Most of the building residential projects relies on the delivery of apartments with a free layout, which implies the following: a person gets a space that fenced with carrying walls with windows and doors. The only thing that works here is heating batteries. Such projects imply that the rest of the work is solved by itself the owner will be performed for a fee.
Most developers build so-called semi-finished products that are considered the most sustainable product in the real estate market. Such houses they call not apartments, but free planning houses. The developer considers such projects extremely unique, if only for the reason that they allow you to combine a huge number of apartments, embodying any design desires and ideas.
The developer also believes that by building such apartments, they satisfy the desires of a larger number of potential buyers. Of course, some construction companies may accept redevelopment directly at the construction stage. And in order to order it, the buyer needs to contact the developer himself, paying for additional services.
Although it is worth noting that not all the offers that the customer provides you can be implemented during redevelopment, even for a lot of money. If such a redevelopment option affects at least somehow load-bearing walls or other building structures, then the company will refuse you.