Building Society's offering follow-on deals?

se2020

Has anyone got any experience of building societies offering follow-on deals once the initial term has expired?

I'm currently looking at a property that is not mortgage by the normal highstreet lenders.
Various building societies seem to provide specialist lending against the property. 

The initial 2 or 3yr terms are fairly competitive but the follow-on svr is horrendous. 
Presuming the property is not going to be acceptable to a mainstream lender in 2/3yrs either and can see my self getting trapped into massive monthly repayments. 

Do building societies normally offer a follow on deal at much lower than the svr?

ACG

The SVR for all lenders is horrendous.
We do a lot with building societies as we do a lot of adverse. Most will offer you something better than SVR without having to re-apply.