Wem are looking to build a 4500 home in sienna plantation. How is it taxed rate. price or by sq ftWe are looking to build a 4500 sq ft home in sienna plantation. How is it taxed by fort bend. By price or by sq ft. The area is half developed right off Hwy 6. Thanks.September 19 2009 - Sienna Plantation00YesReport a ProblemProblemSelect oneOffensive contentIrrelevant contentSpam (pure self-promotion)OtherDetailsYour emailPlease enter a valid email address.Submit CancelContent flaggedWe will review this content. Thanks for helping make the site more useful to everyone. To learn more, read Zillow's Good Neighbor Policy.We're sorry. This service is temporarily unavailable. Please come back later and try again.