Welcome to Subtoco

Expert Pre-Purchase Building Surveys You Can Rely On

Visualise Before You Commit – Instantly see architectural sketch overlays tailored to your home type.
No Uploads or Logins Needed – Skip the hassle. No personal data required.
Built for Speed – Configure in under a minute—perfect for comparing multiple homes or renovation ideas.
Built by Experts – Created in collaboration with Property Health Check and architectural design specialists.
Plan with Confidence – Use your report to discuss ideas with your builder, architect, or estate agent.

Choose Your House Type – Detached, semi-detached, terrace—you name it.
Match the Look – Select the thumbnail that best resembles your property.
Tick Your Possibilities – Rear extension? Attic conversion? Wrap-around design? Just click what you’re curious about.
Get Instant Visuals – See thumbnail sketches showing what those changes could look like—based on real architect-prepared overlays.
Save & Share – Grab your unique link, or pop in your email to receive a downloadable version.