[{"data":1,"prerenderedAt":73},["ShallowReactive",2],{"guide-contractor-vs-diy-zh-Hant":3},{"guide":4,"related":53},{"title":5,"seoTitle":6,"description":7,"summary":8,"sections":9,"faq":30,"date":37,"service":38,"order":39,"sources":40,"slug":51,"locale":52},"自行施工與聘請承包商的成本比較","自行施工與聘請承包商成本比較","紐約市及長島哪些工程聘請持牌承包商比自行施工更划算：以批發價採購物料、減少返工，並已包括許可證。","自行施工看似便宜，但物料以零售價購買，再加上租用工具及返工費用，往往並不划算。持牌承包商透過行內供應商以批發價採購物料，熟悉驗收要求，並負責申請許可證；在紐約市，電力、水喉及煤氣工程的許可證須由持牌總電工或總水喉技師申請，業主不能自行申請。",[10,14,22,26],{"heading":11,"paragraphs":12},"以批發價採購物料",[13],"持牌承包商在電料、水喉及建材供應商設有行內帳戶。電線、斷路器、水管、潔具、瓷磚及木材的價格，往往明顯低於大型零售店，亦可訂購店內沒有的貨品。",{"heading":15,"list":16},"自行施工容易忽略的成本",[17,18,19,20,21],"租用工具及設備","施工失誤及退換貨造成的額外物料開支","驗收不合格後返工","維修不當引致的水浸或火警損失","業主自身投入的時間，往往長達數個週末",{"heading":23,"paragraphs":24},"須由持牌人員施工的工程",[25],"在紐約市，電力工程必須由持牌總電工施工，水喉及煤氣工程必須由持牌總水喉技師施工。未經許可的工程可能招致違規罰單、保險問題，以及出售或轉按時的延誤。",{"heading":27,"paragraphs":28},"適合業主自行處理的工程",[29],"油漆、清潔，以及與電力及水喉無關的收尾工程，均適合業主自行處理。常見的節省方式，是由業主完成前期準備及油漆，電力及水喉工程則交由持牌總電工及總水喉技師負責。",[31,34],{"q":32,"a":33},"承包商會否以批發價向客戶收取物料費用？","各承包商的報價方式不盡相同。建議要求報價單將物料費用分項列明，以便與零售價格進行對比。",{"q":35,"a":36},"業主可否自行購買物料？","可以。業主自行購買潔具及電器的情況十分常見，屆時報價只計算人工費用。","2026-10-25","renovation",7,[41,45,48],{"title":42,"url":43,"publisher":44},"Electrical Permit","https:\u002F\u002Fwww.nyc.gov\u002Fsite\u002Fbuildings\u002Fproperty-or-business-owner\u002Felectrical-permit.page","NYC Department of Buildings",{"title":46,"url":47,"publisher":44},"Plumbing Permits","https:\u002F\u002Fwww.nyc.gov\u002Fsite\u002Fbuildings\u002Fproperty-or-business-owner\u002Fplumbing-permits.page",{"title":49,"url":50,"publisher":44},"Do I Need a Permit?","https:\u002F\u002Fwww.nyc.gov\u002Fsite\u002Fbuildings\u002Fproperty-or-business-owner\u002Fdo-i-need-a-permit.page","contractor-vs-diy","zh-Hant",[54,60,64,69],{"slug":55,"title":56,"description":57,"service":58,"date":59},"nyc-renovation-permits","紐約裝修及電力工程許可證須知","哪些裝修、電力及水喉工程需要紐約市建築局（DOB）許可證、由誰申請，以及長島的不同之處。","electrical","2026-10-24",{"slug":61,"title":62,"description":63,"service":58,"date":59},"electrical-panel-upgrade","更換電箱及供電升級的徵兆、步驟及所需時間","紐約市及長島舊屋何時需要更換電箱或升級供電、工程內容及所需時間。先進行負荷計算，可避免不必要的開支。",{"slug":65,"title":66,"description":67,"service":68,"date":37},"ev-charging-without-service-upgrade","毋須升級供電的電動車充電方案","負載分配、CT 夾動態負載管理、乾衣機插座共用裝置及合適電流的充電器：紐約市及長島毋須升級供電即可安裝充電器的方案。","ev-charging",{"slug":70,"title":71,"description":72,"service":68,"date":59},"ev-charger-installation","紐約市及長島家用電動車充電器安裝","Level 1 與 Level 2 的分別、電箱容量、許可證、Tesla Powershare，以及紐約市及長島住宅和樓宇安裝須知。",1792924281468]