Facebook Ads Budget Guide for Home Improvement Companies

The number one question we hear from home improvement companies considering Facebook ads is simple: how much do I need to spend? It is a fair question. Nobody wants to throw money at something without knowing what they will get back.

The answer depends on your trade, your area, and your goals. But we can give you clear benchmarks based on what UK window, door, conservatory, extension, and garden room companies actually spend and actually get back. No vague "it depends" - real numbers at each budget level.

The minimum viable budget

Facebook's algorithm needs data to work. It shows your ad to a batch of people, measures who clicks and who enquires, then uses that information to find more people like them. With too little budget, the algorithm never collects enough data to optimise. Your cost per lead stays high and your results are inconsistent.

The practical minimum for a home improvement company is £500 per month in ad spend. That works out to roughly £16 per day. At this level, you can expect 10 to 20 leads per month depending on your trade and location.

£500 is a testing budget, not a scaling budget. It is enough to answer the question "is Facebook advertising worth it for my business?" If the leads convert, you scale up. If they do not, you have only risked a few hundred pounds finding out.

Below £500 per month, results become unreliable. The algorithm does not have enough impressions to learn, and you might go days without a single lead. This leads to the false conclusion that "Facebook ads don't work" when in reality the budget was just too small to give the platform a fair test.

Budget tiers: what to expect at each level

Notice that cost per lead actually decreases as you spend more. That is because higher budgets give the algorithm more data to optimise with, and you can run multiple audience segments and creative variations simultaneously. A £3,000 campaign is not just "more of the same" as a £500 campaign - it is fundamentally more efficient.

What about the ad spend vs management split?

These numbers are ad spend only - the money that goes directly to Facebook. On top of this, you need to factor in management costs. If you run the ads yourself, that cost is your time. If you hire an agency, expect to pay:

• Budget agencies: £300-500/month (limited service, often templated)
• Specialist home improvement agencies: £500-1,500/month (sector expertise, custom creative)
• Full-service agencies: £1,500-3,000/month (strategy, creative, reporting, landing pages)

The total investment is ad spend plus management. A typical mid-range setup for a growing home improvement company is £1,500 ad spend plus £1,000 management, totalling £2,500 per month. At that level, you should be generating 35 to 60 exclusive leads per month.

How to calculate your ROI

ROI for Facebook ads is straightforward to calculate if you track where your customers come from. Here is the formula:

ROI = Revenue from Facebook customers ÷ Total Facebook cost (ad spend + management)

Let us work through a real example. You are a conservatory company spending £2,000 per month total on Facebook advertising (£1,200 ad spend + £800 management). You generate 40 leads per month. You close 25% of them - that is 10 sales. Your average conservatory sells for £22,000.

Revenue: 10 × £22,000 = £220,000
Cost: £2,000
ROI: £220,000 ÷ £2,000 = 110x

Even if we halve those assumptions - 20 leads, 15% close rate, £15,000 average sale - the ROI is still over 20x. The maths works for high-value home improvement products because the gap between the cost of a lead and the value of a sale is enormous.

For a detailed breakdown of lead costs by trade, see our companion guide.

Budget mistakes that waste money

Spending too little

This is the most common mistake, counterintuitive as it sounds. A budget of £200 per month sounds cautious and sensible. In practice, it means the algorithm never learns, your leads are sporadic, and you conclude that Facebook ads do not work. You have spent £200 per month for three months (£600 total) and have nothing to show for it. That same £600 concentrated into one month at a higher budget would have generated 15 to 25 leads.

Not tracking ROI

If you do not know which customers came from Facebook, you cannot calculate ROI, and you cannot make informed decisions about budget. It does not need to be complicated - a column in a spreadsheet marked "Source: Facebook" is enough. But without it, you are flying blind.

Cutting budget after month one

Month one is always the most expensive. The algorithm is learning. Your cost per lead will be higher than in months two and three. Companies that cut their budget after a disappointing first month never see the improvement that comes with optimisation. Commit to three months at a consistent budget before making big changes.

Splitting budget across too many campaigns

If you have £1,000 per month, do not split it across five campaigns at £200 each. None of them will have enough budget to optimise. Better to run one or two well-funded campaigns than five underfunded ones. Consolidate your budget and let the algorithm work.

When and how to scale

The right time to scale is when you have consistent data showing a positive ROI. Typically, that is after two to three months of running at your initial budget. Here is how to scale without breaking what is already working.

Increase by 20-30% at a time

Do not double your budget overnight. Facebook's algorithm recalibrates when you make large changes, and a sudden doubling can temporarily spike your cost per lead. Increase by 20 to 30 percent, let it stabilise for a week, then increase again if results hold.

Scale what works, test what might

Put additional budget behind your best-performing campaigns and audiences. Use a smaller portion (10 to 20 percent) to test new audiences, new creative, or new locations. This way you are scaling proven results while continuously finding new opportunities.

Know your capacity

There is no point generating 100 leads a month if you can only handle 30. Scale your advertising in line with your capacity to follow up, quote, and deliver. Leads that are not followed up within an hour are largely wasted regardless of how good the ads are.

Management costs: DIY vs agency

Running ads yourself

It is possible to run your own Facebook ads. Meta Ads Manager is free to use and there are plenty of guides online. The cost is your time - expect to spend 5 to 10 hours per week learning the platform, creating ads, and monitoring results. The risk is that without experience, you will make mistakes that cost you more in wasted ad spend than an agency would have charged.

Hiring an agency

A good agency brings experience, tested creative approaches, and the ability to optimise campaigns faster than someone learning from scratch. The cost is the management fee. For home improvement companies, a specialist agency that understands your market will outperform a generalist every time.

The key question is: will the agency's expertise save you more in wasted ad spend than their fee costs? In most cases, yes - especially in the first three months when the learning curve is steepest.

If you want to see what a properly managed campaign would look like for your business, get your free ad audit. We will show you the budget, the expected leads, and the projected ROI for your specific trade and area.