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Aerial imagery © LINZ, CC BY 4.0
Aerial roof surveyNelson & RichmondFlown 2023–25

Every roof in Nelson, read from the air.

RoofHawk finds the tired ones before anyone knocks on the door.

Coverage

32,258 roofs read so far, suburb by suburb.

Every suburb of Nelson and Richmond has been read, from Atawhai down to Brightwater and out to Māpua, off the latest LINZ flights: Nelson 2025, Tasman 2023. The rural blocks between them are next, then further out as roofers come on.

Read Not yet Numbers are roofs read, not leads. No addresses or roofs are shown here.

    What a roofer gets

    The roof, the years, and what it's made of.

    Every roof that's on its way out lands in the app as a card: the photo off the flight, the same roof back through 2019, 2022 and 2023, then what it is and how bad.

    Move it along from new to contacted, quoted, won or lost, and keep your notes on it. A take-off estimate opens from the same card.

    • Materiallong-run iron, tile, and the rest, read off the photo
    • Conditionrust, faded, scoria or sound, with how far gone
    • Areathe roof's footprint in square metres

    Screens from the live app, on the roof at the top of this page. The address line is cropped off here; in the app every card carries its street number.

    RoofHawk app: a rusty roof photo, Navigate and Street View buttons, and the same roof in 2019, 2022 and 2023.
    RoofHawk app: roof facts (Toi Toi, long-run iron, rust, severe, 140 square metres, score 82) and the new / contacted / quoted / won / lost buttons.

    How a scan works

    A box on the map, and every roof inside it gets read.

    A scan starts with a box drawn over a patch on the LINZ aerial. RoofHawk cuts out every building in it and reads each roof: rust, faded, scoria or sound. What comes back is a ranked list, worst roofs first.

    One read of a flight serves every roofer in that suburb until LINZ flies it again.

    RoofHawk scan picker: a dashed box drawn over central Nelson on the aerial, about 2.8 by 2.0 kilometres, with a Use this area button.

    Pricing

    Pick the suburbs you work.

    PlanSuburbsLeadsPer month
    Solo1 suburbShared with a few roofers$49
    CrewUp to 3Shared, some exclusive$129
    EnterpriseUnlimitedExclusive to you$349

    NZD, GST included, month to month. Accounts are switched on by hand while the first suburbs open.

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