Permits for conditional property uses shall be signed by the mayor and shall stipulate restrictions or conditions which may include a definite time limit, provisions for a front, side or rear yard greater than the minimum requirements of the Zoning Ordinance, suitable landscaping, off-street parking and any other reasonable restrictions, conditions or safeguards that would uphold the spirit and intent of the zoning code and mitigate any adverse effect upon the neighborhood properties by reason of the use extension, construction or operation allowed.