TPS Thayer Share: Accountants Visit Website Request Info 101 Parklane Blvd., Ste. 201 Sugar Land, TX 77478 281-552-8897 Thayer O'Neal provides traditional CPA services including; audit and tax services, consulting, valuation & litigation support as well as financial reporting. LinkedIn Facebook About Map About Thayer O'Neal Company, LLC is an entrepreneurial, full service CPA firm with an expert team of CPA's, Certified Fraud Examiners, Certified Valuation Analysts and Enrolled Agents. What's Nearby? Distance: 5 10 15 20 25 50 mi.