Zillow determines an estimate for a home based on a range of publicly available information, including sales of comparable houses in a neighborhood. Zestimate does not take into consideration home-specific factors like recent remodeling.

Realtor.com
Discover Your Perfect Home with the most complete source of homes for sale & real estate near you.

Real estate agents with specific market knowledge are more likely to know specific factors affecting the purchase of a home such as the overall condition of the home, room flow, landscaping, views, traffic noise, and privacy. Find a local agent here: Home Pros (scroll down to Realtors, Housing, Rentals)