₦airaland Forum

I am new here and I really want to thank everyone for what I have read so far on this forum. Please I want to ask about BOQ, we have a duplex and all drawings are ready so I would love to know:
1) How much does it cost
2) How detail does it always fo
3) Some told me 50k and I think it might be too expensive, what do you think
4) I dont have any ideas about it so what should I look out for
5) What differentiate a good BOQ from a bad one
Please I nedd your help