Renovate if you enjoy the exercise or for lifestyle reasons , never renovate with emotion , Its a waste of time .
Pretty much every real estate transaction is on land component value , so dont kid yourself , in rising markets you will make money anyhow .
If you spend for example 100k , to pick up 50 k ..your personal labour must be factored in . Generally its rarely worth it ..
On many occassions it better to demolish ..but comes back to land . No point fiddling on the boundaries ..but most important , Factor labour , remove emotion ..