“… the Lessee will not alter the plan or elevation or architectural design of the said messuage shop dwellinghouse and premises or of the boundary walls or fences or make any additions to the said premises without the previous consent in writing of the Lessor or the Lessor’s Surveyor and that plans showing elevations and sections shall be submitted in duplicate to the Lessor or the Lessor’s Surveyor when applying for any consent and the reasonable fees of such Surveyors shall be paid whether such consent be granted or not.”