NCWSC/19/2026 Proposed Sewer Upgrade in Imara Daima - Nairobi City Water & Sewerage Company works tender

What is being bought

Works contract for a proposed sewer upgrade in Imara Daima, Nairobi, invited by Nairobi City Water & Sewerage Company Ltd under an open national tender. Submission is by physical hard copy only; no electronic tenders are permitted.

Key facts

Closing

Fri 6 Nov 2026, 12:00 pm
Tenders must be delivered to the Tender Box by the closing date and time; late tenders are rejected. D1 p.1

Bid / tender security

Tender security of Ksh 500,000 in Kenya shillings, valid 240 days, in the form of an unconditional bank guarantee from a bank regulated by the Central Bank or insurance company approved by IRA and enlisted by PPRA; tender validity is 210 days and the security must be valid 30 days beyond it per the standard clause. Conflicting D1 p.3

Tender fee

Tender documents obtained electronically are free of charge; no tender fee is stated. D1 p.3

Site visit

Υποχρεωτικό
Pre-arranged mandatory pre-tender site visit at Nairobi City Water & Sewerage Company Ltd, Kampala Rd HQ. Non-attendance is disqualifying under preliminary evaluation. D1 p.30

Pre-bid meeting

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

Reserved for

Reservation: N/A. The TDS states the tender is not reserved to any group. D1 p.32

Contract value

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

Tender opening

Tenders are opened publicly at Nairobi City Water and Sewerage Company Ltd, Tender Box, first floor Administration Block, Kampala Road, off Enterprise Road. D1 p.31

Tender validity

Tender validity period is 210 days from the date of opening of tenders. D1 p.3

Who can apply

• Open competitive tender open to all qualified and interested tenderers; a firm, individual or combination of such entities may tender. No joint venture is allowed under the TDS. D1 p.3
• Maximum number of members in the Joint Venture: No JV is allowed. D1 p.30

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 no involvement in corruption if selected. D1 p.34
• Data subject consent form duly filled. D1 p.34
• Valid bid security from a bank or insurance company approved by IRA and enlisted by PPRA, not less than Kes 500,000. 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, on the provided format and bidder's letterhead. D1 p.34
• Bill of Quantities duly completed on the provided BOQ (mandatory for uniformity). D1 p.35
• Any financial alterations must be countersigned by the bidder. D1 p.35
• Confidential Business Questionnaire duly filled, signed and stamped. D1 p.35
• Copy of valid certificate of incorporation/registration; for companies a valid CR12 dated within the last 3 months. For sole proprietors/partnerships, ID cards/passports of directors. D1 p.35
• Copy of current valid Compliance Certificate to Social Health Authority. D1 p.35
• Copy of current valid Compliance Certificate to NSSF. D1 p.35
• Declaration of any past or current litigation or arbitration in which the bidder is or was a party. D1 p.35
• Evidence of financial resources (lines of credit or letter of credit, or cash in account) equal to or above Ksh 20 million; account statement certified as true copy by a commissioner of oaths. D1 p.35
• Audited accounts for the last two financial years, showing the auditor's ICPAK practising licence registration number. D1 p.35
• Written Power of Attorney, duly signed and stamped. D1 p.35
• Attend the mandatory site visit and attach the duly filled Site Visit Certificate. D1 p.35
• Every page stamped with official rubber stamp, including all attachments, and all pages chronologically serialized numerically. D1 p.35
• Authority to seek references from the bidder's bankers and all references submitted. D1 p.35
• Submit all pages of the bid document as issued by NCWSC without altering its content, spiral or Vero bound. 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. D1 p.35
• Copy of Certificate of Bidder's Visit to Site, completed by both parties, original attached on submission. D1 p.249
• Signed Form of Tender Security or Tender-Securing Declaration as specified in the TDS (bank guarantee in the amount specified). D1 p.3
• Authorisation to sign on behalf of the tenderer: a Power of Attorney. D1 p.32

Experience, licences and financial capacity

Technical

• Experience of at least five civil works projects, of which three must be water and sewer works, within the last five years, with letters of award and completion certificates; list of projects and client contacts. D1 p.35
• Evidence 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 qualification certificates attached. D1 p.35
• Bidder must declare previous engagements with the Company and their performance. D1 p.35
• Affirmation letter of availability of the proposed personnel for this project. D1 p.36
• 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.36
• Letter of completion period for this assignment. D1 p.36
• Draft programme of works in the form of a bar chart. D1 p.36

Financial

• Minimum average annual construction turnover of Kenya Shillings 50 million, calculated from total certified payments received for contracts in progress and/or completed within the last one year (ITT section) / two years (qualification form). D1 p.37
• Access to or availability of liquid assets, unencumbered real assets, lines of credit and other financial means sufficient to meet construction cash flow of Kenya Shillings 50 million equivalent, independent of any advance payment. D1 p.37
• At least five contracts of similar nature executed within Kenya or the EAC, each of minimum value Kenya Shillings 50 million equivalent, substantially completed as prime contractor, JV member or sub-contractor. D1 p.37
• Audited balance sheets for the last two years demonstrating current financial soundness and prospective long-term profitability. D1 p.39

How and where to submit

• Deliver tender in a single sealed envelope/package/container bearing the tender name and reference number, addressed to the Procuring Entity, with inner envelopes marked ORIGINAL and COPIES, to the Tender Box at Nairobi City Water and Sewerage Company Ltd, first floor, Administration Block, Kampala Road, off Enterprise Road, P O Box 30656-00100, Nairobi. D1 p.32
• Submit one original marked ORIGINAL and the number of copies specified in the TDS: 1 copy, marked COPY. Note the preliminary evaluation separately requires two copies (ORIGINAL BID and COPY BID). Conflicting D1 p.32
• Tenders shall not be submitted electronically. D1 p.32
• Tender must be typed or written in indelible ink, signed by an authorised person, with name and position typed below each signature; all corrections initialled. Standard rule D1 p.19
• Tender must be in English; supporting documents in another language need an accurate notarised English translation. Standard rule D1 p.12

Lots and categories

• No lots: the tender is a single contract. Multiple contracts are N/A. Not stated 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

• Addenda (A1, A2...) and any changes to dates, security or requirements were not provided; the closing date and bid security should be confirmed against any addenda.
• Full Section IV forms, BOQ and drawings were not provided.
• Contract value / engineer's estimate not stated in the material reviewed.
• Performance security amount and form (ITT 48.1 refers to TDS) not clearly stated.
• Confirmation of the number of copies required (1 versus 2).
• Whether the tender is subject to post-qualification (ITT 39) not confirmed.
• Bid validity date computation: exact date the security expires not provided.

Terms explained

TDS

Tender Data Sheet: the tender-specific section that sets values (dates, amounts, copies) that supplement the standard Instructions to Tenderers.

ITT

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

Tender security

A bank guarantee or similar security submitted with the bid to ensure the bidder keeps its offer open and signs the contract if awarded; forfeited if the bidder withdraws or fails to sign.

Responsive

A tender that meets all mandatory requirements and conditions of the tender documents; non-responsive tenders are rejected.

AGPO

Affirmative action procurement for youth, women and persons with disabilities; not stated as applicable to this tender.

NCA

National Construction Authority, the regulator requiring contractor registration for construction works in Kenya.

CR12

Company return of particulars from the Registrar of Companies showing directors and shareholders; here must be dated within 3 months.

JV

Joint venture: a temporary grouping of firms bidding together; not allowed in this tender.

BOQ

Bill of Quantities: the priced list of works items that must be completed on the entity's form.

Preliminary examination

Initial check of mandatory documents; bidders who fail any item are dropped before technical evaluation.