This tender invites bids for the construction of 2x3 and 4x3 duct lines with mainholes for external electrification in Capital Development Authority (CDA) Sector E-12 Part II, Islamabad. The project is under deposit head and must be executed according to WAPDA/IESCO SDI specifications under the jurisdiction of IESCO and its Construction Division. The scope includes civil works involving duct line installation and mainhole construction, requiring adherence to engineering standards and quality materials suitable for the Islamabad region. The estimated cost is PKR 23,383,138 with a completion period of six months from contract signing. Bidders must be registered with Pakistan Engineering Council (PEC) with specialized codes EE-04, EE-05, CE-10, and maintain active registration until June 30, 2026. Firms should be prequalified by NTDC Lahore and registered with FBR, including valid NTN, GST, and Punjab Revenue Authority status. Financial criteria include a minimum net worth of PKR 9,353,255 and average annual turnover of PKR 46,766,276 over the last three years. Joint ventures are allowed under strict conditions including notarized agreements and registration on EPADS. The bid price must be inclusive of all applicable taxes. Compliance with PEC category C6 and above is mandatory. Bidders must submit a 2% Call Deposit Receipt (CDR) of the BOQ cost as bid security and provide a performance guarantee of 5% of the bid price upon award. The bid validity period is 180 days. The tender follows the single stage single envelope bidding procedure via the EPADS online portal. The bid submission deadline is 10:30 AM on 17th March 2026, with bid opening at 11:00 AM the same day at IESCO Head Office, Street No. 40, Sector G-7/4, Islamabad. Pro-Tip: Ensure all mandatory documents including fresh bank statements, tax returns for FY 2024-25, and valid PEC registration are uploaded correctly on EPADS. Pay special attention to the bid security format and original submission on bid opening day to avoid disqualification. Also, review the tender documents carefully for WAPDA/IESCO SDI compliance and technical specifications to avoid non-responsiveness.