IF you are just scouting neighborhoods, Open House is a good way to make a decision on what neighborhoods you want to buy in.
Once you have that in mind, then contact local "Buyer Agents" who work in that area.
But keep in mind that when its time to negotiate I recommend that you get representation.
A realtor is not only here to save you time but also defend your interest.
Call me for more info I work at Coldwell Banker Scarsdale
If you go to an open house and like the house, keep in mind that the listing agent represents the seller and will negotiate on their behalf. Wouldn't you feel more comfortable having an agent on your side? Please keep in mind that you do NOT have to sign an exclusive buyers agreement to have an agent represent you.
If you would like I can recommend an experienced and professional full-time agent for you in the Scarsdale area. Please email me if you would like that recommendation.
Dawn Noak, LSP, RSSP
NYS Licensed Sales Person, Gladstone Group