This tender invites sealed bids from authorized firms and contractors registered with Sales Tax and Income Tax Departments for the special repair and maintenance of a residential building at the Anti-Smuggling Unit in Abbottabad. The scope includes architectural/civil work, finishing, woodwork, carpentry, electrical, plumbing, sanitary, UPVC windows, glass works, and other miscellaneous non-scheduled items. Bidding documents are available at the General Branch of Collectorate of Customs (Enforcement), Customs House, Peshawar upon payment of a non-refundable fee. Bids must be submitted to the Assistant Collector (HQ) office by the specified closing date and time, and bidders must hold a valid Pakistan Engineering Council certificate with Category C-5 or above.