I need to know the price worth of my house as iam looking to sell it

[Fawad.sg8 (Fawad waheed)]

Aoa, im looking to sell my house but don’t know what price i should demand
The details are as follows

G-9/3
Margalla facing
Size 35x50
Demolish-able
Main road street 127

Please let me know how much price i should demand