You’ve finished a job on a Friday. You’re sitting in the van, you type “extension builder [your town]” into your phone, and your competitor is sitting right there at the top of Google. You’re nowhere. You’ve probably spent money on this already. A website. Maybe an SEO agency. A listing somewhere. And you’re still not showing up.
This happens to building firms constantly, and the reason is usually the same. The advice most builders receive about getting found online is too generic to be useful. What works for a restaurant or a hairdresser does not work the same way for a firm doing loft conversions and rear extensions. The fundamentals of SEO for local builders are specific to the trade, the sales cycle, and the way homeowners actually search for construction work.
Here is what actually moves the needle, and what you can safely stop paying for.
Your Google Business Profile Is the Most Important Thing You Own
Most building firms set up a Google Business Profile once, add a phone number and a couple of photos, and forget about it. That is roughly equivalent to putting up a sign outside your office and then never opening the door.
Your profile is the primary thing Google uses to decide whether you appear in the map pack, the three results that show at the top of a local search with the small map beside them. Those three positions get the majority of clicks. If you are not there, homeowners are calling your competitors.
The category setting is the most commonly wrong thing on a builder’s profile. Google offers several options: Builder, Construction Company, Home Builder, General Contractor. Most firms pick one at random during setup and never revisit it. If the majority of your work is domestic extensions and loft conversions, Builder is typically the right primary category. If you mostly do new builds, Home Builder fits better. Getting this wrong makes you less relevant for the searches you actually want.
Beyond category, fill in the services list completely. Extensions, loft conversions, kitchen renovations, garden rooms, garage conversions, listed building work, new builds. Whatever you do, name it. These terms feed directly into how Google matches you to searches.
Photos matter more than most builders realise. A profile with two blurry shots from three years ago loses to a competitor with twenty recent photos of finished work. Every time. Get to fifteen or twenty photos before you consider the profile properly set up, and then make one new photo per week a standing habit. Finished projects, work in progress, your team on site. Google rewards active profiles, and this is the easiest way to signal activity.
Reply to every review you receive. Good or bad. A brief, professional response to a critical review does more for your reputation than ignoring it. And a profile owner who engages with feedback signals to both Google and potential clients that there is a real, attentive business behind the listing.
Why Your Website Probably Isn’t Doing Much Work
A slow website that looks fine on a desktop but breaks on a phone is losing you enquiries every week. Most homeowners search for builders on their phones. According to research from Google on mobile search behaviour, the majority of local searches now happen on mobile devices, and users abandon sites that take more than a few seconds to load. If your site takes five seconds to load on a phone, a significant portion of visitors leave before they see anything at all.
That is fixable. But the more common website problem for builders is not technical. It is content.
Most builder websites have a homepage, an about page, a services page with a list of what you do, and a contact form. That is not enough to rank for location-specific searches, and it gives a homeowner very little reason to choose you over the next firm they find.
Location pages help, but only if they contain genuine content. A page that says “We are builders covering Guildford, Woking, Farnham, and Godalming” with nothing else is not a location page. It is a list. Google ignores it. A real location page talks about the type of work you do in that area, references local knowledge where relevant, and ideally includes a photo from an actual project in that location.
Project case studies are the most valuable content a builder can publish. A properly written page for a rear extension in Leeds, with before-and-after photos, a brief account of what the project involved, a rough cost range, and a completion date, does three things at once. It proves the quality of your work to a homeowner who has never met you. It gives Google keyword-rich, location-specific content it can rank. And it provides the social proof that a homeowner buying a £70,000 extension genuinely needs before picking up the phone.
Building firms that have ten or fifteen of these project pages indexed on their site consistently outperform firms with equivalent Google profiles but thin website content. It is not glamorous work to write them up. But it compounds over time.
Reviews: The Simple System That Most Builders Skip
Google reviews are the most important review type for your local search rankings. Checkatrade, TrustATrader, and similar platforms matter for trust once a homeowner is already comparing you to a shortlist. But for the ranking itself, Google reviews carry the most direct weight.
The simplest system that works is a text message sent within a week of final payment. Not an email. A text. Keep it short. Something like: “Really enjoyed working on your extension. If you have two minutes, a Google review would mean a lot to us. Here’s the direct link.” Most satisfied clients will do it if you make it that easy.
Volume matters. Recency matters more. A profile with eighty reviews, the most recent from eighteen months ago, looks less active than a profile with thirty reviews and four from the past month. Treat review generation as an ongoing habit, not a one-off push.
One thing to avoid: buying reviews, or asking friends and family who were not actual clients to post them. Google’s detection of fake reviews has improved significantly. A suspension of your Business Profile is genuinely difficult to recover from and can take your firm off the map entirely, sometimes for months.
Citations: What Matters and What Doesn’t
Citations are mentions of your business name, address, and phone number on other websites. Directories, trade associations, local business listings. Google uses the consistency of this information as a trust signal.
What matters is accuracy. Your business name, address, and phone number should be identical across Companies House, the Federation of Master Builders directory if you are a member, Yell, Bing Places, and a handful of other credible directories. Inconsistencies, even minor ones like “Ltd” versus “Limited” in your business name, dilute the signal.
There are services that will list you in “1,000 directories” for a monthly fee. For a UK building firm in 2025, this is largely a waste of money. The directories that carry meaningful weight for a construction business number in the dozens, not the thousands. Getting listed accurately in the right ones is a one-time task, not a recurring cost.
What to Do Yourself and What Is Worth Paying For
You can set up and maintain your Google Business Profile without paying anyone. You can take project photos, send review request texts, and write up project case studies. These are time-consuming but not technically complex, and they represent the majority of what drives local search results for most building firms.
Where outside help tends to be worth it: technical website work (speed, mobile performance, structured data), proper location pages written with search intent in mind, and any work around getting your firm mentioned in local press or construction publications. These either require specific technical knowledge or significant writing time, and the output directly affects your rankings in ways that are hard to replicate through DIY effort alone.
A realistic budget for a proper local SEO programme for a small to mid-sized UK builder sits somewhere between £600 and £1,800 per month, depending on how competitive your area is and how much ground you are starting from. Anyone quoting significantly less is probably not doing much. Anyone promising page one in thirty days is not being straight with you. Meaningful movement in the map pack typically takes around three months. Organic rankings take six to nine months of consistent work.
The Mistakes That Quietly Cost Builders Work
Thin location pages. Ignored photos. No review system. These are the most common issues, and they are all fixable.
The less obvious one is letting an agency manage your Google Business Profile under their own account login. If they own the profile and you part ways, they take it with them. Your profile, your reviews, your history. Always own your own login credentials, even if someone else is managing the day-to-day updates.
The other mistake is spending on things that feel like marketing without any way of measuring whether they work. If you have no way of knowing whether your enquiries are coming from Google, Checkatrade, or word of mouth, you cannot make sensible decisions about where to invest. Google Business Profile Insights and Google Search Console are both free and give you enough information to understand where your traffic is actually coming from.
Start Here
If you are starting from scratch, the order matters. Google Business Profile first. Get the category right, fill in services, upload fifteen photos, set up your review text system. Then address the website: project case study pages, proper location pages, mobile speed. Technical and content work comes after the profile is solid, not before.
It is not a fast process. But the building firms that treat online visibility as a system, rather than something they handed to an agency once and stopped thinking about, are the ones consistently appearing at the top of local searches. The work is not complicated. It just needs to be done properly, and kept up.
