The Best Windows for San Francisco
Victorian and Edwardian Homes

San Francisco has more intact Victorian-era buildings than any other city in the United States: an estimated 48,000 structures built between the 1870s and early 1900s. Replacing windows in one of these homes requires a different approach than a standard window replacement. You are working with buildings that have historical significance, architectural character worth preserving, and in many cases, regulatory oversight.

This guide covers what you need to know before replacing windows in a Victorian or Edwardian home in San Francisco: what the city requires, which materials work, which to avoid, and what good window replacements look like in practice.

Why Window Replacement in Victorians Is Different

Original Victorian and Edwardian windows were typically double-hung sash windows with narrow wood profiles and either true divided lights (individual panes of glass in a grid) or a single large pane. The proportions, sightline widths, and profiles of these windows are part of what gives these homes their character.

Modern window products (particularly basic vinyl) have significantly thicker frames than the originals. On a Victorian, a thick-frame vinyl window installed where a narrow wood window sat can look obviously wrong, disrupting the facade proportions even when the overall window size is identical.

What San Francisco's Preservation Rules Actually Require

Not every Victorian is subject to the strictest rules. Preservation oversight in San Francisco falls into several tiers:

• Article 10 Landmarks: Individually designated historic landmarks. Window replacement here requires a Certificate of Appropriateness from the SF Historic Preservation Commission. Wood or clad-wood windows matching the original profile are typically required.
• Article 11 Conservation Districts: Neighborhoods like Alamo Square, Duboce Park, Liberty Hill, and parts of Pacific Heights. Window changes visible from the street require Planning Department review. Vinyl windows that do not match original profiles are routinely denied.
• Historic Resource Evaluation (HRE) properties: Buildings that have been evaluated as historically significant but are not formally designated. Changes are reviewed as part of any permit application.
• Standard residential properties: Victorian homes outside of the above categories. Most window replacements do not require planning review, but building permit rules still apply, and maintaining the character of the building is generally expected even when not formally required.

If you are unsure what applies to your property, you can check the SF Planning Department's Property Information Map (SF PIM) at sfplanningims.sfgov.org, or simply call us. We know the city's rules well and can tell you what your project will require.

The Best Window Options for Victorian and Edwardian Homes

1. Wood windows (most authentic)

True wood windows (Douglas fir, mahogany, or alder) remain the most historically accurate choice and the only option accepted in the strictest landmark properties. They can be painted to any color, maintain the narrow profiles of original windows, and support true divided lights (actual separate panes) for the most authentic appearance.

The tradeoff is maintenance. Wood windows require repainting every 5–10 years and immediate attention to any caulking or paint failure to prevent moisture intrusion. For sheltered windows on not facing the ocean sides of the house, this maintenance is manageable. For highly exposed windows on properties facing the Pacific or the bay, the maintenance commitment is more demanding.

2. Clad-wood windows (best of both)

Clad-wood windows have a wood interior and an aluminum or fiberglass exterior cladding. The interior retains the warmth and paintability of wood; the exterior shell handles weather with minimal maintenance. This is the most popular choice for Victorians and Edwardians in the Bay Area among homeowners who want authenticity without high upkeep. Marvin, Andersen, and Pella all make well-regarded clad-wood lines appropriate for historic homes.

3. Fiberglass windows with appropriate profiles

Quality fiberglass windows can be made with slimmer profiles than vinyl and can be painted to match any color, making them a viable option in many preservation contexts. They will not be approved in the strictest historic districts (only wood and clad-wood are typically accepted there), but for standard Victorians outside formal conservation areas, a well-chosen fiberglass product looks appropriate and performs extremely well in the Bay Area climate.

What to Avoid on Victorian Homes

• Standard vinyl windows: The thick frames are visually incompatible with original Victorian proportions. Vinyl also cannot be painted, limiting color flexibility. Not accepted in conservation districts or landmark properties.
• Horizontal sliders: Original Victorian windows are double-hung. A horizontal slider is immediately recognizable as a modern replacement and reads as out of character on the facade.
• Snap in grids: Many modern windows offer a plastic grid insert that snaps inside the glass to simulate divided lights. On a Victorian, the difference between a snap in grid and true divided lights (or at minimum, a proper SDL, simulated divided light with external grids bonded to the glass) is immediately visible. Snap in grids look cheap and impermanent.
• Single-pane replacement sash: Replacing a failed double-pane unit with a single-pane insert to save cost. This downgrades both energy performance and noise control, and will not pass design review in regulated areas.

The Permit Process for Historic Properties

For properties requiring review, the process typically works as follows: you submit a permit application through the SF Department of Building Inspection (DBI), which routes to Planning if the property is subject to preservation review. For Article 11 properties, a planner reviews the proposed window specifications against the applicable guidelines. For Article 10 landmarks, a Certificate of Appropriateness from the Historic Preservation Commission is required before a permit is issued.

This process adds time: typically 4–8 weeks for standard review, potentially longer for full HPC hearings. It also adds documentation requirements: you will typically need to provide product specifications, photos of the existing windows, and in some cases drawings showing the proposed replacement in the context of the facade.

We handle this documentation for our clients. It is part of the job.

Cost Expectations for Victorian Window Replacement

Because Victorian window projects typically require wood or clad-wood products plus more careful installation, they cost more than standard replacement projects. A reasonable range for a whole house replacement on a typical SF Victorian:

• Clad-wood windows, 10–12 windows: $18,000 – $30,000
• Full wood windows, 10–12 windows: $16,000 – $28,000
• Fiberglass (appropriate for non-landmark properties), 10–12 windows: $11,000 – $20,000

These ranges include all labor, product, and cleanup. Permit fees and any structural remediation are additional.