The question nobody asks before signing
Most homeowners who call for window replacement quotes are focused on price and product. The timeline question, “when will this actually be done?”, usually comes up after signing the contract when they realize the windows they thought would be installed in two weeks are actually six weeks out.
San Diego window replacement projects take longer than most homeowners expect, and understanding why helps you plan better and avoid the frustration of an unrealistic expectation. Here is how the timeline actually breaks down.
Phase 1: measurement and order (weeks 1-3)
After signing a contract, the first step is an accurate field measurement of every window opening on the project. For retrofit replacements, this means measuring the existing frame interior dimensions precisely, because the new window unit is sized to fit within the existing frame. A sloppy measure means a window that does not fit, which means a reorder and a 6-10 week delay.
For a full-frame replacement, the measurement is of the rough opening after the existing frame is removed, which means the installer either takes a preliminary measure from the existing frame and adjusts, or the order waits until demo is complete. Most experienced crews can take a precise retrofit measure in 30-60 minutes for a 10-12 window home.
After measurement, the windows are ordered from the manufacturer. This is where the timeline diverges significantly based on product choice:
In-stock or standard configurations: Some manufacturers and distributors keep common sizes and configurations in stock in San Diego. A Milgard Tuscany double-hung in white vinyl at a standard size may be available in 1-2 weeks from a local distributor. Not every project has this option, but it is worth asking.
Custom or semi-custom orders: Most replacement windows are custom-sized to the measured opening. These run 3-6 weeks from order to delivery for major manufacturers (Milgard, Simonton, Anlin) under normal lead times. In periods of high demand (post-storm replacements, contractor backlogs), lead times extend to 8-10 weeks.
Fiberglass or specialty products: Fiberglass windows, large fixed-glass units, and non-standard configurations typically run 6-10 weeks.
Phase 2: permit (weeks 1-4, overlapping with order)
The permit should be submitted as soon as the scope is defined, ideally at the same time as the window order. The permit and the windows will arrive at roughly the same time if submitted together. Waiting to submit the permit until the windows arrive extends the project unnecessarily.
Standard window replacement permits in most San Diego jurisdictions are over-the-counter or same-day approvals for straightforward retrofits. El Cajon, Santee, and unincorporated county areas typically process standard residential window permits within 1-5 business days. The City of San Diego and Chula Vista can run 5-15 business days depending on current workload.
Projects that require plan review (rough opening changes, structural modifications, additions) extend the permit timeline to 2-4 weeks.
Phase 3: installation day (1-3 days)
Installation day is usually the shortest phase. A professional crew can complete a retrofit replacement of 10-15 standard windows on a single-story San Diego home in one day. Two-story homes or larger window counts run 1.5-2 days. Full-frame replacement with stucco patching requires an additional visit after the stucco cures.
What to expect on installation day:
Morning: Crew arrives and does a walk-through. Windows are staged outside each opening. Any furniture near windows is moved away from the work area. The crew works room by room, removing the old window, prepping the frame, installing the new unit, sealing the perimeter, and restoring interior trim.
During installation: The home will have open windows for 5-15 minutes per window while the swap happens. In mild San Diego weather this is not a hardship, but it is worth planning around if small children or pets could be an issue.
Post-install cleanup: A good crew leaves the work area clean. Window frames and sills may have silicone residue that the crew should clean before leaving. Check the perimeter caulk on the exterior for smooth application.
For full-frame projects: The stucco patch happens on a separate visit after the windows are installed and the patching materials are ready. The stucco repair typically runs a week after the installation to allow proper curing.
Phase 4: inspection (1-2 weeks after installation)
After installation is complete, the contractor schedules the building inspection. In San Diego County jurisdictions, inspection scheduling typically runs 3-10 business days out from the request.
The inspection is usually 20-30 minutes for a standard window project. The NFRC labels should still be visible on the installed windows (do not remove them before inspection). In sleeping rooms, the inspector measures the egress clear opening.
If the inspection passes, the permit closes and the project is complete. If there is a correction needed, the contractor addresses it and schedules a re-inspection.
Total timeline: how it adds up
A typical San Diego window replacement project from signed contract to passed inspection:
| Phase | Duration |
|---|---|
| Measurement and ordering | 1-2 weeks |
| Window manufacturing lead time | 3-6 weeks |
| Permit processing | 1-2 weeks (overlaps with order) |
| Installation | 1-3 days |
| Stucco patch (if full-frame) | 1-2 weeks |
| Inspection scheduling | 1-2 weeks |
Total elapsed time for most San Diego retrofit projects: 6-10 weeks from contract to passed inspection. Full-frame projects with stucco patch and re-inspection run 8-14 weeks.
The longest phase is always the manufacturing lead time. Nothing in the process compresses that meaningfully, though some manufacturers and distributors can expedite specific products for a premium.
Seasonal considerations in San Diego
San Diego’s weather is mostly cooperative for window replacement year-round, but a few seasonal factors affect scheduling:
Winter rain: San Diego’s rainy season runs November through March, and while annual rainfall is modest (about 10-11 inches in most coastal areas), wet days can delay exterior stucco patching. A project that installs new windows in December may find the stucco patch delayed a week or two waiting for a dry spell.
Summer demand: Window replacement demand peaks in late spring and summer when homeowners notice their west-facing rooms are overheating. Manufacturer lead times may extend during this period.
End-of-year projects: Homeowners who want a project done before year-end for financial planning reasons should contract in September or October to allow for the 6-10 week timeline.
How to stay on schedule
Three practices keep a project on track:
- Sign the contract and order the windows before the permit is submitted, but submit the permit on the same day as the order.
- Have someone home for both the measurement visit and the installation day to answer questions and sign off on any decisions made on-site.
- Clear the work areas before the crew arrives. Moving furniture away from windows the morning of installation saves crew time and reduces the risk of damage.
For the full walkthrough on what installation day looks like for retrofit vs. full-frame, see the retrofit vs. full-frame installation guide.
For information on what permits cover and what the inspector actually checks, see the window replacement permits guide.
The bottom line
A typical San Diego window replacement takes 6-10 weeks from signed contract to passed inspection, with the manufacturing lead time driving most of that duration. The installation itself is fast. Planning for the full timeline, including the permit and inspection phase, prevents the frustration of a project that runs longer than expected.
Call (858) 925-5546 to get connected with an insured local window crew and get a real timeline estimate based on your specific product choice and jurisdiction.