A developer, Smith Homes, got retrospective planning permission from Havering Council for two extra flats at Romford's Verve Apartments in Mercury Gardens.
The number of parking spaces and leisure facilities were among the queries raised at a committee meeting reviewing a pre-application for 860 Romford homes.
Plans submitted by Harris Academy Rainham for a new sixth form, which attracted traffic concerns, have been given the green light by Havering councillors.