To build a room with an attached bathroom

My name is Devan and i am from Sri lanka. I am 74 yrs old.my wife was paralysed for 3 yrs and she passed away 3 months ago. I tried cure her using all my effort spending a lot of money but unfortunately i was unable to save her life. Now i am left alone living in a rented house. The housemaid who was looking after my wife requested me to come and stay with her family although they are very poor She and her husband are living in a two roomed house. So i need to build a room with an attached bath adjoining their house. And further i would like to build a toilet with a commode for them also, as they are using a scotting pan .They are really honest people and always willing to help me without anything in return. I am unable to upload a photo of my self and the place of my housemaid where i want to build the room, as i do not know how to transfer it to my laptop. ( i always use my laptop to to view the websites,on the internet and not my phone). The housemaid too does not know how to upload a photo. But i can tell her to take photo of my self, the housemaids house , where i propose to build my room , from my phone & and send it thru my watts up no. if someone needs it. My watts up no: is - +94 776808817. Sorry for the inconvenience .