The symptom
The side-to-side window drags, whistles in the wind, and leaves an uneven gap at the latch side.
The proposed method
Confirm the panel arrangement, opening direction and installation scope for the replacement slider. Ask which frame and trim components will remain and how the provider will check panel movement, meeting points, locks and the proposed drainage arrangement. Identify any separate sill or surrounding-opening repair before the work is agreed.
Items to discuss
horizontal slider frame, fixed panel, rolling sash, rollers, interlock seals, weep covers, latch. Clarify which parts or materials would be supplied, which tools would be used, and what documentation is included.
Property context in South of Market
The Western SoMa plan treats the district as a mixed-use environment while protecting historic and cultural resources, so service needs can span older commercial fabric and newer infill.
Source for local context ↗San Francisco's Department of Building Inspection publishes step-by-step instructions for over-the-counter permits covering doors, windows, reroofing and other common exterior residential projects. The page lists in-kind window replacement and in-kind exterior door replacement, at the same size and location, among the projects eligible for over-the-counter review through the PermitSF portal, and separately says that new windows or exterior doors in new locations are among the projects that need plans. Read it before agreeing a scope, and confirm the address, the opening and the review route with the department. It does not decide eligibility, timing or requirements for an individual property.
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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