Hello Nairalander this is my first time of posting on this platform though have been. Nairalander since 2012
I need your opinion on this matter or suggestions which can guide me through in taking this decision
I bought this 3 bedroom duplex with I sitting room since 2019 ,but the upper part is opened which means they didn’t deck the upper part . And we are a family of 5 (3 children) . So I am thinking of covering the upper part (deck it ) and make it a sitting room to create more space for the family . The present design of the interior is a mordern style which allows the upper part to be a total waste of space and I am thinking of turning the space to a parlor probably for the children . I want to know how much it will cost me to deck base on the present cost of building materials and is it advisable to convert the empty space to a sitting room or I should just leave it the way it is .

before you can get help, you will need to show some more information such as plan, picture of the house (if possible), before you get a concrete or near-to-cost estimate. Mind you, prices of materials is increasing like wild fire so anything you need to do, do it quick if you have the resources

You will have to post a picture or a sketch to get proper information in here...