The first seller keeps the original generation estimate after redrawing around a roof light.
THE YORK FIELD GUIDE / SOLAR PANELS
Solar panel installers in York
A York roof can lose panel space to a roof light, parapet or chimney. Ask the designer to mark the usable area before you compare generation forecasts.
START WITH THE PROPERTY
Work from the visible roof
In York, a roof that seems generous on a map may lose useful space to a parapet, roof light or chimney. Give installers photographs from different angles and flag any roof repair already planned.
BEFORE YOU ACCEPT A QUOTE
Check what changed after survey
Compare the first estimate with the surveyed layout. If panels move or disappear, the annual generation figure, scaffolding plan and final price should move with them; an unchanged forecast is a reason to ask for an explanation.
ILLUSTRATIVE QUOTE COMPARISON
The roof survey removes two panels. What changes?
The second updates its panel count, inverter choice, output and price together.
THE DECISION
Use the surveyed layout as the only basis for comparison. A forecast from a superseded drawing tells you nothing useful about the system you will receive.
ANOTHER PROJECT AT THE SAME ADDRESS?
Explore the other options in York.
NEXT STEP IN YORK
Check the electrical destination.
A panel layout is only half the scheme. Show the meter and consumer unit location, and ask where the inverter and cable will go before accepting a final installed price.