You don't need an office. You don't need a receptionist. You don't even need a laptop. Plenty of plumbers are running profitable businesses with nothing more than a van, a phone, and the right setup.
The key is going paperless and putting the right tools on your phone. Here's exactly how to do it.
Ditch the Paper Invoices
If you're still writing invoices on a pad and handing them to customers, stop. Paper invoices get lost, they look unprofessional, they can't include a payment link, and you've got no record of what you sent.
Switch to a phone-based invoicing app. The main options for tradespeople are:
QuickBooks Self-Employed — £10/month. Does invoicing, expense tracking, and tax estimates. The app is solid and you can create an invoice in about two minutes.
Xero — from £15/month. More powerful, better if you're VAT registered or have an accountant who uses it. The mobile app is decent but the desktop version is better.
Invoice Ninja — free for basic use. Open source, looks professional, does the job. Worth a look if you're watching your pennies.
Whichever you choose, the process is the same: finish the job, open the app, type what you did, add the amount, hit send. The customer gets an email with a professional invoice and a link to pay online. Done before you've started the engine.
Cloud Calendar for Your Diary
Google Calendar. That's it. It's free, it syncs across all your devices, and it's dead simple.
For each job, create an event with: customer name, address, phone number, and a brief description of the work. Set a reminder for the evening before. If your partner or anyone else helps manage your diary, share the calendar with them so they can see your availability in real time.
One tip: colour-code your entries. Green for confirmed jobs, yellow for quotes, red for urgent callouts. You can see your week at a glance without reading every entry.
WhatsApp for Customer Communication
Forget email for day-to-day customer communication. Most of your customers prefer WhatsApp and so should you. It's instant, it supports photos and videos (handy for showing the customer what you've found), and it keeps the whole conversation in one thread.
Set up WhatsApp Business on your work phone. Fill in your business profile: name, description, opening hours, address. Set up quick replies for common messages — things like your standard callout rate, your service area, or a booking confirmation template.
The catalogue feature is underused by tradespeople. You can list your main services with descriptions and prices. When someone asks "how much for a power flush?", you tap two buttons and send them the answer. No typing required.
Photos as Documentation
Before every job, photograph what you're working on. Leaking pipe? Photo. Corroded valve? Photo. Bodge job left by the last plumber? Definitely a photo.
These protect you if there's ever a dispute. "That crack was already there" becomes a non-argument when you've got a timestamped photo from before you started. Some plumbers create a Google Photos album for each job — quick, free, and searchable.
After the job, photograph the finished work too. It builds your portfolio. Those photos go on your Google Business Profile, your social media, and your website. Free marketing that shows real work, not stock images.
Expense Tracking on the Go
Every time you buy materials, fuel, tools, or anything else for the business — photograph the receipt. Apps like Dext (formerly Receipt Bank) or even just a dedicated Google Photos album will save you hours at tax time.
The envelope-of-receipts-on-the-dashboard method works until it doesn't. One rainy day with the window open and six months of receipts are destroyed. Go digital and never worry about it again.
The Van Office Setup
Here's what your van office actually needs:
Phone mount. A proper one, not balanced on the dashboard. £15 from Amazon. You need to see your calendar, navigate to jobs, and take calls safely.
In-car charger. Your phone is now your office — it needs power all day. Get a decent one with fast charging. £10-15.
Bluetooth earpiece or van hands-free. For taking calls while driving. Essential and it's the law. £20-30 for a decent Jabra.
Small clipboard and pen. For the occasional thing that really does need paper — Gas Safe forms, landlord certificates, customer signatures.
That's about £60 total for your entire office setup. Compare that to £500+ a month for actual office space.
Some plumbers take it further with AI tools like Gaffer — running their entire business from a single WhatsApp conversation. They send a voice note saying "just finished at 42 Maple Road, fitted new bath taps and replaced the flexi hoses, charge them £175" and the invoice goes out automatically. They ask "what's my day looking like tomorrow?" and get their full schedule back. No apps to open, no forms to fill in.
Start Small
You don't need to do all of this at once. Start with the thing that causes you the most pain. If you're losing receipts, download Dext today. If you keep double-booking, set up Google Calendar tonight. If you're slow invoicing, pick an app and send your next invoice from it.
One change a week. In a month, you'll have a fully paperless business running from your van. No office, no admin assistant, no stress.