Green building introduces several insurance considerations beyond conventional construction. Novel materials and systems may have limited performance history, making long-term defect risk harder to assess. Green roof and living wall systems introduce water management risks in locations where building envelopes are traditionally impermeable. Solar panel installations on commercial rooftops create fire and wind uplift exposure. Mass timber structures, while fire-resistant by design, face insurer skepticism and may encounter higher builders risk rates. LEED certification costs can be lost if a covered event damages sustainable features that cannot be replicated within project timelines. Energy performance guarantees create contractual liability if buildings do not achieve specified performance metrics.

Mass timber construction using CLT, glulam, and other engineered wood products is growing rapidly, particularly in the Pacific Northwest and British Columbia. Tall wood building codes now permit mass timber structures up to 18 stories in many jurisdictions. Insurers are still developing their approach to mass timber, with builders risk pricing varying significantly by carrier. Key underwriting factors include the fire protection strategy (encapsulation versus exposed timber), sprinkler systems, construction-phase fire prevention plans, and the building height and occupancy. Some insurers offer competitive mass timber pricing reflecting the material inherent fire resistance, while others apply wood-frame surcharges. ALKEME works with carriers that understand mass timber performance characteristics and provide appropriately priced coverage.

Sustainable construction frequently involves environmental compliance obligations that create insurance exposure. Stormwater management systems, wetland mitigation, habitat preservation, and brownfield remediation all carry regulatory liability. Environmental site assessments may identify contamination requiring remediation before construction can proceed. Construction activities themselves can create environmental liability through sediment discharge, chemical spills, or disturbance of contaminated materials. Pollution liability insurance protects against both known and unknown environmental conditions encountered during construction. ALKEME recommends pollution liability for all contractors involved in sustainable development, particularly those working on brownfield sites, near waterways, or in environmentally sensitive areas.