Depreciation & Componentisation

We are reviewing our depreciation approach and are interested in how other council calculate depreciation for housing stock.

1.Is depreciation calculated on EUV-SH balance sheet value or some kind of cost basis?

2.How many components do they use?
a.Is the trigger for componentising based upon a value threshold (whether cost or EUV-SH) or a % of total or both?

3.If depreciation is based upon EUV-SH then do they need to make additional MRR provision via transfers to reserves to ensure adequate provision for future years capital investment?

Any responses would be much appreciated.

Thanks in advance