The town of Sonoma has been around since the Mission went up in 1823, and the streets near the Plaza show it. Old adobes, Victorians and early 1900s cottages sit a block or two from newer homes, and many of the older ones still have their original wood windows. Head up the valley through the Springs toward Glen Ellen and Kenwood and you'll find a different mix: ranch homes from the '50s and '60s, hillside houses with long views, and rural properties surrounded by vineyards and oak woodland. The weather pulls in two directions here. Mornings are often foggy and damp, then afternoons heat up fast, and older windows struggle with both.
We work all through the city and the valley. On homes near the Plaza, wood and fiberglass windows usually make the most sense, since keeping the house's character matters as much as performance. Out in the Springs and the valley ranch homes, vinyl retrofits are the practical choice, and failed seals on old dual-pane windows can often be fixed with foggy glass replacement alone. Reach out and we'll schedule a free estimate.
Design Review on Older Sonoma Homes
In the city of Sonoma, changing the windows on an older house can take more than a call to a contractor. The city has required a design review permit to replace windows on single-family homes more than 45 years old, so a lot of houses near the Plaza and across the older parts of town fall under that rule. The city's Design Review and Historic Preservation Commission looks at whether new windows fit the character of the house: similar sizes, similar proportions, similar grille patterns. That's not a reason to keep living with drafty glass. It's a reason to plan the replacement carefully and check with the city before ordering, which is what we do. Clad wood or fiberglass with matching grilles usually fits right in, and it seals out the morning fog far better than the old sash ever did. Homeowners in Petaluma deal with similar rules in that city's historic districts.
Fire Zones Up the Valley
The 2017 Nuns Fire burned through the hills around Glen Ellen and Kenwood, and the 2020 Glass Fire came back through Kenwood three years later. Much of the valley's hillside land, on both the Mayacamas and Sonoma Mountain sides, sits in mapped fire hazard zones. New windows in those zones must be multi-pane with one or more tempered layers, a spec nearly every dual-pane window can be built to. If your house faces oak woodland, brush or dry grass, start with those openings. Big sliders and picture windows on the downhill side are the ones that take the most heat. We check every address on CAL FIRE's map before we quote. Further west, homes in the hills around Sebastopol face a similar mix of woods and fire risk, though with more fog.
Common Questions
For many older homes inside city limits, yes. The City of Sonoma has required a design review permit to replace windows on homes more than 45 years old. Homes in the unincorporated parts of the valley, like the Springs, Glen Ellen and Kenwood, fall under the county instead. We check which rules apply to your address before we order anything.
Match what's there. That means similar frame widths, the same opening style (double-hung stays double-hung), and grilles that copy the old divided-pane pattern. Clad wood gets closest for most historic homes, with wood you can paint inside and a tough skin outside. We study the windows you have now and order replacements that keep the house looking like itself.