Condo is complex and simple at the same time. the building chart is not your unit chart but the entire building chart. which means you need to find the first tenant move in date ... easier said than done. Since condo already have multiple entrance, just choose the most suited entrance of the year.

your unit chi is determine by the quality of chi that enter your building and subsequently flow into your unit.

just remember that all house have the exact same bad and good chi composition, just different sector, they more you used the sector the more you move the chi, the game is to move more the good chi so it flow through your entire house, avoid moving the bad chi so that those chi stay stagnant.

front door, sleeping room and kitchen is so important since you will always used these room and hence what ever chi there will be move.