{"id":"lighting-exterior-led","version":"0.4.0","classification":{"uniformat":"D5020"},"names":["Exterior and site lighting, LED"],"aliases":["wall pack","pole light","parking lot light"],"service_life":{"median_years":15,"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":"planning","title":"Purchasing Energy-Efficient Exterior Lighting (web page, modified 2026-03-05)","by":"U.S. Department of Energy, Federal Energy Management Program","url":"https://www.energy.gov/cmei/femp/purchasing-energy-efficient-exterior-lighting","code":"Table 2 assumptions","label":"\"Lifetime Energy Cost: Calculated as the sum of the discounted value of the annual energy cost and assumed product life of 15 years.\"","years":15,"note":"Outdoor LED wall-mounted luminaires (wall packs), the example in Table 2; the guidance also covers pole/arm-mounted area and roadway, decorative, canopy, bollard, parking garage and flood luminaires, but the 15-year assumption is stated for the wall-mounted example only."}],"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/0.4.0","licence":"CC-BY-4.0","citation":"unfinished.one (2026). Exterior and site lighting, LED, v0.4.0. https://unfinished.one/c/lighting-exterior-led/v/0.4.0"}