Dave Jones

use ebay/google. used its very cheap.

heras fencing. cheap as chips

check what nails he is using, second fit nailer are usually brads and have no head which will be no good.

your not getting 56p export. The 2022 FIT rates for an April 2010 - March 2011 FIT is 60.23p Export rate is 4.25p

get a footing/or part of footing inspected by building control. job done.

where ? cant see any on the lintle or cill ?

weep vents ?

still not a VCL. For a warm roof a VCL MUST be used.

stops vapour moving into it ? Its wrong and people shouldn't copy bad practice.

not an airtight layer. Only a proper VCL can provide that. no taping, gluing etc etc

do the shed companies plans show internal block walls ? No ? then they are completely different. Tell them to go sing.

yup

use a wall hung frame with built in bog extraction.

multiple zones at diff temps is bad practice and will lower the efficency.

Assume you saying they are 6" to 8" out, not insurmountable ask your brickies.

Fischer Paykel dishwasher draws are game changing. Cant go back to the old tech once had one. expensive though!

not with a mixergy tank.

rood insulation cant be bodged as you do not want the dreaded black mould. Tiles need to come off, counter battened to give you the correct air flow then breathable membrane and put tiles back. Or just stuff the rockwool back in and plaster over .....

Use a planning consultant, planning is not an area to mess about DIY'ing.

good list, id add. lose the spirit level and use a laser, especially over longer runs. dig the trench using the laser to follow the slope to save on pea gravel. chamfer tool to bevel pipe cuts. silicone spray lube never use 4" ducting, its the work of the devil. when running out of fall you can use 1/pipe diameter as a bare miniumum. you have yet to experience the joy of using 63mm pumped chamber pipe. I wont ruin the surprise....

dont make it out of wood.

maybe worth going down the FENSA route.

screw piles >££> Traditional piling

thermowood

its going to work fine but it wont perform its best, could look at insulated wood fibre board for the reveals as its not so deep, or aerogel insulation but the latter is ££££ It's worth getting as much insulation as you can now as the finished window will lose heat forever after fitted so the more can you mitigate it the better in the long run.