chennai the tamil nadu real estate regulatory authority tnrera has recorded a significant drop in registration of housing projects during the past six months when compared with the first half of 2018 this year has witnessed a dip of about 100 projectsdata available with the real estate portal states that a total of 283 housing projects were registered from january to june in 2018 which has been reduced to 181 during the same period this year most of these projects are centred around chennai and suburbs coimbatore and madurai the tamil nadu real estate regulation and development rules 2017 which came into effect on june 22 2017 mandate the registration of all ongoing housing projects with a minimum of eight units this apart newly laid residential layouts also come under the ambit of the actthe dip in number of projects registered comes in the backdrop of reports that new launches in chennais real estate market have witnessed a drop of more than 50 during the last six months when compared with last year