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Section V: Capital Assets Estimated Useful Life <br />The City's capital assets are depreciated over the following estimated useful lives derived from <br />the Internal Revenue Service Alternative Depreciation System (ADS): <br />Land Indefinite life, not depreciated <br />Buildings and Building Improvements <br />Buildings <br />40 years <br />Temporary and portable buildings <br />25 years <br />Roof <br />20 years <br />HVAC (heating, ventilation, air conditioning) <br />20 years <br />Electrical <br />20 years <br />Plumbing <br />20 years <br />Sprinkler system <br />20 years <br />Elevators <br />20 years <br />Floor covering other than carpet <br />15 years <br />Interior construction <br />15 years <br />Security and fire alarm system <br />10 years <br />Cabling <br />10 years <br />Interior renovation <br />10 years <br />Carpeting <br />7 years <br />Other buildings and building improvements not listed above <br />7-40 years <br />Improvements Other Than Buildings (Land Improvements) <br />Fencing and gates <br />20 years <br />Landscaping <br />20 years <br />Outdoor sprinkler and irrigation systems <br />20 years <br />Golf courses <br />20 years <br />Swimming pools, tennis and basketball courts, skate parks <br />20 years <br />Fountains <br />20 years <br />Retaining walls <br />20 years <br />Outdoor lighting <br />20 years <br />Recreation areas and athletic fields, including bleachers <br />15 years <br />Paths and trails <br />15 years <br />Septic systems <br />15 years <br />Other improvements not listed above <br />15-20 years <br />Machinery and Equipment <br />Outdoor equipment (playgrounds, scoreboards) <br />15 years <br />Firefighting trucks <br />15 years <br />Athletic equipment <br />10 years <br />Telecommunications equipment <br />10 years <br />Fire department equipment <br />10 years <br />Furniture and fixtures (excluding structural components) <br />10 years <br />Grounds equipment (mowers, tractors, bobcats) <br />10 years <br />Kitchen equipment (appliances) <br />10 years <br />Lab equipment <br />10 years <br />Law enforcement equipment <br />10 years <br />Custodial equipment <br />10 years <br />Business machines and office equipment <br />7 years <br />Audio visual equipment <br />6 years <br />7 <br />