NCWSC/18/2026 - Proposed Sewer Expansion in Tena Estate (Works, Nairobi), closing 2026-11-06 12:00

What is being bought

Construction works for a proposed sewer expansion in Tena Estate, Nairobi, for Nairobi City Water & Sewerage Company Ltd. Submission is by physical hard copy only; electronic tenders are not permitted.

Key facts

Closing

Fri 6 Nov 2026, 12:00 pm
Tenders must be delivered on or before this date and time; portal closing time matches. Current date after all addenda: no addenda reviewed. D1 p.1

Bid / tender security

Tender security of Ksh 450,000, 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. Other forms (cash, guarantee) also allowed under ITT 19.2. D1 p.32

Tender fee

Tender documents may be obtained electronically free of charge; no fee is stated for purchasing the physical copy in the reviewed pages. D1 p.3

Site visit

Obligatoriu
Pre-arranged mandatory site visit at Nairobi City Water & Sewerage Company Ltd Kampala Rd HQ; attendance mandatory and a signed Site Visit Certificate 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

Reservation: the TDS states N/A; the tender is open to all, not reserved to SME, women, youth or persons with disability groups. D1 p.32

Contract value

Not stated in the documents we reviewed Not stated D1 p.36

Tender opening

Tenders opened publicly immediately after the deadline at the Tender Box, first floor Administration Block, Kampala Road, Nairobi, in the presence of tenderers' representatives who attend. D1 p.32

Tender validity

Tenders remain valid for 210 days from the date of opening; a tender valid for a shorter period is rejected. D1 p.3

Who can apply

• Open national competitive tender open to all qualified and interested tenderers. Tenderers may be a firm, individual, or JV, but the TDS states no JV is allowed. D1 p.3
• Maximum number of members in a Joint Venture: No JV is allowed. D1 p.30
• Tenderers must be a registered Contractor with the National Construction Authority (NCA) category 5 for Water or above. Registration is not a condition for tender but a condition of award and contract signature (ITT 3.12), while the evaluation criteria require a current NCA 5 (Water) certificate to be submitted with the bid. D1 p.36

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 letterhead that the bidder is not debarred and is eligible to participate in procurement. D1 p.34
• Statement on bidder letterhead declaring non-involvement 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 completed, signed and stamped, in the provided format and on bidder letterhead. D1 p.34
• Bill of Quantities fully completed on the provided BOQ (mandatory). 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
• Copy of valid certificate of incorporation/registration; for companies a CR12 dated within the last 3 months. Sole proprietors/partnerships attach IDs/passports of directors/partners. D1 p.34
• Current valid compliance certificate from the Social Health Authority. D1 p.34
• Current 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
• Written Power of Attorney, duly signed and stamped. D1 p.35
• Signed Site Visit Certificate attached (see site_visit item). D1 p.35
• Every page stamped with the official rubber stamp, including all attachments. D1 p.35
• All pages chronologically serialized numerically (1, 2, 3...) including all attachments. D1 p.35
• Authority to seek references from the bidder's bankers and all references submitted. D1 p.35
• Return the original bid document issued by NCWSC with all pages as issued, without altering content. D1 p.35
• Bound documents: spiral or Vero bound, not loose papers. D1 p.35
• Bid document and attached forms completed, signed and stamped. D1 p.35
• Copy of current County Business Permit to engage as a contractor. D1 p.35
• Copy of drawings issued by NCWSC attached. D1 p.35
• Certificate of Independent Tender Determination (anti-collusion) signed with the Form of Tender. Standard rule D1 p.6
• Data subject, Form of Tender and other forms as issued; Power of Attorney confirms signing authority (TDS ITT 20.3). D1 p.32

Experience, licences and financial capacity

Technical

• Experience of at least five civil works projects in the last five years, of which three must be water and sewer works, with letters of award and completion certificates; list of clients' 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 certificates required. D1 p.35
• Affirmation letter of availability of proposed personnel for the project. D1 p.36
• Attach letter of completion period for this assignment. D1 p.36
• Submit a draft programme of works in the form of a bar chart. D1 p.36
• Bidder must declare previous engagements with the Company and their performance. D1 p.35

Financial

• 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 as true copy 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
• Financial capability: access to liquid assets, unencumbered real assets, lines of credit or other means sufficient for construction cash flow of Kenya Shillings 50 million, and audited balance sheets for last two years. D1 p.38
• Minimum average annual construction turnover of Kenya Shillings 50 million (certified payments received over the last two years, divided by one year). D1 p.38
• At least five similar contracts each of minimum value Kenya Shillings 50 million equivalent, satisfactorily and substantially completed as prime contractor, JV member or subcontractor (the template text gives 'number' as blank in the qualification form). D1 p.37
• No consistent history of court or arbitral award decisions against the tenderer in the last five years; history of non-performing contracts must not be due to tenderer default in the last five years. D1 p.38
• Tax compliance: a Kenyan tenderer must provide a valid tax compliance certificate from KRA. D1 p.8

How and where to submit

• Submit by hand in a single sealed envelope bearing the tender name and reference number, addressed to the Managing Director, delivered 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. Electronic tenders not permitted. D1 p.32
• Inside the sealed envelope: one envelope marked ORIGINAL with all tender documents, and one marked COPIES with the required copies; inner envelopes show procuring entity, tenderer name and address, and tender reference number. Standard rule D1 p.19
• Copies: one original plus 1 copy (TDS). Original and copies must be typed or written in indelible ink and signed by an authorized person. D1 p.31
• Tenders are not to be submitted electronically. D1 p.32

Lots and categories

• No lots are specified; the tender is a single contract (multiple contracts marked N/A). Unverified D1 p.36

What the addenda changed

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

Not covered in the documents we reviewed

• Estimated contract value and whether a tender fee applies to purchasing hard-copy documents
• Full addenda list (none provided) and any amended closing date
• Pages with Section IV tender forms, Section VI-VIII technical specifications, and contract conditions beyond those provided
• Any pre-tender meeting details
• Standard Power of Attorney, Form CON-2, FIN-3.1 and EXP-4.1/4.2 format details
• Performance security amount and form

Terms explained

TDS

Tender Data Sheet: the tender-specific particulars that supplement the Instructions to Tenderers.

ITT

Instructions to Tenderers: the standard rules on how to prepare and submit a tender.

Tender security

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

Responsive

A tender that meets all mandatory terms and conditions; non-responsive tenders are rejected.

NCA

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

BOQ

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

CR12

Company registry extract listing directors and shareholders, which must be dated within the last 3 months here.

JV

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

Performance Security

Guarantee the winning bidder must provide within 21 days of the letter of award before contract signing.

Mandatory site visit

A visit to the site that bidders must attend and certify with a signed visit certificate.