Yes, if the property is modified so that it has a greater or fewer number of parts designed or altered for separate use than it previously had, where the modification includes the provision or extension of any of the fixed services for heating, hot water, air conditioning or mechanical ventilation. The person carrying out the work shall give the newfor the property to the owner of the building and give to the local authority notice to that effect.
Regardless of whether the property has been modified or not as defined above, if you have improved the energy efficiency of the property we recommend you commission a newprior to letting or selling the property.
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