This little known and seldom used benefit can help you get back on schedule when unexpected delays have destroyed your construction schedule.
Many building officials will allow an early start to your project prior to approval and building permit issuance when you can convince them you will make sure everything will be completed according to code and you guarantee to change anything that does not meet the requirements of the local codes and ordinances.
This privilege may be granted after you have presented a cooperative and willing attitude in working with the local inspectors and plan reviewers.
Some building departments even have an established ordinance and policies in place that deal with this type of privilege.