[Dottore]

I will shortly be shopping interior designers to re-do my parents former apartment prior to sale.

I gather most of them work on a cost plus basis; ie, they arrange all the materials and labour and charge a percentage on top of gross for their services.

1. What, typically is that percentage? Is there a range within one negotiates?

2. Anyone work with designers with other fee arrangements?

I would be interested to hear from anyone with experience in this.