I am a civil Engineer, based in berger, Lagos. You can build a 3bedrooms up to roofing stage if you have a simple and elegant house design. No excessive facial concrete with a flat roof design like the one I attached at 2.2m. I just did a quote for a client which is 2.4m. We can chat if you are interested in the building. 0-8-0-5-8-5-2-5-2-4-1 The design includes 1. 3 bedrooms all ensuit 2. A visitor toilet 3. A living room, 4. A kitchen 5. A dinning 5. A laundry.