London marketing agency, since 2011

Marketing for the built environment, done properly.

You do good work. We make sure the right people see it, trust it and pick you: on the tender list, on the drawing and on Google.

  • Built environment only
  • 30 day rolling contracts
  • 315% more organic traffic for Terrazzo Tiles
Entrance passage in green glazed brick
Pale stone corner office building on a London street
Concrete foyer with a black stair, seen from above
Corner of a clad building with timber louvres
Who we are

Cornerstone is a London marketing agency that works only with the built environment. We started in 2011. Today we build your site, grow your visibility and photograph and film your projects, all pulling in one direction.

  • Terrazzo Tiles
  • Derwent London
  • Oktra
  • Equitone
  • OCL
  • English National Ballet
  • Original BTC, British lighting manufacturers
  • Roundhouse
  • Business Design Centre
  • The Trampery
  • Telling Architecture
  • Flannels
  • Benchmark Scaffolding
  • Horwich Carpets & Interiors
  • P&P Window, Door and Glass Solutions
  • Castleforge Partners
  • RemoveALL London
  • Bluebook
What do you need?

Start with the problem. We bring whatever fixes it.

Book a call
Perforated metal facade panels in a triangle pattern
Done with
  • Specification content
  • Technical SEO
  • Product photography
  • Trade press

1 For manufacturers and materials brands

Get specified, not just quoted

Being named on the drawing early is worth far more than being priced by a contractor late. We make your data, drawings and proof easy for an architect to find and use.

Site worker in hi-vis and a hard hat fitting a window frame

2 For contractors, fit-out and M&E

Get shortlisted and win the pitch

Done with
  • Case studies
  • Photography
  • 360 tours
  • Website

Before a buyer calls you back, they check you out online. We give them the case studies, photographs and website that remove the doubts.

Pale modern building between red and ochre towers
Done with
  • SEO
  • AI search
  • Google Business Profile

3 For every built environment firm

Be found first, on Google and in AI answers

Good firms lose to weaker competitors simply because customers cannot find them. We get you ranking on Google and named in answers from ChatGPT and Google's AI Overviews.

Learn more
Trusted by Terrazzo Tiles
Fitted office interior with a white desk and exposed services ceiling

4 For contractors, architects, interior designers

Turn finished projects into the next job

Done with
  • Photography
  • Video
  • 360 tours
  • Project write-ups
  • Press

Brilliant work often goes unseen once the job is handed over. We photograph it, film it, write it up and put it in front of the people planning their next project.

Brick townhouses at dusk with warm lit windows

5 For developers and commercial property

Sell or let the space sooner

Done with
  • Development websites
  • Photography
  • Virtual tours
  • Campaigns

When every listing looks the same, the space that is shown best goes first. We build the website, shoot the photographs and tours, and run the campaigns that fill it.

White diamond-pattern facade with a few black diamonds
Done with
  • Google Ads
  • Paid social
  • Landing pages
  • Tracking

It is easy to spend a budget on people who were never going to enquire. We run campaigns that bring real enquiries, and we track them so you can see which ones did.

Why Cornerstone

No lock-in, one industry, digital and creative together.

  • 30 daysRolling contracts

    No long lock-ins. We keep you by earning it every month.

  • OneIndustry, nothing else

    Construction, manufacturing, fit-out, property and design. We know how it buys.

  • 2011Where our roots go back

    We have been marketing the built environment longer than most.

  • BothDigital and creative

    Websites, search, ads and email, and the photography, video and 360 tours that show the work off.

Read our story

Two scaffolders at work on scaffolding against a red brick wall
Industries

Who we work with.

Marketing built around how the built environment actually buys: long cycles, specifiers and procurement, high-value contracts.

How it works

From first call to work you can measure.

Start with a call
  1. 1

    A discovery call

    Tell us what you are trying to win. We tell you honestly whether we can help, and how.

    • No obligation
    • No hard sell, no jargon
  2. 2

    We find what is holding you back

    A proper review of your website, content and search visibility, to find your biggest, fastest wins.

    • Website and search review
    • What your customers look for
  3. 3

    We do the work

    We build your site, grow your visibility and shoot your projects, all pulling in one direction.

    • You know who is on your account
    • Honest timelines from the start
  4. 4

    You see what it did

    We keep it easy to follow, so you always know what we are doing and why.

    • Real buying intent, not vanity metrics
    • 30 days at a time, never locked in
In their words
“Working with Cornerstone was a game-changer for our business. Their strategic approach to e-commerce SEO propelled our online visibility and significantly boosted our sales.”
Terrazzo Tiles
DanielFounder, Terrazzo Tiles
Read the case study
Questions

Questions we get asked.

Straight answers on how we work and who we work with.

Ask us something else
What does Cornerstone Group do?

Cornerstone is a digital-first marketing agency for the built environment. We build high-performance websites and run SEO, AI SEO, Google Ads and paid social, email, digital PR and conversion optimisation for construction, manufacturing and design brands, and we shoot the photography, video and 360 tours that show the work off.

Which industries do you work with?

We work exclusively with the built environment: construction, building materials, architectural materials, manufacturing, building services, interior design, fit out, furniture, and energy and sustainability brands.

What is AI SEO, and why does it matter?

AI SEO, also called generative engine optimisation, is the work of getting your brand understood and cited by AI answers like ChatGPT, Google's AI Overviews and Perplexity. As more people get answers straight from AI instead of clicking search results, being part of those answers is becoming as important as ranking on Google.

Do you tie clients into long contracts?

No. We work on a strict 30 day rolling agreement. There are no long lock-ins, so we have to earn our keep every month.

Where is Cornerstone based?

We are based at 86-90 Paul St, London EC2A 4NE, and work with built environment brands across the United Kingdom.

How do I get started?

Book a no-obligation discovery call. We will tell you honestly whether we can help, and how, with no hard sell and no jargon.

Talk to the founder

Book a call with Theo.

Tell him what you are trying to win. He will tell you honestly where your biggest, fastest wins are. No hard sell, no jargon.

Book a growth consultation

Or send a message