Converting bungalow to two storey with outbuilding

[raz_build]

Hi All,

 

Joined recently but followed quite few post which gave a bit of god understanding on the works. Need a suggestion now for a way forward from here. We are based in west midlands area.

 

We are in the process of converting our 1930 bungalow to two storey and also constructing outbuilding. The initial plan was to do just do 8m rear single storey rear extension under permitted development which was approved. We started and got upto dpm level for it but our right side neighbours applied for two storey extension for their bungalow and we thought it might be better if we both do the works same time. Applied for full planning which is still under review with few questions from planning officer to reduce the length so to avoid over bearing on left side neighbours which is still a bungalow. There is no objection from neighbours but it is just what planning officer is requesting us to do and our architects are modifying the plans accordingly. It will be a bit big extension with over all remodel to the property from existing 8mx10m to 16m x 10m

 

Meanwhile we started the outbuilding work which will be 7.5m x 8m with rooms and entertaining area. The idea being we moving into outbuilding whilst the main building renovation happens but after reading few posts am inclining towards demolish and full rebuild so can reclaim VAT but still have time to think as it will take 3 to 4 weeks for planning to get the approval. We are targeting the shell build cost around 70k for main building and then will carry on kind of DIY with rest of work slowly with a target to finish within 2 years. is it a reasonable budget?

 

What am looking at is now suggestion from you all on the spending we did for outbuilding is reasonable with material and labour cost so can plan whether we can use same builder or look for quotes. As specified the location is midlands. 

 

Appreciate if you guys can suggest after going through the attached sheet and let us know your views.

 

Thanks.

outbuildingcheck.xlsx

[raz_build]

Appreciate for any suggestions with the above. Just roughly looking at 1200£ per sqm cost for outbuilding and shell cost of 500 to 600£ per sqm for mainhouse.

[Zak S]

Pricing seems reasonable. Did you get the plans costed? Someone suggested here estimators online website. They charge £200 and cost up the plans.

 

What is the covered area for the main house. 70k seem quite optimistic for the shell, I think.

[markc]

I think you are way under on your estimated costs unless you will be doing most of the work yourself.

1200/sq is very tight on a full build and smaller builds cost much more per sq/m due to inefficiency of size.

£70k for a shell is low if you are considering decent spec doors and windows

[raz_build]

Thanks Zak and Mark for the responses.

 

Yeah outbuilding shell is finish and looking at full completion around in 3 weeks time. We have used subcontractors to get the work done for outbuilding and most of the cost went in for concrete 1m foundations, 150mm base, fibreglass roof with warm deck(120mm insulation) and EWI(100mm insulation). So by completion time we will be squaring it off at 1200/sqm.

 

Main house still plans are in progress and yes spoke with estimators online and just waiting for our architects to send us final plans so I can send it across to them. As we already did the ground foundation for upto dpm lvel for 8m x 10m extension we might go building the ground floor with cavity wall and the rest in timber frame. Considering the rise in timber prices just working out the quotes.