NCWSC/17/2026 - Proposed Sewer Reticulation Works in Mihango (Nairobi City Water & Sewerage Co.)

What is being bought

Construction of proposed sewer reticulation works in Mihango, requested by Nairobi City Water & Sewerage Company Ltd under an open tender for works. Quantities and bill of quantities are not in the reviewed pages.

Key facts

Closing

Fri 6 Nov 2026, 12:00 pm
Tenders must be delivered by hand to the Tender Box, first floor Administration Block, Kampala Road, off Enterprise Road, Nairobi. Electronic tenders are not permitted. D1 p.3

Bid / tender security

Tender security of Ksh 500,000 in the form of an unconditional bank guarantee from a bank regulated by the Central Bank, or an insurance company approved by IRA and enlisted by PPRA, valid for 240 days from bid opening. Tender-securing declaration is not the specified option. D1 p.31

Tender fee

No tender fee is stated. Tender documents may be downloaded free of charge from the websites. D1 p.3

Site visit

Mandatory
Mandatory pre-arranged site visit at Nairobi City Water & Sewerage Company Ltd, Kampala Rd HQ. Tenderer's representative must attend and a Site Visit Certificate signed by both parties must be attached to the bid. D1 p.31

Pre-bid meeting

Not stated in the documents we reviewed Not stated D1 p.31

Reserved for

Not stated in the documents we reviewed Not stated D1 p.32

Contract value

Not stated in the documents we reviewed Not stated D1 p.3

Tender opening

Public opening of tenders immediately after the closing deadline at the Tender Box, Administration Block, first floor, Kampala Road. D1 p.32

Tender validity

Tender validity is 210 days from the date of opening of tenders. D1 p.31

Who can apply

• Open competitive tendering, open to all qualified and interested tenderers. D1 p.3
• No joint ventures are allowed. D1 p.31
• Foreign tenderers must source at least 40% of contract inputs from citizen suppliers and contractors and show evidence; foreign tenderers not meeting this are automatically disqualified. Standard rule D1 p.8
• A Kenyan tenderer must provide a valid tax compliance certificate issued by KRA to be eligible. Standard rule D1 p.9

Application checklist

Tick items off as you prepare. Your ticks stay on this device only.

Required from every bidder

• Two copies of the bid, marked ORIGINAL BID and COPY BID, plus one original as per the Tender Data Sheet (1 copy). Confirm copy count against both sources. Conflicting D1 p.33
• Written confirmation on bidder's letterhead that the bidder is not debarred and is eligible to participate in procurement. D1 p.33
• Statement on bidder's letterhead declaring that the bidder will not be involved in corruption. D1 p.33
• Data subject consent form, duly filled. D1 p.33
• Valid tax compliance certificate (current). D1 p.33
• Copies of identification cards or passports of the company directors. D1 p.33
• Form of Tender duly completed, signed and stamped, in the provided format and on bidder's letterhead. D1 p.33
• Bill of quantities fully completed on the BOQ provided by NCWSC. D1 p.34
• Any financial alterations must be countersigned by the bidder. D1 p.34
• Confidential Business Questionnaire, duly filled, signed and stamped. D1 p.34
• Certificate of incorporation/registration; for companies, a CR12 dated within the last 3 months. D1 p.34
• Valid compliance certificate from the Social Health Authority. D1 p.34
• Valid compliance certificate from NSSF. D1 p.34
• Declaration of any past or current litigation or arbitration in which the bidder is or was a party. D1 p.34
• Evidence of financial resources (lines of credit/letter of credit or cash in account) of at least Ksh 20 million, from a bank or cash in account, with account statement certified by a commissioner of oaths. D1 p.34
• Audited accounts for the last two financial years, showing the auditor's ICPAK practising licence registration number. D1 p.34
• Written power of attorney, duly signed and stamped. D1 p.34
• Site Visit Certificate, duly filled and signed by both parties, attached to the bid. D1 p.34
• Every page stamped with the official rubber stamp, including all attachments. D1 p.34
• All pages chronologically serialized numerically (1, 2, 3...) including all attachments. D1 p.34
• Authority to seek references from the bidder's bankers and all references submitted. D1 p.34
• Bid document as issued by NCWSC returned with all pages, without altering the content, and forms completed, signed and stamped. D1 p.34
• Current valid county business permit to engage as a contractor. D1 p.34
• Copy of the drawings issued by NCWSC attached. D1 p.34

Required only in some situations

• Copies of identification documents of sole proprietors/partners where applicable. D1 p.33

Experience, licences and financial capacity

Technical

• Experience of at least five civil works projects within the last five years, of which three must be water and sewer works, with letters of award and completion certificates. D1 p.35
• Schedule of construction equipment owned or to be leased (e.g. excavator, concrete mixer, compressor, tipper, pick-up, compactor, vibrator, water pump, level machine). D1 p.35
• Site Manager: minimum Higher Diploma in Building & Construction/Civil Engineering or equivalent and five years' experience. Land Surveyor: minimum Diploma in Survey or equivalent and five years' experience. CVs and certificates required. D1 p.35
• Declare previous engagements with NCWSC and their performance; any documented non-performance leads to disqualification. D1 p.35
• Affirmation letter of availability of proposed personnel for the project. D1 p.35
• Registered contractor with National Construction Authority NCA 5 for Water or above, with copy of current registration and practising licence certificate submitted with the bid. D1 p.35
• Letter stating the completion period for this assignment. D1 p.35
• Draft programme of works in the form of a bar chart. D1 p.35

Financial

• Minimum average annual construction turnover of Ksh 50 million; financial means (liquid assets, lines of credit) sufficient for construction cash flow of Ksh 50 million; audited balance sheets for two years. D1 p.36
• At least five similar contracts of minimum value Ksh 50 million each, completed as prime contractor, JV member or subcontractor, between 1 January 2016 and the submission deadline. D1 p.37
• Evidence of financial resources of at least Ksh 20 million (preliminary) from a bank or cash in account. D1 p.33

How and where to submit

• Deliver one sealed package by hand to the Tender Box at NCWSC, first floor Administration Block, Kampala Road, off Enterprise Road, P.O. Box 30656-00100, Nairobi. Mark the outer envelope with name and reference number. Electronic submission is not allowed. D1 p.31
• Submit the original marked ORIGINAL and one copy marked COPY; the Tender Data Sheet states 1 copy in addition to the original. Conflicting D1 p.31
• Authorization to sign on behalf of the tenderer: a Power of Attorney. D1 p.31
• Each inner envelope must bear the procuring entity's and tenderer's name and address and the tender name and reference number; tenders must be sealed. Standard rule D1 p.19
• Tenders must be in English, with all pages serialized and signed where amended. Standard rule D1 p.12

Lots and categories

• Single contract; no lots are specified in the reviewed pages. D1 p.36

What the addenda changed

• No addenda were provided for review. Not stated P

Not covered in the documents we reviewed

• Bill of quantities and technical specifications/drawings
• Estimated contract value or budget
• Addenda (none supplied)
• Performance security amount and form (ITT 48 in general terms only)
• Pages with Form of Tender, Confidential Business Questionnaire, and Schedule of Requirements

Terms explained

Tender security

Money or guarantee submitted with a bid to show it is serious; forfeited if the bidder withdraws or fails to sign the contract.

TDS

Tender Data Sheet, the section of tender-specific data that adds to or changes the standard Instructions to Tenderers.

AGPO

Affirmative action groups (youth, women, persons with disability) that can be reserved tenders; not reserved here.

Responsive

A tender that meets all mandatory requirements; non-responsive tenders are rejected.

MR

Mandatory requirement; an item that must be provided or the bid fails.

NCA 5

National Construction Authority registration class required for contractors on water works.

CR12

Company registry document showing shareholders and directors, required dated within 3 months.

JV

Joint venture; not permitted under this tender.