Do not contact this company, we signed a contract for the design of the house, previously provided a ready-made project, could not adapt it to our conditions, several architects changed, there were constant mistakes, as a result, four months later they did not provide the completed project. You shouldn't even think about building with them.
They build well and on time. A competent team (site manager, architects, foremen and builders), with good expertise. They build strong houses, with a seismic rating of 9 points.
Good organization, everything is transparent and step-by-step. I plan to build a house following the letter of the law, the guys from the SD help with this, now we are developing a project with one of their architects, everything is normal.