What to do if the calculations are made incorrectly

What to do if the estimate was calculated incorrectly

What can be done in this situation? For example, to draw up a rough calculation of the price of work, and dump 30-50% for all unaccounted costs.

 You can also hire a qualified estimator, which will build an estimate relatively quickly and will require a decent payment for this work for this work. However, why should we guess on coffee grounds or lay out additional money? After all, now at our disposal a convenient and at the same time the gratuitous platform Defsmeta Free, which every person has the opportunity to use.

This software product is intended for both the performers of the finishing and construction work and their customers. The system has an estimated calculator, so that the estimate for the repair of the apartment is formed in automatic calculation of the volume of work.