I think it depends on for what purpose. If this is just for your own knowledge for what size a home will fit, measuring wheel. Google earth also has a measuring tool on it that you can use.
If its something more important like the homes are spaced 24 feet apart and your setbacks are 25 feet ( i.e. precision is of great relevance) , i would get your survey with all the homes and distances between homes ( boundary lines etc) .