Hi
I thought I'd ask here in case someone is kind enough to give some advice.
Our house is detached and has a garage next to it leaving a passage inbetween. There is a 4 inch sewer running underneath that and in the early 1990s, building control passed an extension which kind of builds over it (at first floor) but leaves the concrete passage in place at the existing external ground level.
Fast forward to now and we would like to build an extension which is about 600-700mm from that pipe at the closest point (please see attached drawings that I'd originally prepared to send to Thames Water).
As I understand it, there rules allow such an extension to be built but to get the actual agreement it seems that along with those plans, I would need to give them full "building regulations plans that were submitted to building control".
Now, we are at the feasibility stage and I was hoping I could give them my plans plus pay the £300 fee and get a decision. But if they want the full building regs plans (that don't exist now), presumably I'd first have to get and pay for planning permission (since no point doing anything until that is approved), then pay a structural engineer (at the very least) to get those plans.
So the questions I have are, is it virtually a foregone conclusion that they've give me the buildover because it seems to meet their criteria or would the existing work complicate things? Could I get them to give me an agreement without the full building regs plans on the assumption that my foundation design as is doesn't change?
Plan (Light shade walls is the existing house. Solid walls is the proposed extension at bottom towards left)
https://www.dropbox.com/s/kj22fpuimc1v4oy/site_plan.pdf?dl=0
Pipe section
https://www.dropbox.com/s/yqx5u5m2znuepgw/pipe_section.pdf?dl=0
Thanks in advance as ever for any thoughts on this!
I thought I'd ask here in case someone is kind enough to give some advice.
Our house is detached and has a garage next to it leaving a passage inbetween. There is a 4 inch sewer running underneath that and in the early 1990s, building control passed an extension which kind of builds over it (at first floor) but leaves the concrete passage in place at the existing external ground level.
Fast forward to now and we would like to build an extension which is about 600-700mm from that pipe at the closest point (please see attached drawings that I'd originally prepared to send to Thames Water).
As I understand it, there rules allow such an extension to be built but to get the actual agreement it seems that along with those plans, I would need to give them full "building regulations plans that were submitted to building control".
Now, we are at the feasibility stage and I was hoping I could give them my plans plus pay the £300 fee and get a decision. But if they want the full building regs plans (that don't exist now), presumably I'd first have to get and pay for planning permission (since no point doing anything until that is approved), then pay a structural engineer (at the very least) to get those plans.
So the questions I have are, is it virtually a foregone conclusion that they've give me the buildover because it seems to meet their criteria or would the existing work complicate things? Could I get them to give me an agreement without the full building regs plans on the assumption that my foundation design as is doesn't change?
Plan (Light shade walls is the existing house. Solid walls is the proposed extension at bottom towards left)
https://www.dropbox.com/s/kj22fpuimc1v4oy/site_plan.pdf?dl=0
Pipe section
https://www.dropbox.com/s/yqx5u5m2znuepgw/pipe_section.pdf?dl=0
Thanks in advance as ever for any thoughts on this!