1. You can actually use Geomancy.net's Free report:- https://www.geomancy.net/content/personalised-reports/free-feng-shui-reports/house-number-report/about-house-number-report 2. The above is based on Vertical Flying Star Feng Shui for high-rise buildings. It does not look at block numbers. But rather unit numbers e.g. #06-29 or #012-29 etc... 3. Frankly, this is more for brand new developments where there are many new units for selection. Thus one can check eg. #06-69, #07-69, #0