Do you need a construction marketing agency? A guide for subcontractors who win work on tenders
What marketing for construction companies means when the company is a subcontractor, when you need an agency and when you do not, six questions to ask and what it should cost.
- Most construction marketing agencies sell to housebuilders, developers and product manufacturers; very few understand how a subcontractor wins work, which is through tenders, frameworks and supply chains rather than campaigns.
- A subcontractor usually does not need a marketing agency. It needs a website that passes procurement checks, a monthly plan that keeps it current and, sometimes, targeted paid search.
- Six questions separate an agency that can help from one that cannot, starting with: show me a subcontractor site you built where the accreditations are written out.
- Fair prices in 2026: £3,000 to £6,000 for a website, £250 to £500 a month for management, £300 to £500 a month for Google Ads management plus spend. Retainers of £1,500 a month and up are for brand marketing, not tender work.
- Measure any agency on invitations to tender and packages won, not on traffic.
Search “construction marketing agency” and page one is nine established firms with fifteen to thirty years in the sector. They are good at what they do, and what they do is mostly housebuilder brands, developer launches, product manufacturers and trade press. A subcontractor who hires one for marketing gets a brand refresh and a LinkedIn plan, and keeps winning work the way it always did: through people. This guide is about what marketing for construction companies actually means when the company is a subcontractor, when you need an agency, when you do not, and how to choose one if you do.
How subcontractors actually win work
Through supply chains and frameworks. A main contractor keeps a register of approved firms, procurement searches it for a trade and value, and invitations to tender go to the firms on the list. The Common Assessment Standard sets what the register asks for; Constructionline’s Gold level is where it sits; the Procurement Act 2023 has opened frameworks to new entrants and pushed 30-day payment down the chain since February 2025. None of that is marketing in the agency sense. It is evidence, presented so buyers and AI tools can verify it. The supply chains guide sets out the steps.
When a subcontractor does not need an agency
- Your work comes through two or three contractors and you have no capacity for more. Fix the website so their procurement teams can verify you, and stop.
- You are under ten staff. Build the twelve elements in the construction website guide and run the free Tender Check each quarter.
- You want a brand. Spend the money on photography of your crews and sites instead; buyers trust that more than a logo.
When one earns its fee
- You tender regularly and lose invitations you never hear about, because buyers and AI tools cannot find or verify you. That is a website and search problem and the fix is structural.
- You are moving into a sector or region where nobody knows you, and need to be found and named there before the first tender.
- You have the capacity for two or three more packages a year and no time to do the work in this guide yourself.
Six questions to ask any agency
- Show me a subcontractor website you built where the accreditations are written out, with level and expiry, and linked to the registers.
- What is in a case study you write, and will it carry a value band, a programme and a named referee?
- What have you set up for AI search on a construction site, and can I see it?
- Is the price fixed and the delivery date agreed before you start?
- Who owns the domain, the hosting and the logins?
- What do you report each month, and does it include invitations to tender?
If the answers are a design portfolio, a content calendar and a traffic chart, you are talking to a marketing agency and you are a procurement problem. Keep looking.
What it should cost
A website from £3,000 to £6,000. Monthly management, including SEO, AI visibility testing and keeping accreditations current, from £250 to £500. Google Ads management from £300 to £500 a month plus the spend, with no minimum term. Anything above that is brand marketing, and for a subcontractor it is money that should go on plant. Our own prices are on the pricing page, and the cost guide explains what should be inside any quote.
How to judge the result
Not by traffic, rankings or followers, which an agency can move without a single tender arriving. By invitations to tender you would not otherwise have received, and packages won. One groundworks package for a regional housebuilder is commonly worth £300k to £1m. That is the unit any agency fee should be measured in. Construction recorded 3,866 insolvencies in the year to August 2026; the firms that get through a downturn are the ones that are on the list when the tender goes out.
What to do this week
- Write down the last five tenders you were invited to and how each buyer found you. That is your marketing plan.
- Run the free Tender Check and send the result to whoever looks after your website.
- If you talk to an agency, ask the six questions and get the answers in writing.
Questions this raises
What does a construction marketing agency do?
Most work for housebuilders, developers and product manufacturers on brand, campaigns, trade press and social media. Few work on the tender, framework and supply chain route that subcontractors win work through.
Does a subcontractor need marketing at all?
It needs to be findable and verifiable by procurement teams and AI tools, which is a website and search job rather than a campaign. Beyond that, marketing spend is usually better put into photography, reviews and case studies.
How much do construction marketing agencies charge?
Retainers of £1,500 to £5,000 a month are typical for brand and campaign work. For a subcontractor, a website from £3,000 to £6,000 and a monthly plan from £250 to £500 covers what buyers actually check.
Is Groundproof a construction marketing agency?
No. We build and maintain websites for construction subcontractors and make them visible to buyers and AI tools. We do not do brand, social media management or PR, and we say so.
See where your own website stands.
The free Tender Check scores your site on the four stages buyers and AI tools check before they shortlist a subcontractor. Three minutes, your result straight away and a personal review within one working day.
