PH Customz

What is the best way to handle adding more space to your property without losing your mind over municipality rules?

My partner and I are expecting our second child, and our current place in Hilversum is getting a bit cramped. Instead of trying to buy a new house in this crazy real estate market, we are leaning towards building a ground-floor rear extension to expand our living room and kitchen. However, I know the Omgevingsvergunning (building permit) process can be an absolute headache if you don't know what you're doing. I was doing some research on turnkey solutions and found a detailed service offering house extensions for private homeowners in the Netherlands on the website https://cbsrenovation.nl/consumer/house-extension-private-consumers/. I really like that they mention handling the architectural drawings, design, and permit applications all in-house before the construction even starts. Have any of you used a full-service building team like this recently? Did it actually save you time and stress with the local authorities? Any advice on budgeting would be hugely appreciated!