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.

Your first check-in is free. 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.

AndroidIn reviewiPhoneComing later

The Android app is with Google for review. Join the pilot list and we'll send your person on the ground an early-access link.

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

Pricing

Per property. Your people on the ground never pay.

Your first check-in is free.Add your property, do the anchor visit, and see a real verdict 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.

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.