Build a Plumbing & Heating Business You’re Proud Of
Practical books, ready-made systems, and straight-talking support to help you quote with confidence, get your paperwork sorted, and grow a business that actually works for you.
Sound Familiar?
You’re brilliant at the work. You can fit a boiler, run pipework, and solve problems on site all day long. But running the business side? That’s a different story.
Quoting feels like guesswork
You spend hours pricing jobs, second-guessing yourself, and still end up wondering whether you’ve charged enough to actually make a profit.
Paperwork piles up
Invoices, receipts, CIS deductions, VAT returns — it never stops. And the thought of Making Tax Digital makes your head spin.
No systems, just chaos
Everything lives in your head (or on scraps of paper). You know you need better processes, but where do you even start?
Working hard, not profitably
You’re busy — flat out, in fact — but at the end of the month there’s not much to show for it. Something’s got to change.
There’s a Better Way to Run Your Business
Together We Build gives you practical, proven tools — not theory, not fluff. Everything is built specifically for plumbing and heating businesses, by someone who works with them every single day.
Learn the Fundamentals
Start with the books. The Quote Handbook fixes your pricing. The Systems Handbook sorts your operations. No waffle — just what works.
Get the Tools
Business in a Box gives you plug-and-play templates, calculators, checklists, and guides — everything you need to run a tight ship, ready to use from day one.
Get Expert Support
Need a hand with bookkeeping, VAT, payroll, or just someone to talk through your next move? We’ve got specialist services and coaching to back you up.
Your Toolkit for a Better Business
Whether you want to start with a book or go all-in with our subscription service, there’s something here for wherever you are right now.
The Quote Handbook
Stop second-guessing every quote. This book gives you a clear, repeatable framework for pricing your plumbing and heating jobs with confidence — so you win the right work at the right price.
The Systems Handbook
If your business runs on memory and good intentions, this book is for you. Learn how to build simple, effective systems that free up your time and keep everything running smoothly.
Business in a Box
Your all-in-one subscription for running a better trades business. Templates, tools, calculators, and step-by-step guides — all designed specifically for plumbing and heating companies.
Who’s Behind Together We Build?
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Aaron McLeish
I’m a specialist accountant who’s spent years working with plumbing, heating, and trades businesses across the UK. I’ve seen first-hand what separates the businesses that thrive from the ones that just survive — and it’s rarely about being better at the technical work.
It’s about pricing properly, having systems that don’t rely on you remembering everything, and knowing your numbers. That’s why I built Together We Build — to give trades business owners the practical tools and support they actually need.
I wrote The Quote Handbook and The Systems Handbook because I was tired of seeing good tradespeople held back by the business stuff nobody taught them. Whether you pick up a book, subscribe to Business in a Box, or get in touch for one-to-one support, I’m here to help you build something you’re proud of.
What Others Are Saying
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Frequently Asked Questions
Is this only for plumbing and heating businesses?
The books and Business in a Box are written specifically with plumbing and heating businesses in mind, but plenty of the principles apply to any trades business. If you’re a sole trader or small limited company in the trades, you’ll get a lot out of it.
I’m a sole trader — is this relevant to me?
Absolutely. In fact, most of the business owners we work with are sole traders or one-person limited companies. The tools and systems are designed to work whether you’re on your own or have a small team.
What’s included in Business in a Box?
It’s a subscription service that gives you access to ready-made templates, pricing calculators, checklists, and step-by-step guides. Think of it as your back-office toolkit — everything you need to run the business side of things properly, without starting from scratch.
Do you offer accountancy and bookkeeping services as well?
Yes. Through Together We Build, we offer bookkeeping, CIS returns, VAT and MTD compliance, self assessment, payroll, company formations, and business advisory. If you need hands-on help with your numbers, get in touch and we’ll have a chat.
Which book should I start with?
If you’re losing money on quotes or not sure how to price your jobs, start with The Quote Handbook. If your day-to-day operations feel chaotic and you want to get more organised, go for The Systems Handbook. Ideally, read both — they work brilliantly together.
Ready to Build a Business That Works for You?
You don’t have to figure it all out on your own. Whether you want to start with a book, grab the full toolkit, or just have a conversation about where your business is heading — we’re here.