In interpreting and applying the provisions of this chapter, they shall be held to be the minimum requirements for the promotion of the public safety, health, convenience, comfort, prosperity, or general welfare. It is not intended by this chapter to interfere with, or abrogate or annul, any easement, covenants, or other agreement between parties; provided, however, that where this chapter, imposes a greater restriction or higher standard upon the use of buildings or premises or upon height of buildings, or requires larger open spaces than are imposed or required by other resolutions, ordinances, rules, regulations, or by easements, covenants, or agreements, the provisions of this chapter shall govern. If, because of error or omission in the Official Zoning Map, any property in the jurisdiction of this chapter is not shown as being in a zoning district, the classification of such property shall be classified SR Suburban Residential, until changed by map amendment.