.. the question of the possibilities for financing the acquisition costs of the next property (paying separately, depending on the proceeds from the previous property to pay off the loan, etc.) is currently not the primary question at all.
What is important now is first to examine the current property closely to see if it is really that unfortunate. In the meantime, definitely check the surroundings (that is, suitable for your workplace) to see what possibilities there are at all. Maybe everything that has infrastructure etc. fitting for you also seems too noisy, etc.
And then you can make a plan on how to get rid of the old property, create/acquire the new property, and what needs to happen in a possible transitional phase (maybe something has to be built). Because if you are not successful in finding something, maybe another plan is needed, like moving away properly, etc.