Real Estate Attorney Needed in Houston

Hi BP, 

I currently have a residential property that I acquired via seller financing and the loan matures this December. The seller is willing to extend the financing for another six months or so and I'd like to take advantage of this. 

That said, I am looking for a real estate attorney who can update our agreement and all of the required documentation.

Any recommendations? I am in Galveston County. 

I do know that I can go to a title company for this, however, I thought it would be cheaper to go directly to an attorney. 

Thanks in advance!