In their interpretation and application, the provisions of this chapter shall be held to be minimum requirements and as not interfering with, abrogating or annulling any easements, covenants or other agreements between parties; provided, however, that where this chapter imposes a greater restriction or limitation upon the use of buildings, premises or lots or upon the height and size of buildings or requires larger yards or other open spaces than are imposed or required by existing provisions of law or ordinances or by easements, covenants or agreements, the provisions of this chapter shall control.[1]