A shared map of buried hazards before the next digger arrives. Crews drop pins with photos when they find ducts, cables, mains, and unknown services the drawings missed.
Solo tier free · Offline-first · v2.1 · Reading, UK
60,000
utility strikes a year in the UK.
Utility Strike Avoidance Group, USAG 2023 annual report. The number has barely moved in a decade.
Most sites already hold the information to avoid the next strike. Someone on the last phase spotted the unmarked fibre at 0.4 m. The drainage crew noticed the gas main ran two metres west of the drawing.
GroundPin is the place it gets written down — a pin, a photo, a utility colour, shared with your team and, where you choose, with the other contractors working the same road.
It doesn't replace a CAT scan, an LSBUD search, or an NUAR lookup. It stops good ground knowledge getting binned at the end of every phase.
Illustrative only · Photos supplied to GroundPin for marketing use · Pin details are representative, not live data
Live on the App Store and Google Play. Free Solo tier, no card required.
Solo tier is permanently free — no card required. Drop pins and capture photos with no signal; sync runs when the app is open or active in the background so the queue drains as soon as the handset picks up 4G or wi-fi.
Reads like the safe-system-of-work, because it is one. Replaces the WhatsApp message with a record.
Driver spots an unmapped asset. Opens GroundPin, taps the spot on a satellite tile that's already cached. Works without signal.
Photo, depth, utility colour, voice note. Auto-stamps GPS, time, user, sheet ref. Three taps and fifteen seconds.
Pin syncs the moment they're back on data. The next crew sees it before their bucket goes near it.
Site dashboard · every pin from every crew, on one view.
Product evidence
Every pin carries a GPS fix, on-site photos, a utility type, a risk rating and a note. GPS on a modern phone is good to 3–5 m in the open and worse next to tall buildings, so a pin says “there's a hazard in this area, look at the photo” — not “the cable is exactly here.”
CAT scan and trial-hole before excavation still apply. The photo is what the crew actually digs by.
Phase 1 groundworkers, the M&E subbie, the site manager in the cabin, and the second-fix crew six months later all look at the same pins. Not a WhatsApp thread, not a photo library on one foreman's phone.
Every pin, edit, photo and verification is stamped with a named user and a time. If a CDM coordinator or a solicitor later asks who knew what and when, the trail is already there.
HSG47 is the HSE's guidance note on avoiding danger from underground services. Every CAT survey, utility drawing and mark-out team in the country already works to it. GroundPin pins use the same colours on the map, so there's no new legend to learn and a pin can be read at arm's length in poor light.
Fibre, street lighting, district heating, oil and reclaimed water are included. Read HSG47 at hse.gov.uk.
Utility colour reference
Drop pins, capture photos, edit utility records and verify a colleague's work with no signal at all — every change is saved on the device and queued. Sync runs when the app is open or active in the background, so the queue drains without anyone touching it. No data entry backlog at the end of the day.
Pins belong to a site. A site belongs to your company. Subcontractors see only the sites you invite them to. Admins can pull a CSV or a PDF at any time; a full export is available on the Business plan.
Per user, billed monthly, cancel any time. Unlimited pins and sites on every paid tier.
Solo contractors and sole traders trying the app.
Free
For one user. No card required.
Small groundworks firm or a single project crew.
£12.99/ user / month
Billed monthly. Minimum 2 users. Annual saves two months.
On the roadmap
Multi-site contractors running handovers between phases.
£19.99/ user / month
Billed monthly. Minimum 5 users. Annual saves two months.
On the roadmap
Principal contractors and Tier-1 firms running supply chains.
£29.99/ user / month
Billed monthly. Minimum 10 users. Annual saves two months.
30-day free trial · cancel anytime
On the roadmap
Frameworks, utilities, and large portfolios.
Everything in Business · Bespoke contract terms · Custom agreements
Prices exclude VAT. 30-day free trial on Business. Subcontractors invited to a site do not consume a user on your plan.
If yours isn't here, email hello@groundpin.co.uk.
