Every budget conversation I have follows a similar pattern. Someone tells me their current PPC spend, winces slightly, then asks what local SEO would cost instead. It’s a fair question, and it deserves a proper, specific answer rather than the vague “it depends” that gets thrown around far too often in this industry.
I’ve run marketing budgets on both sides of this equation. At a boiler and solar installation business that scaled past £65 million in turnover, I managed PPC spend exceeding £125,000 a month alongside our organic strategy, so I’ve felt the pressure of watching cost per click climb every winter while trying to justify every pound to the board.
This post is the honest budget breakdown I give clients now, with real UK figures, not the guesswork most agencies default to.
What Do UK Businesses Actually Pay For SEO In 2026?
Pricing across the UK market has shifted noticeably over the last two years, and it’s worth understanding where you sit before you commit to anything. At the bottom end, budgets under £500 a month typically buy automated, template-based work that rarely produces measurable results. Most UK agency guides now converge on a genuine floor of around £750 to £1,000 a month for anything strategic.
What Does Each Budget Tier Actually Deliver?
Broadly, the UK market breaks down like this for a home improvement or trade business:
- Local, single-location businesses: roughly £750 to £1,500 a month, covering Google Business Profile optimisation, core service page work, local citations and monthly reporting
- Regional businesses covering multiple towns: around £1,250 to £2,500 a month, adding ongoing content, location page rollout, internal linking and review support
- Multi-location or national operators: typically £2,000 to £5,000 a month, covering broader content strategy, technical support at scale, and reporting tied directly to lead quality rather than just rankings
- Enterprise and highly competitive national campaigns: £5,000 to £10,000 or more a month, involving dedicated teams and integration across multiple channels
For a business installing boilers, solar panels, heat pumps or EV chargers across several regions, most sensible budgets land somewhere in that £1,500 to £3,500 a month range, depending on how many locations and service lines you’re covering.
Why Do Renewables And Heating Keywords Cost More To Rank For?
This sector is genuinely harder than most. You’re not just competing against other local installers, you’re competing against national comparison giants like MoneySuperMarket, GoCompare and uSwitch, plus large franchise operators with years of accumulated domain authority.
That competitive pressure is exactly why generalist agency pricing doesn’t always map cleanly onto this industry, and why the senior-level expertise needed to compete properly tends to sit at the higher end of the typical pricing range rather than the entry level.
What Percentage Of Marketing Budget Should Go To SEO?
A commonly cited guideline across UK marketing budgeting resources suggests allocating somewhere between 5% and 10% of overall marketing spend to SEO for most small and mid-sized businesses, rising higher for competitive or e-commerce-heavy sectors.
For installation businesses specifically, where the value of a single converted lead can run into thousands of pounds, I generally encourage clients to think less about a fixed percentage and more about the opportunity value sitting behind specific keywords.
How Should You Split Your SEO Budget Across Activities?
Within whatever total figure you land on, a sensible allocation typically looks like this: technical SEO and site health taking up 20% to 30%, ongoing content creation for service and location pages taking 30% to 40%, link building and authority work at 20% to 30%, and local SEO plus reporting making up the remainder.
Increasingly, I’d also flag that a portion, often cited as 15% to 25% of the overall budget, needs to go towards answer engine and AI visibility work, since that’s no longer a nice-to-have layered on top, it’s part of how modern search actually works.
How Does SEO Cost Compare To Paid Advertising Long Term?
This is where the numbers get genuinely persuasive, and it’s the comparison I always encourage stakeholders to run properly before deciding. In the solar and renewables space specifically, Google Ads clicks commonly run between £80 and £250 per lead, converting at roughly 10% to 15%, which puts effective cost per acquisition somewhere between £600 and £800.
Organic search, once established, delivers leads at close to zero marginal cost with conversion rates often sitting at 25% to 30%, bringing effective acquisition cost down to somewhere between £200 and £400.
What Kind Of Return Can Genuinely Well Executed SEO Deliver?
I’ve seen documented cases in the solar sector where a monthly SEO investment of around £5,000 produced over 500 organic calls a month within six months, working out to roughly £9 per call. Modelled against a typical close rate and average installation value, that kind of result can produce a return on investment running into the thousands of percent over the following year.
I’d treat any single case study with healthy scepticism, results vary enormously by market and starting position, but it illustrates why the initial spend on SEO looks expensive in isolation and cheap once you measure it against what it actually replaces.
What Happens If You Spend Too Little On SEO?
This is the mistake I see most often, and it’s an expensive one. A business commits £400 or £500 a month, expects national-level results, and ends up disappointed within a few months because that budget simply can’t fund the depth of content, technical work and authority building needed to compete against national comparison sites.
Underinvestment doesn’t just slow results, in a genuinely competitive sector it can mean never generating enough momentum to rank at all, which makes the spend a pure sunk cost rather than a slow-building asset.
What Happens If You Overspend Without A Proper Strategy?
The opposite mistake is just as common and often more expensive. Businesses sometimes throw £5,000 or £6,000 a month at SEO without a clear strategy behind it, essentially paying for volume of activity rather than a coordinated plan targeting the keywords and locations that actually convert.
Spend without direction produces content and links, but it doesn’t necessarily produce leads. The budget matters, but only once it’s attached to a genuine roadmap built around your specific service lines, coverage areas and competitive landscape.
How Do You Know If Your SEO Budget Is Actually Working?
Cost alone tells you very little. What matters is tracking cost per qualified lead from organic search specifically, not just overall traffic or ranking positions, which look good in a report but don’t necessarily translate into booked jobs.
A realistic budget should be reviewed against genuine business outcomes, enquiries, booked site visits, and ultimately completed installations, on at least a quarterly basis, adjusting spend towards whatever service lines and locations are showing the strongest return.
Why Does Budget Consistency Matter More Than Budget Size?
I’d rather work with a client committing £1,500 a month consistently for eighteen months than one committing £4,000 for three months and then pausing. SEO compounds, and stopping and starting repeatedly resets momentum that took real money to build in the first place.
This is exactly why we structure our engagements at Essheo around twelve and eighteen month horizons rather than short bursts, because that’s genuinely how the economics of this channel work, not because it’s convenient for us as an agency.
What Should You Actually Budget For Your Business?
If I had to give a single practical number for a genuinely competitive UK boiler, solar, heat pump, air conditioning or EV charger installation business covering multiple regions, I’d point most towards somewhere between £2,000 and £4,000 a month as a realistic, defensible starting point, scaling upward as coverage and ambition grow.
That figure buys genuine strategic work, senior-level input, and enough consistent output to compete properly, rather than the thin, templated activity that budgets under £1,000 tend to produce in this sector.
Every senior person working on our accounts at Essheo has spent eight or more years in genuinely hard to rank industries, and the strategies we’ve designed and implemented within our SEO service for home improvement companies have contributed to over £45 million in combined client revenue across the last two years alone. We know what a realistic, effective budget looks like in this sector because we’ve operated inside it, not just advised on it from the outside.
Ready To Get A Realistic Budget For Your Business?
Guessing at an SEO budget, or copying whatever a competitor is rumoured to be spending, is one of the most common ways businesses waste money in this sector. What actually works is a budget built around your specific competitive landscape, your service lines and the genuine opportunity sitting behind the keywords your customers are searching.
I set Essheo up to give business owners and marketing decision makers exactly that, a properly costed, realistic plan rather than a generic package pulled off a pricing page. We’ll look honestly at your current spend across paid and organic channels, your competitive position, and give you a specific figure that reflects what it will genuinely take to compete in your market.
Book a strategy call with me today and let’s work out exactly what your business should be investing in SEO.