Construction Marketing ROI Benchmarks (What Good Actually Looks Like)

Three honest disclaimers. First, construction marketing data is much harder to come by than SaaS data — there is no Scale Venture benchmark report or Pavilion survey that cleanly covers UK mid-market construction. Second, what data does exist (RICS, CIOB, Construction News surveys) is self-reported and biased toward firms willing to fill in surveys. Third, this document is sourced from our own client book of 30+ construction and ConTech firms plus interviews and informal comparisons with peer agencies. Treat it as directionally useful, not a peer-reviewed study.

With that said, the numbers below are more honest than almost any benchmark document you'll find from an industry body, because we don't gain from inflating them.

UK mid-market construction firms (£10m-£200m turnover) typically spend:

• Contractors (Tier 2/3 main contractors): 0.5-1.2% of revenue.
• ConTech software companies: 12-25% of revenue (standard SaaS band).
• Consultancies (QS, project management, M&E): 1.5-3.5% of revenue.
• Specialist subcontractors: 0.4-1.0% of revenue.
• Developers: 0.8-2.0% of revenue, concentrated around launches.

For context, cross-industry B2B averages run 6-11% of revenue. Construction is structurally under-marketed — partly because margins are thin and there's little slack, and partly because the industry is reputation-driven in ways that don't easily map to marketing spend.

Typical spend allocation for a £50m-turnover contractor or £10m-turnover ConTech SaaS, expressed as share of total marketing budget:

• Trade shows and events: 30-45% for contractors, 20-30% for ConTech.
• Digital advertising and content: 20-35%.
• Sales enablement (collateral, decks, case studies, CRM tooling): 15-25%.
• PR and trade press: 5-12%.
• Brand and design: 5-10%.
• Sponsorship of associations and awards: 3-8%.

The under-served category in most budgets is LinkedIn-specific investment. Many firms bundle it into "digital" and spend a fraction of what the channel would reward. The firms that carve LinkedIn out as its own line item and give it a dedicated £2-5k/month budget consistently see stronger pipeline outcomes than firms spending 3-4x that amount on unfocused digital.

Rough ROI ranges we see across our book:

• LinkedIn founder-led content (year 2+): 6-15x revenue:spend. Best channel at mid-market scale.
• Trade shows: 1-4x typical, occasionally higher for well-matched shows.
• Google Ads: 1-3x for most construction keywords. Increasingly poor as CPCs rise and intent quality falls.
• LinkedIn paid (lead-gen ads): 2-5x when retargeting warm audiences; 0.5-1.5x when targeting cold.
• SEO content (organic): 3-10x over 18-36 months, zero or negative in year one.
• Cold email: 0.5-2x. Declining channel in UK construction.
• Partnerships and referrals: 8-20x when structured. Under-invested in by most firms.
• PR and trade press: Not a pipeline channel. Measure on reputation and recruitment, not revenue.

Customer acquisition cost benchmarks we target with clients:

• ConTech SaaS, ACV £5-15k: CAC £1,200-£2,500 per closed-won.
• ConTech SaaS, ACV £20-60k: CAC £3,500-£8,000.
• ConTech SaaS, ACV £100k+: CAC £15,000-£40,000.
• Construction services (consultancy, specialist sub): CAC 3-6% of first-year fee.
• Main contracting (Tier 2/3): CAC is mostly relationship and BD cost, less measurable — typically 1-2% of contract value on won jobs.

If your CAC is running 2x or more above these ranges, something is structurally wrong with the channel mix. Usually the culprit is over-investment in one weak channel (unfocused Google Ads, cold email, or an SDR team without content support).

For a ConTech or construction services firm at £1-10m revenue, the allocation that consistently outperforms industry average:

• LinkedIn programme (content + outreach + selective paid): 30-40%.
• One high-match trade show and associated activation: 15-20%.
• SEO and website content: 10-15%.
• Sales enablement (case studies, decks, collateral): 15-20%.
• Brand, design, and PR: 10-15%.
• Test budget (experimental channels): 5-10%.

This is deliberately heavy on LinkedIn and light on trade shows relative to the industry default. We've run it across enough client books now to be confident it's the right shape for the current market.

So what: Construction marketing is chronically under-measured and over-allocated to legacy channels. If you run the audit above on your own spend, you will almost certainly find 20-40% of your budget is in low-ROI channels — and redirecting it toward LinkedIn and well-chosen partnerships would produce a step-change in pipeline without any extra spend.