You only pay according to progress and for the payments made so far we have received all services
But you are aware that payment schedules are a matter of agreement. And the planning is usually not worth 15%, especially not yet complete.
Defects? We don’t even have a single stone standing yet and everything else like floor plans, selection of materials, etc. is finished and accepted.
In many construction contracts, it is agreed that the client may withhold a retention security for the duration of the warranty period (usually 5% of the invoice amount).
And these 5% are normally "retained" from the beginning. By the way, planning can also contain defects.
Is the architect/planner actually part of the insolvent company, or is it outsourced?
Or do you only have one contract?
In other words, it's nice that you have a
builder. But who "directs" this person and handles the tendering of other various trades, construction coordination and construction supervision? Perhaps still the insolvent company?
I would, as already advised several times, seek
specialist legal advice.