AI agents for business finance: what they can and can't do
What AI agents can do in bookkeeping, close, collections and compliance today, where a person must stay in charge, and how to judge a product.
The short answer
Most plumbers in Nigeria learn through an apprenticeship or a technical or vocational course, then start with a hand-tool kit that cost about ₦195,000 in our labelled example. Price each job as materials plus labour plus a margin: our example bathroom fit-out comes to ₦466,500 when the plumber supplies the materials, or ₦120,000 for labour alone.
What a small plumbing business does
A one-person plumbing business in Nigeria usually earns from four kinds of work: new installations in buildings under construction, bathroom and kitchen refits, repairs (leaks, blocked drains, faulty cisterns, low pressure) and water supply work such as connecting overhead tanks, pumps and boreholes to the house. New builds pay in larger sums but slowly, often in stages tied to the contractor. Repairs pay small sums quickly and bring the referrals that keep a plumber busy between big jobs.
The trade rewards reliability more than anything else. A plumber who arrives when promised, tests the work before leaving and comes back if something leaks will be passed from one landlord, estate manager or site engineer to the next.
Training routes
- Apprenticeship. The most common route: you work under an experienced plumber, learn on real sites and often pay a fee or work for a stipend. Agree in writing how long it lasts and what you will be taught, including pipe joining, pressure testing and reading drawings.
- Technical colleges and vocational centres. Some government technical colleges, polytechnic skills centres and private training centres run plumbing courses. Ask what certificate you get at the end and whether practical hours are included.
- Working with a building contractor. Joining a contractor's site team teaches the sequence of a build: when first-fix pipes go in, when tiling happens, and when final fittings are fixed.
Whichever route you take, learn to read a simple drainage layout and to pressure-test a water line before walls are tiled. Most callbacks come from joints that were never tested.
A starter tool kit (example figures)
| Tool (example) | Amount |
|---|---|
| Two pipe wrenches | ₦25,000 |
| PPR pipe welding machine with dies | ₦45,000 |
| Pipe cutter | ₦8,000 |
| Hacksaw and files | ₦7,000 |
| Electric drill with masonry bits | ₦60,000 |
| Spirit level and measuring tape | ₦8,000 |
| Plunger and drain auger | ₦20,000 |
| Hammer and chisels | ₦10,000 |
| Toolbox | ₦12,000 |
| Total | ₦195,000 |
These are example prices, not a market survey; prices differ by city and brand. Many plumbers start with hand tools and a borrowed welding machine, then buy power tools from their first jobs. Add transport: carrying pipes and a toolbox on public transport is hard, so budget for a tricycle or van hire on big jobs.
Materials: where quality decides callbacks
Clients often buy fittings themselves to control cost. That is fine, but tell them in writing which items you will not guarantee if they choose very cheap ones. Common points of failure are thin-walled pipes, poor-quality PPR fittings that crack under heat, cheap flexible connectors under basins, and cistern mechanisms that wear out within months.
- Use pipes of the pressure rating the job needs, especially on lines from a pump.
- Keep hot and cold lines in the material the fittings are made for; do not mix systems without the right adaptors.
- Give waste pipes enough fall towards the drain so they do not block.
- Pressure-test water lines before tiling and show the client the result.
Quoting a bathroom job: worked example
Example only. A client wants a WC, a wash-hand basin with pedestal and a shower mixer fitted in a new bathroom, with all supply and waste pipes. The plumber estimates two days with one helper.
| Item (example) | Amount |
|---|---|
| WC set | ₦120,000 |
| Basin with pedestal | ₦60,000 |
| Shower mixer | ₦45,000 |
| PPR pipes and fittings | ₦55,000 |
| Waste pipes and fittings | ₦25,000 |
| Sealant, tape and clips | ₦10,000 |
| Materials subtotal | ₦315,000 |
| Handling charge on materials supplied (10%) | ₦31,500 |
| Labour (two days, plumber and helper) | ₦120,000 |
| Quote if the plumber supplies materials | ₦466,500 |
Behind the ₦120,000 labour figure: the plumber values his own day at ₦25,000 and pays the helper ₦10,000 a day, so two days cost ₦70,000, plus ₦8,000 transport, a total of ₦78,000. The remaining ₦42,000 is the margin that pays for tools, phone calls, unpaid site visits and the risk of a return trip. If the client buys the materials, the quote is ₦120,000 for labour only.
Terms to put on the quote
- What is included and what is not (for example, tiling and breaking walls).
- Who supplies materials and which brands.
- Deposit before work starts and the balance on completion and testing.
- How long you will return free of charge if a joint you made leaks.
Registering and getting paid
The Corporate Affairs Commission's fee schedule gazetted in May 2025 lists ₦1,000 for reserving a business name; check the full registration fee on the CAC portal before you pay, and see our guide to registering a business name with CAC.
Keep a simple record of every job: client, address, quote, deposit, balance and date completed. It shows you which kind of work pays best and is the record you need for tax; our guide to tax on side-hustle income explains the basics. VAT stays at 7.5% under the Nigeria Tax Act 2025, so check whether your turnover means you must charge it.
Where Pryme fits
A Pryme Business Account keeps job money apart from personal spending. You can send clients an invoice through invoicing and give a verifiable receipt for a deposit through receipts, built with VerifyDoc.ai, so both sides have a record that cannot be altered.
Questions people ask
How much does it cost to start a plumbing business in Nigeria?
In our labelled example, a basic hand and power tool kit costs about ₦195,000. Many plumbers start with fewer tools and add more from early jobs. Prices vary by city and brand.
How do plumbers charge for a bathroom in Nigeria?
Most quote materials and labour separately. In our example, labour for fitting a WC, basin and shower over two days is ₦120,000, and the full quote with materials supplied is ₦466,500.
How long does it take to learn plumbing?
It depends on the route. Apprenticeships and vocational courses vary in length; agree in writing what you will learn, and make sure it includes pressure testing and reading drawings.
Do I need to register my plumbing business with CAC?
You can work without registration, but a registered business name helps with contractors and estate managers. CAC's May 2025 schedule lists ₦1,000 to reserve a name; check the current registration fee on the portal.
Sources
- Corporate Affairs Commission: New Schedule of Fees (gazetted 29 May 2025) · accessed Oct 2026
- Forvis Mazars: Nigeria Tax Act 2025, VAT key business changes (16 Mar 2026) · accessed Oct 2026
This article is general information, not financial, legal or tax advice. Products described are provided under the terms on this site and are subject to regulation and eligibility.