Looking for a sanity check from anyone who has bought a 70s house with drainage issues

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hi all need a sanity check please

looking at a 1970s detached bungalow near chester probate so no info from sellers at all vacant for a while building survey was mostly ok for age shallow foundations bit of movement on rear conservatory cracking where it joins house but surveyor said cat 0 to 1 nothing major just monitor but flagged one chamber had mortar and debris in it and told us to get full cctv drain survey

we did it 12 runs all 100mm clay:

1) front gully to main has a broken pipe at 1.26m grade 4 under block paving needs digging up

2) main run mh01 to mh02 under rear patio has 20 percent silt grade 4 plus a couple cracks wasnt jet washed before survey so prob worse

3) then mh03 to mh02 shared run that takes next doors two pipes as well has a fracture at just under 1m grade 3 plus some longitudinal cracks

few displaced joints on other runs as well

con29dw says no public sewers inside boundary but then says all the 2011 transferred ones arent on map and no build over approval on file conservatories are believed pre 2000 so was probably private back then sewerage is dwr cymru even though bill is severn trent

also one gully goes to a soakaway but we are paying surface water charge

is this normal for 50 year old clay or is it a red flag?

Question:

1) what sort of money did you pay for similar front excavation plus jet and recctv plus patch

2) and with the conservatory over what is now a public lateral did you go indemnity or did you get retrospective permission solicitor says dont contact water company if we want indemnity

probate sellers wont do works so would you ask for retention or price drop and how much is reasonable. surveyor said house is still reasonable buy subject to costs but not sure if im overthinking the drain stuff or if this is start of subsidence retaining wall issues

anyone been through similar

thanks

Photo for attention :)
 
What was you quoted by the guys who done the CCTV survey?

Andy
I am still waiting for their response . I am attaching some CCTV drain photos from the report
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hi all need a sanity check please

looking at a 1970s detached bungalow near chester probate so no info from sellers at all vacant for a while building survey was mostly ok for age shallow foundations bit of movement on rear conservatory cracking where it joins house but surveyor said cat 0 to 1 nothing major just monitor but flagged one chamber had mortar and debris in it and told us to get full cctv drain survey

we did it 12 runs all 100mm clay:

1) front gully to main has a broken pipe at 1.26m grade 4 under block paving needs digging up

2) main run mh01 to mh02 under rear patio has 20 percent silt grade 4 plus a couple cracks wasnt jet washed before survey so prob worse

3) then mh03 to mh02 shared run that takes next doors two pipes as well has a fracture at just under 1m grade 3 plus some longitudinal cracks

few displaced joints on other runs as well

con29dw says no public sewers inside boundary but then says all the 2011 transferred ones arent on map and no build over approval on file conservatories are believed pre 2000 so was probably private back then sewerage is dwr cymru even though bill is severn trent

also one gully goes to a soakaway but we are paying surface water charge

is this normal for 50 year old clay or is it a red flag?

Question:

1) what sort of money did you pay for similar front excavation plus jet and recctv plus patch

2) and with the conservatory over what is now a public lateral did you go indemnity or did you get retrospective permission solicitor says dont contact water company if we want indemnity

probate sellers wont do works so would you ask for retention or price drop and how much is reasonable. surveyor said house is still reasonable buy subject to costs but not sure if im overthinking the drain stuff or if this is start of subsidence retaining wall issues

anyone been through similar

thanks

Photo for attention :)
Whilst 1260mm deep is not crazy deep, it is still a good dig down. Sounds like the repairs could be costly, especially if exising paved elements need restoring.
 

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