Board meets the third Tuesday of each month at the offices of Allen Boone Humphries Robinson LLP, 3200 Southwest Freeway, 24th Floor, Guadalupe Room. Meetings generally begin at 1:00 p.m. and are open to the public.
The Board welcomes and encourages District residents to attend.