Case study
West Derby Heating & Plumbing
How a £1,500 monthly Google Ads budget generates £50,000 a month in revenue for a family-run heating and plumbing business in West Derby, Liverpool.
- Client
- West Derby Heating & Plumbing
- Sector
- Boilers, heating and plumbing
- Location
- 225 Eaton Road, West Derby, Liverpool
- Area served
- Merseyside and surrounding areas
- Primary service
- Google Ads
- Budget
- £1,500 a month

Answer-first summary
West Derby Heating & Plumbing is an independent, family-run business on Eaton Road in West Derby, Liverpool. Its Gas Safe registered engineers install, service and repair boilers and fit heating, plumbing and bathrooms across Merseyside.
Castle runs the business's Google Ads on a budget of £1,500 a month, putting it in front of homeowners when they search for a new boiler, a repair or a heating engineer.
That advertising now generates £50,000 a month in revenue, about £33 for every £1 spent.
The client
About West Derby Heating & Plumbing.
West Derby Heating & Plumbing describes itself as an independent, family-run business with “over 60 accumulative years” in the heating and plumbing industry. It trades from a shop on Eaton Road in West Derby and covers Merseyside and the surrounding areas.
The work covers boiler installation, servicing and repairs, full heating installations, gas safety checks and landlord certificates, radiators, plumbing, bathrooms and gas work. All its engineers are Gas Safe registered, it offers 0% finance on installations through a credit broker, and it holds a 4.8 rating from 68 Google reviews.

The brief
A small budget that had to pay for itself.
Local trade businesses can’t afford to treat advertising as an experiment. Every pound has to come back, and quickly. West Derby Heating & Plumbing set Castle a budget of £1,500 a month for Google Ads.
The opportunity was clear. When a boiler breaks, or a homeowner decides it’s time for a new one, they search for a local engineer on Google. The business that appears at that moment, with good reviews and an easy way to get a price, wins the job.
Google Ads
£1,500 a month, aimed at Merseyside homeowners.
Castle runs West Derby Heating & Plumbing’s Google Ads across the area the business covers. On a budget this size there’s no money to waste on people outside Merseyside, or on searches that would never become paid work.
Heating is a good fit for search advertising because demand is urgent and valuable. A homeowner looking for a boiler replacement isn’t browsing. They want a price, a date and someone they can trust in their home, and one new boiler can be worth more than a month of advertising.
The website
Why the clicks turn into jobs.
The advertising brings people to a website that makes the next step easy. The first thing visitors see is an instant quote: send a photo, answer a couple of questions, and an estimate comes back. They can also request a callback or call the shop on 0151 315 0010.
- Finance up front. 0% finance on installations takes the sting out of a large, unplanned bill.
- Proof on the page. A 4.8 rating from 68 Google reviews and Gas Safe registered engineers.
- No surprises. The site promises that once the quote is given, “the price is the price”.
- A real local business. A shop on Eaton Road and a free, no-obligation site survey.

The results
£50,000 a month from £1,500.
West Derby Heating & Plumbing’s Google Ads now generate £50,000 a month in revenue from a £1,500 monthly budget. That’s about £33 back for every £1 spent.
One month (£ thousands)
Over a year, that’s £18,000 of advertising behind around £600,000 of revenue for a family-run local business.
Takeaways
What other local trades can take from this.
- Advertise where the urgency is. Search catches people the moment they need you.
- Stay inside your patch. On a small budget, every click should come from your service area.
- Make the price easy to get. Instant quotes, callbacks and finance all lift the share of clicks that become jobs.
- Let reviews do the persuading. A strong Google rating makes every pound of advertising work harder.
See how we approach marketing for trades businesses.
FAQs
Questions about this case study.
How much revenue do West Derby Heating & Plumbing’s Google Ads generate?
£50,000 a month, from a Google Ads budget of £1,500 a month. That’s about £33 in revenue for every £1 spent.
Can a small Google Ads budget work for a local trade business?
Yes, if it’s focused. West Derby Heating & Plumbing’s £1,500 a month is aimed at homeowners across the area the business covers, and a website with instant quotes, finance and strong reviews turns the clicks into jobs.
Who are West Derby Heating & Plumbing?
An independent, family-run heating and plumbing business on Eaton Road in West Derby, Liverpool, with Gas Safe registered engineers covering Merseyside.
What does Castle do for West Derby Heating & Plumbing?
Castle runs the business’s Google Ads.
Results.
Local trade business?
Make a small budget work like a big one.
West Derby Heating & Plumbing doesn't outspend the national boiler firms. It out-focuses them. If you're a local trade and want your advertising to pay for itself, we'll show you where the jobs are.