
Simi Valley Sunrooms & Patios builds four season sunrooms, patio enclosures, and screen rooms for Thousand Oaks homeowners throughout the Conejo Valley. We handle permits, HOA submittals, and construction from start to final inspection.

Thousand Oaks summers are long and hot, and the city gets enough winter chill to make unheated rooms uncomfortable from December through February. A four season sunroom with full insulation and climate control solves both problems in a single addition.
Ranch and Spanish-style homes in Thousand Oaks often have covered patios that are a single step away from a proper enclosure. We convert existing covered patios into weathertight rooms using the existing roofline where possible to keep costs down.
Hillside homes in areas like Lynn Ranch or Conejo Oaks often need sunroom designs that work with a sloped lot or an irregular footprint. We design each room to fit the actual property rather than forcing a standard kit onto a non-standard site.
Thousand Oaks sits adjacent to open space preserves that bring insects into residential yards during warmer months. A screened room lets you enjoy the outdoor air and hillside views without the bugs that come with the territory.
Thousand Oaks has more than 280 sunny days per year, which makes a glass-roof solarium a practical choice for homeowners who want natural light to fill the space year-round without sacrificing weather protection.
Homes built in Thousand Oaks during the 1980s and 1990s sometimes have older sunrooms with single-pane glass that lets too much heat in during summer. We upgrade the glazing, insulation, and frames to bring these rooms up to current comfort and efficiency standards.
Thousand Oaks was largely developed between the 1960s and 1990s as a planned city in the Conejo Valley. Most of its homes are single-family stucco construction on medium to large lots, and a significant number sit on or near hillsides with sloped yards, clay soils, and retaining walls. Clay soils are common in Ventura County and swell when wet and shrink when dry, which can cause concrete to shift over time. Any sunroom or enclosure needs a foundation assessment before installation - skipping that step leads to cracking frames and doors that will not close squarely within a few years.
Thousand Oaks is also in a high fire hazard severity zone, and many neighborhoods were directly affected by the Woolsey Fire in November 2018. Homeowners here are increasingly aware of fire-resistant construction choices, and building departments and insurance carriers are paying attention. We use tempered glass and non-combustible framing as standard on hillside and fire-adjacent properties, which addresses both the safety concern and the coverage question at the same time.
Our crew works throughout Thousand Oaks regularly, and we understand the local conditions that affect sunroom contractor work here. We pull permits through the City of Thousand Oaks Community Development Department and are familiar with its inspection schedule and plan check process, which differs from neighboring Simi Valley or unincorporated Ventura County areas.
Thousand Oaks is spread across the Conejo Valley, with Thousand Oaks Boulevard running east-west through the commercial spine of the city. Residential neighborhoods fan out to the north and south, with hillside communities like Lynn Ranch and Conejo Oaks backing up to open space. Amgen's campus anchors the central area, and the Conejo Valley Unified School District serves families spread across both Thousand Oaks and neighboring Newbury Park. We know this geography well and route our crews efficiently across the city.
We also serve the adjacent community of Newbury Park, CA with the same team. Newbury Park is technically part of Thousand Oaks but has its own neighborhood identity, and many homeowners there are surprised to learn they are under the same city permit jurisdiction.
Call or fill out the form and we respond within one business day. A quick description of your lot and what you have in mind is enough to get started - no drawings or specs required at this stage.
We come to your Thousand Oaks property to assess the site conditions - soil type, slope, existing slab, HOA requirements - before writing a number. The estimate includes all labor, materials, and permit fees with no hidden costs.
We file the permit application with the City of Thousand Oaks and contact any required HOA review boards. Construction is scheduled after permit approval, and we give you a calendar with start and finish dates.
We coordinate the final city inspection and walk you through the completed space. You receive the signed permit card and all close-out documents, which protect your home's sale value when you eventually list it.
Free estimates for all Thousand Oaks and Conejo Valley homeowners. No obligation.
(805) 261-5995Thousand Oaks is a city of about 126,000 people in the Conejo Valley, one of the more affluent communities in Ventura County. It was developed as a planned city beginning in the early 1960s, and most of its housing was built between 1965 and 1995 - primarily single-story ranch homes and California Spanish-style stucco houses with tile roofs. Hillside neighborhoods like Lynn Ranch and Conejo Oaks back up to the Santa Monica Mountains National Recreation Area, giving residents views of open land while creating the site conditions that come with hilly terrain. Amgen, one of the largest biotech companies in the world, has been headquartered here since 1980 and is the city's dominant employer. The Gardens of the World is a well-known local landmark near the center of the city.
The city encompasses both Thousand Oaks proper and Newbury Park, which sits to the west and shares the same city government and permit jurisdiction. We serve homeowners throughout both communities. Our work in the broader area also extends into Newbury Park and north into Moorpark, giving us consistent coverage across the western end of the county.
Add beautiful, permanent living space to your home with a custom sunroom.
Learn MoreExpert construction services delivering durable, code-compliant sunrooms.
Learn MoreKeep insects out while enjoying fresh air in a screened outdoor room.
Learn MoreConvert your existing patio into a fully enclosed, year-round sunroom.
Learn MoreTurn your deck into a comfortable, weather-protected sunroom addition.
Learn MoreEnclose your patio to create a private, protected outdoor living area.
Learn MoreGlass-roof solariums that fill your home with natural light year-round.
Learn MoreShade your outdoor area with a durable, professionally installed patio cover.
Learn MoreCall now or submit the form - we respond within one business day and there is no obligation to proceed.