{"id":"lighting-exterior-led","version":"0.2.0","classification":{"uniformat":"D5020"},"names":["Exterior and site lighting, LED"],"aliases":["wall pack","pole light","parking lot light"],"service_life":{"median_years":25,"range_years":[10,25],"range_basis":"source_spread"},"pm_tasks":[],"basis":[{"type":"public_document","life_type":"planning","title":"CNA e-Tool Estimated Useful Life Table","by":"U.S. Department of Housing and Urban Development","url":"https://www.hud.gov/sites/documents/eul_for_cna_e_tool.pdf","page":3,"code":"HUD CNA 3.2.8.2.7","label":"Pole mounted lights","years":25,"note":"Same life for family and elderly properties. US multifamily housing. HUD gives pole-mounted site lights 25 years and building-mounted lights 10, without naming the lamp technology."},{"type":"public_document","life_type":"planning","title":"CNA e-Tool Estimated Useful Life Table","by":"U.S. Department of Housing and Urban Development","url":"https://www.hud.gov/sites/documents/eul_for_cna_e_tool.pdf","page":3,"code":"HUD CNA 3.2.8.2.9","label":"Building Mounted Lighting","years":10,"note":"Same life for family and elderly properties. US multifamily housing."},{"type":"public_document","life_type":"design","title":"Design standards: employer's requirements – Technical Manual (ER-DFE-XX-XX-T-X-0201, revision A-C01)","by":"Department for Education (England)","url":"https://assets.publishing.service.gov.uk/media/6971f649d8adeaf266040501/ER-DFE-XX-XX-T-X-0201-Technical_Manual-A-C01.pdf","page":294,"code":"5.8.4","label":"External luminaires and lighting columns: 25 years","years":25,"note":"Printed page 294. External LED luminaires and columns on a school site. Minimum life expectancy (design requirement) for DfE-funded school buildings. Minimum design requirements placed on contractors for school buildings, not observed replacement ages. Section 5.1.4 (sanitaryware) refers to CIBSE Guide M Appendix 12.A1 'in general'."}],"confidence":{"grade":"C","sample_size":null},"open_questions":["Every source here is a published planning, design or accounting life. None is observed replacement data.","No preventive maintenance tasks are sourced yet."],"contributors":["unfinished.one editors"],"last_reviewed":"2026-10-22","canonical_url":"https://unfinished.one/c/lighting-exterior-led","versioned_url":"https://unfinished.one/c/lighting-exterior-led/v/0.2.0","licence":"CC-BY-4.0","citation":"unfinished.one (2026). Exterior and site lighting, LED, v0.2.0. https://unfinished.one/c/lighting-exterior-led/v/0.2.0"}