Land prices in the area have risen 30-fold, and the city government has still not officially established the sanctuary due to difficulties over funding purchase of the land.
但和開發腳步相較，保護區設立往往困難重重。為了徹底保護候鳥棲息地，市政府欲把保護區擴大，成立關渡自然公園，關渡地區幾年來地價漲了二、三十倍，市府籌不足經費收購關渡堤防內的土地，自然公園因此一直無法成立。