
San Bernardino Sunrooms & Patios builds enclosed patio rooms, four season sunrooms, and patio covers throughout Ontario, CA - from the historic neighborhoods near Euclid Avenue to the newer subdivisions on the south side. We have served Inland Empire homeowners since 2015 and respond to every inquiry within one business day.

Ontario has a large number of mid-century ranch homes with covered patios that are perfect candidates for enclosure - the cover and posts are already there, and adding walls and glazing is far less expensive than building from scratch. See our full enclosed patio room installation work, built to handle Ontario summers and the occasional Santa Ana wind event.
Ontario summers hit 100 degrees F regularly, and a properly built four season sunroom with insulated low-E glass stays comfortable when the patio outside is unusable. For homeowners in Ontario's newer south-side subdivisions who want to extend their living space year-round, four season construction is the right investment.
Ontario's mix of older and newer homes means patio configurations vary widely - from the large covered slabs behind 1990s tract homes to the smaller back patios on homes closer to downtown. We design patio enclosures to fit the actual dimensions and conditions of each property, not a one-size approach that looks out of place.
Ontario's spring and fall evenings are mild and pleasant, but the city's inland location means insects and dusty winds can make outdoor sitting uncomfortable. A screen room solves that problem at a lower cost and permit complexity than a full enclosure, and it is an option that works well on the smaller backyards common in older Ontario neighborhoods.
Vinyl frames are a practical match for Ontario's climate - they do not absorb heat the way dark-colored aluminum does, and they require no painting or sealing even after years of intense UV exposure. For rental property owners in Ontario who want a low-maintenance outdoor room that holds up between tenants, vinyl is the material we recommend most.
Ontario's afternoon sun bakes west-facing patios from April through October, and a solid attached patio cover cuts direct solar exposure significantly. We install aluminum and wood patio covers throughout Ontario that are attached properly to the house structure - not freestanding canopies that shift or blow away in Santa Ana wind events.
Ontario is a city of about 185,000 people with a housing stock that spans nearly a century - from Craftsman bungalows built in the 1920s near Euclid Avenue to stucco tract homes from the early 2000s on the south side. Each era of construction comes with different foundation depths, wall assemblies, and connection points, and a sunroom addition needs to attach correctly to whatever the existing home is made of. The 1920s and 1930s homes near downtown often have shallow foundations on clay soils, and that affects how a new room's footings are designed. The 1990s tract homes are newer but many are now entering the age range where tile roofs and exterior stucco start needing attention alongside any addition work.
Ontario's summers are genuinely extreme - daytime highs top 100 degrees F from June through September, and the city's inland position in the Pomona Valley traps heat in ways that coastal residents do not experience. Clay soils throughout much of the city expand when winter rains arrive and shrink when the heat returns, and that seasonal movement is the primary reason concrete slabs, driveways, and patio floors crack here. Santa Ana wind events every fall add another stress factor for anything attached to the exterior of a home. These are not abstract concerns - they are the conditions that determine whether a sunroom addition lasts 30 years or starts showing problems in five.
Our crew works throughout Ontario regularly, and we understand the local conditions that affect sunroom contractor work here. We pull permits through the City of Ontario Building and Safety Department and are familiar with the plan check process for residential additions in this city. Ontario's permit office handles a high volume of applications given the city's size, and knowing the standard requirements and typical review times helps us set realistic schedules for our clients.
Ontario's most recognizable landmark is Euclid Avenue - the historic boulevard lined with pepper trees that runs through the center of the city and is listed on the National Register of Historic Places. The neighborhoods surrounding Euclid have some of the oldest homes in Ontario, and we have worked on additions to those properties. On the other side of town, near Ontario International Airport and the newer subdivisions that grew along the 60 and 10 freeways, the housing is more uniform in age and construction type. We know the difference between what a 1950s ranch home on the west side needs structurally versus what a 2000s stucco house near Ontario Mills requires.
We also serve homeowners in Rancho Cucamonga to the north and Fontana to the east - so if you have neighbors in either city who are looking for the same kind of work, we cover that whole stretch of the Inland Empire.
Reach out by phone or through the contact form and we will get back to you within one business day to set up a free visit. You do not need to know exactly what you want - most people just know they want to do something useful with their patio or backyard.
We visit your property, assess the existing patio or space, look at how the home is built, and give you a written estimate covering the full project cost. Ontario homes vary a lot depending on their age and neighborhood, and we price for what your specific property actually needs.
Once you approve the estimate, we file with the City of Ontario and begin construction as soon as the permit is issued. We work around your schedule and let you know exactly what to expect during each phase - including whether you need to be home for any part of the work.
We pass the final inspection with the City of Ontario and walk through the completed room with you before closing out the job. The permitted addition is recorded on your property, which protects you when you sell and confirms the work was done to code.
We serve all of Ontario - from Euclid Avenue to the south side - and respond to every inquiry within one business day.
(909) 515-5768Ontario is a city of about 185,000 people in San Bernardino County, roughly 35 miles east of downtown Los Angeles and one of the larger cities in the Inland Empire. The city has a distinctly layered housing stock: the oldest neighborhoods near downtown and Euclid Avenue include Craftsman bungalows and Spanish Colonial homes from the 1920s through 1940s, while the mid-city neighborhoods have the postwar ranch homes built from the 1950s through the 1970s. The southern and eastern parts of the city feature newer subdivisions from the 1990s and 2000s - mostly two-story stucco homes with tile roofs that are now entering the age where repairs and improvements start coming due.
Ontario is also a major commercial and logistics hub - Ontario International Airport and a large warehouse and distribution network make it one of the most active inland freight centers in the western United States. The city's working population includes a broad range of incomes and housing situations, with roughly half of all units owner-occupied and half renter-occupied. Homeowners here tend to be practical about investments - they want improvements that add real value and hold up over time. We serve Ontario homeowners throughout the city and also work in neighboring Rancho Cucamonga and Fontana.
Convert your existing patio into a fully enclosed sunroom space.
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Learn MoreCall us today or submit a contact form. We serve all of Ontario and respond within one business day - no pressure, no obligation.