Prior to 2009, the Napa Valley Homeowner's Association was managed by Bill Knapp and Knapp Properties, with all voting rights held by Bill Knapp. In 2009, the control of the HOA was transferred to the owner's in Napa Valley. The current managing documents of the HOA and be found through the following links:
Recorded Plat Maps can be found through the following link:
(This will take you to the Dallas County Geographic Data site. Enter "Napa Valley" in the search box.)