Best Facebook ads agencies for extension builders: five compared
An extension is the biggest cheque most homeowners write after the house itself. They think about it for a year, save photos of other people's kitchens-diners for months, and then enquire with three builders in one evening. The agency that helps you win that work needs to understand the long sale, not just the click. Five that work with extension builders, ranked.
What counts in the extension market
Lead volume is the wrong metric. An extension builder doing eight projects a year needs perhaps twenty serious enquiries, not two hundred tyre-kickers asking what a single-storey costs. So we favoured agencies that qualify, that follow up over weeks, and that make the quote stage look professional.
Each agency here either names extensions, renovation builders or remodelling, or has built for a building firm. We ranked on fit for extension work, then price transparency, then published proof. All details are from the agencies' own websites.
If you are weighing an instant form against a proper page for a £40,000 enquiry, the instant forms versus landing pages comparison will settle it quickly.
1. Grow My Trade
Best for: Extension builders with a showroom or design studio selling kitchen-led extensions
Grow My Trade is built exclusively for kitchen, bedroom and bathroom businesses, so it is here for the extension builder whose projects are really kitchen-diner projects sold from a showroom. Its 90-day showroom growth system bundles photography and videography, testimonials and case studies, social media management, Meta advertising, a CRM with automated follow-ups, lead qualification and monthly performance reviews.
Clients own all photo and video assets, and the agency aims to be live within 21 days, nationwide with no travel fees. Content is the strength: a well-shot open-plan extension is the most powerful advert an extension builder can run.
Pricing is not published and proof is limited to one kitchen showroom video win and Google reviews from kitchen retailers. Founder is named only as Harry. A pure extension builder without a showroom is outside its stated market.
2. Riley Marketing
Best for: Extension builders running one or two crews who want a professional site, reviews, CRM and branded quotes on a fixed fee before any ad spend
Riley Marketing names builders on its trade list and has built the site for SET Building & Brickwork, an Essex building firm. Its foundational growth system costs one fixed monthly fee (£149 a month at time of writing): an SEO-focused website with service and location pages, Google Business Profile optimisation, Google review automation including reactivating past customers, missed call text back, and a CRM with lead status tracking and branded custom quote pages on your own domain.
Two of those pieces are made for extension work. The CRM, because an extension enquiry lives for months between first contact, site visit, drawings and decision, and a Facebook inbox is no place to manage that. And the branded quote pages, because when a homeowner lays three quotes side by side, the one with photos of similar extensions, clear stages and your reviews underneath does not look like the others. Facebook and Instagram ads, Google Ads and local SEO are add-ons once the base is working.
The terms remove the usual agency risk: built up front before you pay, no setup fee, unlimited revisions, cancel any time. Founder Tom Riley works with clients directly, bringing ten years in search and lead generation, a stint leading organic growth at an insurtech and his own lead generation websites.
A design-and-build company with a sales team and a six-figure marketing budget will outgrow it. A builder doing six to ten extensions a year gets a complete lead and quoting system here for less than the cost of one skip. There is more in is Riley Marketing right for Facebook ads.
3. Home Improvements Digital Marketing
Best for: Established extension and renovation builders in Scotland who want a full marketing system rather than ad-hoc leads
Home Improvements Digital Marketing, led by Ben Laing, is the one agency on this list that puts extension and renovation builders first in its trade list, alongside kitchen fitters, bathroom fitters, multi-trade companies, loft and garage conversions and asbestos removal. Its case study clients are in Glasgow, Edinburgh and Fife.
The pitch is a reliable digital marketing system for established builders, explicitly rejecting high volumes of random leads in favour of quality enquiries. Services cover SEO, Google Ads, authority video content, multiple conversion-focused websites, social media marketing, online reputation management, lead filtering and qualification, and monthly strategy and reporting. Packages are tiered done-for-you with names visible but no prices.
It publishes revenue-growth style results for renovation and extension builders, an asbestos firm and a loft and garage conversion company, which is more extension-specific proof than anyone else here.
4. TradesGrow
Best for: Extension builders who want Facebook, Google PPC and local SEO from one Welsh agency
TradesGrow in Cardiff lists builders among its core trades and offers web design, paid Google advertising with call tracking, local SEO covering Google Business Profile, citations and review generation, Facebook ads and done-for-you lead generation.
Published case studies are for roofers, a boiler installer, a landscaper and a driveway company rather than extension builders. The agency positions against clients' previous agencies with 'no sales pressure, just results' and attaches a 'results vary' caveat to its headline growth claims. A free strategy call and audit is offered, lead-gen offers say first leads free and the portfolio shows indicative cost-per-lead figures. Pricing tiers are on a separate page.
5. Rated Media (Premilead)
Best for: Remodelling firms that want extension enquiries arriving as booked site visits
Rated Media names remodelling and other high-ticket home improvement among its sectors, which puts extension work in scope. It positions as a growth partner not a typical agency, prioritising qualified appointments and booked jobs over lead volume, with leads exclusive and never resold.
Paid social lead generation is wrapped in smart forms, landing pages, AI voice agents, automated booking, AI follow-up and no-show prevention, and post-estimate follow-up. For extension builders who do a site visit before every quote, automated booking is useful. Fees are not published; clients typically spend £1k to £3k-plus a month on ads paid direct to platforms. No case studies are published and testimonials appear generic. Trustpilot reviews exist under the Premilead name.
Extension builders' comparison
| Agency | Extension-specific proof | Handles long follow-up | Quote presentation | Fee | Suits |
|---|---|---|---|---|---|
| Grow My Trade | Kitchen showroom only | CRM, automated follow-ups | Not stated | Not published | Showroom design-and-build |
| Riley Marketing | Built SET Building & Brickwork site | CRM with lead status tracking | Branded quote pages | £149/month fixed | One to two crews |
| Home Improvements Digital Marketing | Extension builder case studies | Lead filtering, monthly strategy | Not stated | Not published | Established firms, Scotland |
| TradesGrow | Other trades | Call tracking, review generation | Not stated | Pricing page | Small to mid |
| Rated Media | None | AI booking, post-estimate follow-up | Not stated | Not published | Remodelling firms with sales process |
Choosing as an extension builder
Small builder doing a handful of extensions a year: Riley Marketing. The fixed fee gives you the CRM and quote pages that decide long-cycle work, and ads go on top when the foundations are live.
Established firm in Scotland wanting a full system with extension-specific results to look at: Home Improvements Digital Marketing. Design-and-build with a showroom: Grow My Trade. Want Facebook and Google together from one agency: TradesGrow. Need enquiries to arrive as booked visits and have a salesperson to work them: Rated Media.
Whoever you pick, the homeowner who enquired in January and went quiet is probably still planning. Retargeting for tradespeople covers how to stay in front of them for the six months an extension decision takes, and the builders' agency roundup covers the wider building trade.
Frequently asked questions
Do Facebook ads work for extension builders?
Yes, because homeowners plan extensions for months and respond to photos and video of finished projects. The key is qualifying enquiries and following up over a long cycle rather than chasing volume.
What should an extension builder budget for Meta ads?
As a worked example, £30 to £50 a day, around £900 to £1,500 a month, is typical for a firm wanting a steady flow of serious enquiries. Fewer, better leads is the goal.
Which agency has extension builder case studies?
Home Improvements Digital Marketing publishes results for renovation and extension builders. Riley Marketing has built a site for an Essex building firm. The others publish results in other trades or none.
Should I use a landing page or an instant form for extension leads?
A landing page with your portfolio, process and reviews almost always produces better extension enquiries than an instant form, even if it produces fewer of them.