NCWSC/16/2026 - Proposed sewer upgrade in East Africa School of Aviation (Nairobi, Works, open tender)

What is being bought

Nairobi City Water & Sewerage Company Ltd invites sealed tenders for the construction of a proposed sewer upgrade in East Africa School of Aviation, Nairobi. Procurement category is Works under open national competitive tendering. The reviewed pages do not state a quantity or detailed scope beyond the title.

Key facts

Closing

Fri 6 Nov 2026, 12:00 pm
Tenders must be delivered to the Tender Box, first floor, Administration Block, Nairobi City Water and Sewerage Company Ltd, Kampala Road, off Enterprise Road, on or before Friday 6 November 2026 at 12:00 noon. Electronic tenders are not permitted. D1 p.3

Bid / tender security

Tender security of Kenya Shillings 700,000 in the form of an unconditional bank guarantee from a bank regulated by the Central Bank of Kenya, or an insurance company approved by IRA and enlisted by PPRA, valid for 240 days. Must be in original form. D1 p.32

Tender fee

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

Site visit

Mandatory
Pre-arranged mandatory pre-tender site visit at Nairobi City Water & Sewerage Company Ltd, Kampala Rd HQ, meeting point. A Certificate of Bidder's Visit to Site must be completed by both parties and 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 reserved: TDS states the invitation is extended to no reserved group (N/A). Portal lists no reserved groups. D1 p.32

Contract value

Not stated in the documents we reviewed Not stated D1

Tender opening

Tenders are opened publicly at the Tender Box, first floor, Administration Block, Kampala Road, on Friday 6 November 2026 at 12:00 noon, in the presence of tenderers' designated representatives who choose to attend. D1 p.32

Tender validity

Tenders remain valid for 210 days from the date of opening of tenders. D1 p.3

Who can apply

• Open to all qualified and interested tenderers. Tenderers may be a firm, state-owned enterprise meeting ITT 3.8 conditions, or individuals. No joint venture is allowed. D1 p.31

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'. D1 p.34
• Written confirmation on bidder's letterhead that the bidder is not debarred and is eligible to participate in procurement. D1 p.34
• Statement on bidder's letterhead declaring that, if selected, the bidder shall not be involved in corruption. D1 p.34
• Data subject consent form duly filled. D1 p.34
• Valid bid security (see bid_security item). D1 p.34
• Copy of current valid Tax Compliance Certificate. D1 p.34
• Copies of identification cards or passports of the company directors. D1 p.34
• Form of Tender duly completed, signed and stamped, in the format provided and on bidder's letterhead. D1 p.34
• Bill of Quantities (BOQ) fully completed on the provided BOQ; any financial alterations countersigned by the bidder. D1 p.34
• Confidential Business Questionnaire duly filled, signed and stamped. D1 p.34
• Copy of valid certificate of incorporation/registration; for companies a valid CR12 dated within the last 3 months. D1 p.34
• Copy of current valid compliance certificate to Social Health Authority. D1 p.34
• Copy of current valid compliance certificate to 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 or letter of credit, or cash in account) of at least Ksh 20 million; account statement certified as true copy by a commissioner for 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, authorising the signatory. D1 p.35
• Certificate of Bidder's Visit to Site, completed by both parties, original attached to bid. D1 p.35
• Authority to seek references from bidder's bankers, and all references submitted in the document. D1 p.35
• Copy of current valid County Business Permit to engage as a contractor. D1 p.35
• Copy of the drawings issued by NCWSC attached. D1 p.35
• Copy of the NCWSC bid document returned complete with all pages as issued, unaltered; bid document and forms completed, signed and stamped. D1 p.35
• Every page stamped with official rubber stamp, and all pages serialized numerically including attachments. D1 p.35
• Registration with National Construction Authority (NCA) category 5 for Water or above, with current registration and practising licence certificate submitted with bid. D1 p.36
• Authority to seek references and affirmation letter of personnel availability, letter of completion period, and draft program of works (bar chart) are required technical items. D1 p.36

Experience, licences and financial capacity

Technical

• Experience of at least five civil works projects within the last five years, of which three must be in water and sewer works; letters of award and completion certificates required; client contacts to be listed. 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
• Key personnel: Site Manager with minimum Higher Diploma in Building & Construction/Civil Engineering or equivalent and five years experience; Land Surveyor with minimum Diploma in Survey or equivalent and five years experience; CVs and qualification certificates attached. D1 p.35
• Bidder must declare previous engagements with the Company and their performance; affirmation letter of availability of proposed personnel. D1 p.35

Financial

• Minimum average annual construction turnover of Kenya Shillings 50 million, calculated as total certified payments received for contracts in progress and/or completed within the last one year (ITT qualification section); the qualification form says the last two years divided by one. Conflicting D1 p.37
• Access to liquid assets, unencumbered real assets, lines of credit or other financial means sufficient to meet construction cash flow of Kenya Shillings 50 million; audited balance sheets for the last two years. D1 p.37
• Evidence of financial resources of at least Ksh 20 million (preliminary evaluation item) and at least 50 million construction cash flow capacity (qualification criteria); both apply. Conflicting D1 p.34
• At least five contracts of a similar nature, each of minimum value Kenya Shillings 50 million equivalent, satisfactorily and substantially completed as prime contractor, JV member or sub-contractor, within Kenya, EAC or broad. D1 p.37
• No history of non-performing contracts due to contractor default, and no consistent history of court or arbitral awards against the tenderer in the last five years. D1 p.38

Lots and categories

• Single contract; no lots are specified (multiple contracts N/A). D1 p.36

What the addenda changed

• No addenda were provided in the reviewed material. Not stated P

Not covered in the documents we reviewed

• Scope of works, quantities and specifications (Section IV/Part 2 Works Requirements and drawings not provided)
• Estimated contract value and budget
• Performance security amount and form (ITT 48 refers to TDS in general terms)
• Pre-tender meeting date if any beyond the mandatory site visit
• Addenda, if any, issued after the original document
• Section IV tender forms and Confidential Business Questionnaire format
• Contract completion period
• Tender security form and any Tender Securing Declaration details
• Notice of Intention to Award and standstill period details
• Only 35 of 246 pages reviewed; remaining pages not provided

Terms explained

TDS

Tender Data Sheet: the section of tender-specific values that supplements the general Instructions to Tenderers.

ITT

Instructions to Tenderers: the general rules for preparing and submitting a tender.

Tender security

A guarantee or deposit submitted with the bid to protect the procuring entity if the tenderer withdraws or fails to sign the contract.

AGPO

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

Responsive

A bid that meets all mandatory requirements; non-responsive bids are rejected without further evaluation.

CR12

Company Registry return of directors and shareholders, required to be dated within the last three months.

NCA

National Construction Authority, the registration body for contractors working in Kenya.

BOQ

Bill of Quantities: the priced schedule of work items the bidder must fill in.

Power of Attorney

Written authority allowing a named person to sign the tender on behalf of the company.