Window Replacementin Redlands, CA
Window replacement in Redlands is treated as permitted work, since the City's fee schedule has a line for replacing a window or sliding glass door, but its exempt list never names windows. In historic districts, new sizes or openings visible from the street need a Certificate of Appropriateness. The 2025 wildfire code applies citywide.
Redlands windows have seen a lot of sun. NOAA's 1991 to 2020 normals for a station inside the city give an average August high of 96.2 F, about 104 days a year at or above 90 F and about 26 at or above 100 F. The Census Bureau's 2024 one-year estimates count 27,483 homes, with about 56.0 percent built before 1980 (the Housing Element's older table says 65.8 percent), so plenty of frames are single-pane originals, early aluminum or old wood. Owners report a median home value of $613,600 here, with a margin of plus or minus $29,608.
This page covers historic district review first, then the permit question, heat and wind, wildfire, lead-safe work, sliding doors and new openings, and the schedule. We read City pages directly, but Municipal Code text came from GoCodebook's third-party mirror, so confirm each rule with the Building & Safety Division. Price ranges are on our windows page, and the Redlands area page lists every trade we cover here.
Where Redlands rules reach a window order
Where windows permits come from in Redlands: City of Redlands Development Services Department, Building & Safety Division.
- Windows: the fee study carries a permit line for replacing a residential window or sliding glass door ($220 full cost for quantity 1 to 4, current $191.55, plus $37 for each additional window) and one for a new non-structural window, so change-outs are treated as permitted work; the 'Do I Need a Permit?' handout does not name windows and says it is not exhaustive.
- Historic windows: in a historic district or on a designated property, new window or door sizes or new openings visible from the street are a major Certificate of Appropriateness item (Commission hearing), while new openings that match existing material and size on side and rear elevations are minor (staff approval).
Can I replace the original windows in a Redlands historic district home?
Maybe, and the City's lists do not settle it. A Certificate of Appropriateness is needed for exterior changes to designated resources and for new construction in the eight local districts, and the Planning checklist makes new window or door sizes or new openings visible from the street a major item for the Historic and Scenic Preservation Commission. New openings that match existing material and size on side and rear walls are minor, approved by staff. The lists never name a like-for-like replacement of an existing window, so we cannot say whether one needs a certificate.
Ask Planning at 909-798-7555 ext. 1 before you order anything for a district home or landmark, and bring photographs and samples, since the application asks for colors and materials under Municipal Code 2.62.200. The districts include Eureka Street, West Highland Avenue, Early Redlands, Normandie Court, East Fern Avenue, Garden Hill, La Verne Street and Smiley Park Neighborhood. The City also accepts Mills Act contracts, with a $1,160 application fee, to offset upkeep of historic properties, and the Housing Element says owners fix up South Redlands homes more than their age predicts.
Do replacement windows need a permit in Redlands?
Treat them as permitted work. The City's building fee schedule has a line for replacing a residential window or sliding glass door, and another for a new non-structural window, which tells us the City issues permits for them. The 'Do I Need a Permit?' handout does not mention windows and calls itself not exhaustive, and we did not read the State code's exempt list, so we cannot say whether a same-size change-out is exempt. We ask the counter, and in a historic district the answer comes from Planning first.
Bring the count and size of the openings. A permit for a window job is applied for in person, because only a short list of types, such as solar, water heaters, HVAC changeouts, panel upgrades, patio covers, block walls, fencing and re-roofs, can start in the City's online portal. The counter hours conflict between pages, Monday through Thursday on one and Monday through Friday on another, each with alternate Fridays closed, so call 909-798-7536 first. Inspections are requested online, and fee amounts are left out here because the schedule's columns are unclear.
Which replacement windows suit Redlands heat and Santa Ana wind?
Dual-pane glass with a low-E coating and a low solar heat gain number is the usual answer to this climate. Redlands is dry, with 12.87 inches of rain a year and only 0.10 and 0.09 inch in July and August, and the City's design criteria place it in Climate Zone 10. The NFRC label on each window states its U-factor and solar heat gain coefficient. We do not print Title 24 values because city handouts and the 2025 cycle disagree, so we confirm the numbers for your climate zone from the label and the counter.
Wind is the other half. The 2021 hazard plan says winds can become steady at up to 20 mph and gust to 30 to 40 mph year-round, and the 2025 wildfire plan calls the Santa Ana winds powerful and dry. The City's structure criteria list basic wind speeds of 90 to 107 mph by risk category. On Angi's Los Angeles page, updated July 2026, low-E coatings add $300 to $1,100 per window and tempered glass $200 to $700, so both are real price lines. We found no source on sun exposure by Redlands street, so we judge each wall on site.
Does the 2025 Redlands wildfire code change which windows I can install?
It can, depending on where the house sits. The City adopted the 2025 California Wildland-Urban Interface Code in all areas of the city under Chapter 15.30, and the 2025 Community Wildfire Protection Plan says about 30 percent of Redlands is in a high fire hazard severity zone, concentrated in the south and east near Smiley Heights, Live Oak Canyon, San Timoteo Canyon and the Mentone edge. The Redlands Fire Department and Development Services are dual authorities under that code.
The sections we read do not list glazing specifications for a replacement, and we could not confirm which parcels are mapped, since the State map viewer refused our tools. Los Angeles' own fire-zone checklist, as an example of the kind of rule that exists, asks for multilayer glass with at least one tempered pane, but that is not Redlands' text. Ask the Fire Department about your address before ordering. Existing buildings in High and Very High zones also keep the first 5 feet around walls ember-resistant, with no organic mulch under or beside new glass.
Do window replacements in pre-1980 Redlands homes need lead-safe work?
When paid work disturbs painted frames or trim in a house built before 1978, federal lead rules apply. About 56 to 66 percent of Redlands homes predate 1980, depending on the survey, and the Census table cannot separate 1978 from 1979, so your own build year decides. The Housing Element notes that most repair need, painting, reroofing and some reconstruction, sits in North Redlands, where many homes are over 50 years old. Lead-safe practice means containment, wet methods and cleanup that a firm without certification may not follow.
Dust is regulated here too. Window demolition and stucco cutting also fall under South Coast AQMD dust control, and a permit can be suspended where dust runs over the limits. Stucco patching around retrofit frames is a separate permit line at the City. Our license check guide shows how to confirm a firm's license and certification.
Can I enlarge a window or swap a slider for a patio door in Redlands?
Changing the size of an opening is a different job from a swap. The City's fee schedule carries a replacement line for sliding glass doors as well as windows, but a bigger opening or a new one needs framing, a header and plans, and a new opening visible from the street in a historic district is a major certificate item. We have no Redlands source on bedroom egress sizes or sill heights, so we do not print dimensions and check them against the code at plan stage.
Think about where the opening faces, because glass area and orientation decide how hard the afternoon sun works on a room. A west or south wall of a Redlands house takes the hottest afternoons, and a large slider adds glass area to it. For a room that is getting bigger, the Redlands room addition page covers the plan set and zoning, and for glass in a backyard unit see the Redlands ADU page. A bath window facing the street is on the Redlands bathroom page.
How long does window replacement take in Redlands, and who installs?
As our planning estimates, not City or maker figures, expect 1 to 2 weeks to measure and quote, any permit or historic review, 4 to 8 weeks for custom orders to be built and 1 to 3 days on site. The supplier quotes the real lead time, and the written scope should list every opening by room, size, glass type and frame color so the order matches what arrives. A historic hearing adds about 45 days on the Housing Element's figure, so a district home starts with Planning.
MDG Builders, CSLB #1040337, is the general contractor that measures, orders, files the permit and books the crew, and a licensed glazing or window subcontractor installs. Ask that firm for its license number and a certificate of insurance, and read the subcontractor chain explained. Federal rules changed: the IRS says the 25C credit is not allowed for property placed in service after December 31, 2025, so ignore older ads for it.
Window photos from Redlands and nearby homes
Window and patio door scenes tied to Redlands, from flashing and double-pane corners to fire-zone glass and old wood frames, on homes from the South Redlands districts to the tracts farther north. Tap a photo to enlarge it.
What windows costs around Redlands
On our windows page vinyl replacement windows run roughly $550 to $1,200 each installed, and a whole house of 10 to 15 windows about $14,000 to $28,000, with wood and fiberglass above that. Los Angeles figures support those ranges: Remodeling magazine's 2025 Cost vs. Value report prices a vinyl window job at $23,783, recouping 83.2 percent at resale, and a wood job at $27,913, recouping 81.9 percent, and Angi's July 2026 page for that city shows an average of $19,356. No source gave a Redlands price, so these are a regional frame. Historic review, a window larger than the old one, fire-zone glass and stucco repair can each move a quote, and the City's schedule columns leave the permit line open, so it appears separately in a proposal. For other cities see windows in San Bernardino, Fontana, Ontario and Los Angeles.
| What it covers | Typical range |
|---|---|
| Vinyl window, installed, each | $550 to $1,150 |
| Wood or fiberglass window, installed, each | $950 to $2,400 |
| Whole house, 10 to 15 windows | $14,000 to $28,000 |
| Glass options, per window | Double-pane $500 to $2,000. low-E $300 to $1,100. tempered $200 to $700. |
| Remodeling Cost vs. Value 2025, Los Angeles | Vinyl $23,783. wood $27,913. |
| New or enlarged egress opening | $3,200 to $6,500 |
Redlands window replacement questions, answered
Do I need a permit to replace windows in Redlands?
Treat it as yes. The City's building fee schedule has a line for replacing a residential window or sliding glass door, but its permit handout never names windows and we did not confirm a state exemption. Call the One Stop Permit Center at 909-798-7536, and call Planning first when the home is in a historic district.
Do I need special fire-resistant windows if I live in a Redlands fire zone?
Possibly. Redlands applies the 2025 California Wildland-Urban Interface Code citywide, and about 30 percent of the city is in a high fire hazard zone. We could not confirm which parcels are mapped or what a replacement must use, so ask the Fire Department with your address before ordering glass.
How much does it cost to have windows replaced?
About $550 to $1,200 per vinyl window installed, or roughly $14,000 to $28,000 for a 10 to 15 window house, on our ranges. They come from Los Angeles sources, not a Redlands survey. Wood, fiberglass, fire-zone glass, bigger openings and stucco patching raise the price.
How long does it take for new windows to be installed?
About 1 to 3 days on site, but the whole job takes weeks. Plan on 1 to 2 weeks to measure, 4 to 8 weeks for custom orders and extra time for permits or a historic hearing. These are our estimates, and the supplier gives the real lead time.
What do U-factor and SHGC ratings mean?
U-factor measures how fast heat passes through the window, so lower is better insulation. SHGC, the solar heat gain coefficient, measures how much sun heat comes through, and a low number helps in a Redlands summer. Both are printed on the NFRC label, and we confirm required values for your climate zone.
Is replacing home windows worth it?
At resale, often yes: Remodeling magazine's 2025 Cost vs. Value report for Los Angeles shows vinyl window replacement recouping about 83.2 percent of its cost. We did not find a Redlands study and do not print energy savings, so the case rests on comfort, sound and the condition of the old frames.
What are replacement windows, and how do they differ from a full-frame job?
Replacement windows are made to fit inside an existing frame, so trim and stucco stay mostly untouched, while a full-frame job removes the old frame and flashing. Full-frame work costs more and may need stucco or siding repair. In a historic district, either route can touch the street view.
Can I install a window myself?
Legally an owner may do some work on their own home, but a Redlands window change is permit work and needs inspection. Flashing and sealing errors show up as leaks later, and a pre-1978 house carries lead paint risk. Hiring a licensed contractor also adds state contract protections.
Tell us about your Redlands windows
Share the neighborhood, roughly when the house was built, whether it sits in a historic district or near the canyons, and how many windows or doors you want replaced, and we start with the review question and any lead-safe check.