We several cell towers on Staten Island (Todt Hill, highest point in New York City and along the shore line of eastcoast). There is no apparent negative impact on values. Newest tower is disguised as "Lighthouse", other towers are standard types. Initially, there is an uproar from local community (immediate area of tower), but after awhile, nobody notices them. The one disguised as Lighthouse is located in highest value area of all (+-$500,000 to $3.5 million dollar homes) - rich people always live on hills, and they have learned to live with cell towers.