A technician on site measures what the design depends on. The capture comes back as a 3D roof model, a structural record and an electrical record your engineer can build on without a second truck roll.
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Each one has its own page with the full detail.
Guessing costs you modules. Measuring finds them: same roof, same setbacks, a bigger system, because the exclusions are real instead of precautionary.
How this roof gets designed today: off satellite imagery. Nobody knows exactly what is up there, so the design carries a blanket keep-out and the array shrinks to whatever is definitely safe.
A trained technician is at the property within 48 hours: on the roof measuring planes, azimuth and pitch, in the attic recording rafters and sheathing, and at the service panel checking bus rating and main breaker.
The capture becomes a dimensioned 3D model: every plane with a real area, pitch and azimuth, every vent and skylight located to the inch. The keep-out collapses onto the real hardware and the array re-flows around it.
Structural and electrical engineering off the model and what the technician verified on site: battery and inverter at the service entrance, conduit routed to the array, attachments landed on real rafters. Stamped and permit-ready.
Satellite gets you the outline. The design lives or dies on what is under the shingles and behind the panel cover. That is where the technician spends the visit.

Every plane measured on the roof, then flown for a dimensioned 3D model and a shade study.

Rafter size, spacing and span recorded from inside the attic, so attachments land on real framing.

Bus, main, slots and the path from the service to the array, photographed and written down.
Nobody knows exactly what is up there, so the design carries a blanket keep-out and the array shrinks to whatever is definitely safe. You lose modules to precaution, not to physics.
An unmeasured vent becomes a three-foot exclusion zone because nobody can prove it is smaller. Multiply that by every penetration on the roof.
One obstruction in the wrong place turns a finished layout back into a draft, after the customer has already seen and approved it.
A 100A bus where the design assumed 200A. Found on install day, it costs you the day and sometimes the job.
The drone flight becomes a dimensioned 3D model. Every plane gets a measured area, pitch and azimuth. Every vent, pipe and skylight is located on it.
The same model runs a full-year shade study, so the layout starts from where the sun actually lands, not from a keep-out drawn around everything nobody measured.

Four steps. The first is the only one that cannot be done remotely.
A technician at the property within 48 hours: on the roof, in the attic and at the service panel.
Planes, pitch, azimuth and every obstruction, built from the drone capture.
Attachments on real rafters. Interconnection sized to the bus that is actually there.
No tiers and no per-site quoting. The complicated roofs are exactly the ones you most want surveyed properly. The full standard is in the site survey checklist.
Kin Home
LGCY
GoodPWRPast project experience includes brands that have since changed ownership or ceased operations.
EnFin
EverBrightRoof, structural and electrical documentation for financing and TPO programs. Confirm the required capture brief for each program before the visit.
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