Can own share of the house be demolished of combined property

I am a muslim. I have a house in the name of myself & my brother. It’s a 2 storeyed building. Now we have mutually decided to divide it & one part of the building has been given to me & the other half to my brother. Now i want to demolish my share of building & construct a new one since its very old. But my brother is objecting to it & has stopped me from demolishing. He says since it has common foundation, I cannot demolish & build my share of the building. He is doing so to harass me. Kindly advise if he can stop me from demolishing my share of the building & if yes why?