Sponcering My Family for a Visit to UK

[jay020]

Hi

i'm planing to Sponcer my parents & my Sister to Uk in Visiting Visa
@ present i'm earning £2000 a month from a mobile company,

is this enough to sponcer them for just 2 1/2 weeks stay in Uk

i live in a 3 bedroom house (i only renting in a single room)
home owner say's he'll give a letter for accomadation, will it be an issue if us both have the same address?

please help me out......!