The symptom
I want fresh air through the upper section while the lower section stays closed, with the option to operate both sections together.
The proposed method
Confirm the selected split-door assembly and how the upper and lower sections are intended to operate. Ask which connecting hardware, latches, shelf and seals are included and how the frame and threshold will be handled. Agree on finishing responsibilities and checks of the two sections operating separately and together.
Items to discuss
Dutch door leaves, prehung jamb, hinges, shelf, quadrant bolt, weather seals, threshold, lock hardware. Clarify which parts or materials would be supplied, which tools would be used, and what documentation is included.
Property context in Daly City
The city boomed after the 1906 earthquake and was incorporated in 1911, so older post-earthquake housing is part of its built history.
Source for building history ↗The air district’s 2011 regional climate description notes frequent cool, foggy summer weather in coastal Peninsula towns. This is regional outdoor context, not an assessment of a property’s equipment or indoor conditions.
Source for local exposure ↗Daly City's Building Division publishes a building maintenance permit covering, in the city's own words, the replacement of an electrical service upgrade, furnaces, garage doors, roofs, siding, termite work, water heaters, windows and other similar replacement work. If the job being discussed is a straight replacement of one of those, ask whether it is handled as a maintenance permit. Confirm the address and the proposed scope with the Building Division; this page does not decide what your property requires.
Source for planning your work ↗Area-wide context is not a finding about your own property.
What shapes the quote?
The component being changed
Glass-only, hardware-only and complete-frame work involve different materials and labor. Compare proposals for the same work.
Access and concealed condition
Opening size, access, finishes and damage discovered during removal can change the work. Agree how any change will be documented.
The complete proposal
Clarify removal, disposal, weatherproofing, finish restoration and completion checks before comparing totals.
Ask for a written quote and confirm the complete charge before work begins.
Before the visit
A little preparation helps.
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