GroundproofGroundproof

Your contractor sent photos. Were they taken at your house?

Groundproof checks every progress photo from your build in Nigeria against the building's NIPOST postcode. If the phone wasn't standing at your house, you'll know before you send the next payment.

Pilot: 5 free check-ins per property. No card needed.

How it works

  1. Add your property

    Enter its NIPOST postcode. We confirm the building exists and show what NIPOST has on record for it.

  2. Your person on the ground checks in

    A relative, contractor or agent uses our app on site. Photos come from the in-app camera only, with location and time attached.

  3. Every check-in gets a verdict

    We ask NIPOST which building the phone was at. Same postcode, close by: verified. Anywhere else: flagged, and you get an alert.

Your person on the ground needs the app

You follow everything here on the website. The relative, contractor or agent visiting the property uses the Groundproof app: it takes the photos, reads the location at the house, and checks it with NIPOST. Photos can't come from anywhere else, which is what makes the verdicts trustworthy.

AndroidGet it for AndroidiPhoneComing later

iPhone app coming later. For now, your person on the ground needs an Android phone.

The Groundproof app showing a check-in verified at the building

Pricing

Per property. Your people on the ground never pay.

Pilot: your first 5 check-ins are free.Add up to 2 properties, do the anchor visit, and see real verdicts for a month before you pay anything.

Check pack

₦6,000

3 check-ins, ₦2,000 each. No subscription.

  • Use them whenever you want an update
  • Photo log with verdicts
  • Top up any time

Watch

₦5,000 a month

About ₦1,250 per check-in.

  • Weekly check-ins
  • One person on the ground
  • Photo log with verdicts

Build

₦15,000 a month

Or ₦150,000 for 12 months, two months free.

  • Stages tied to your payments
  • Unlimited check-ins, up to three people
  • Instant alerts on flagged photos

Paying from abroad? UK and other international cards work. Prices are in naira and your bank converts at checkout.

No one on the ground?

Own property in Nigeria

No relative you can send? We'll match you with a local surveyor, agent or builder, and every visit they make is still verified.

Find me someone

Live in Nigeria

Earn from property visits in your area for owners abroad. You need an Android phone and an eye for detail.

Become a reporter

What Groundproof can't do

  • It isn't a title search. NIPOST confirms a building and its recorded use, not who owns it.
  • Postcodes cover buildings. A bare plot may not have one until something is built on it.
  • A determined person can fake a phone's location. We block the common methods and flag anything that looks off; we don't claim it's impossible.
  • NIPOST's postcode system launched on 1 October 2026 and some records are still being corrected.