A good estimation of market value for any given property depends on many factors including location, size, layout, ceiling height, light, views, materials, finishes & amenities. It also depends heavily on supply, demand, and . Without seeing the property in person, and researching the market in the immediate surrounding area (to find out how much similar properties have been trading for recently) there is no way to accurately estimate market value.
This type of research is what brokers do for their clients. Their expertise gives their clients the strong negotiating position necessary to get the best possible price. If you'd like to contact me just click on my name above. I'd be glad to help.