The correct consideration is that older buildings are more likely to deviate from current building codes. Increased cost of demolition or construction coverage responds when a covered loss triggers legal or bylaw requirements that make repair or reconstruction more expensive than simply replacing damaged property as it previously existed. Older buildings may have outdated electrical systems, plumbing, accessibility features, fire separations, structural elements, or materials that no longer meet modern standards. Option B is inaccurate because building codes do not normally require all owners to update every property automatically every 10 years. Option C is also incorrect because the endorsement is usually triggered by insured damage and resulting reconstruction obligations, not by a general requirement to upgrade an unchanged building. Option D overstates the issue; the entire building does not always have to be demolished, though ordinance or bylaw requirements may increase demolition and reconstruction costs. Brokers should recommend this endorsement where older construction, municipal enforcement, heritage features, or code upgrades could materially increase claim costs. References/topics: Property Insurance—Wordings; bylaw coverage, demolition, increased cost of construction, older buildings, code compliance.