Santa Monica Sunrooms & Patios is a licensed sunroom contractor serving Brentwood, CA, building four-season sunrooms, custom room additions, and patio enclosures for the large custom homes and estate properties that define this neighborhood. We have served Westside homeowners since 2015, handle all LADBS permitting in-house, and design every room to match the quality of the home it is being added to.

Brentwood homeowners who want a usable room twelve months out of the year need a fully conditioned, insulated enclosure - not a screen room or a basic three-season add-on. Our four-season sunrooms are built with insulated glass, climate-controlled framing systems, and interior finishes that integrate with the quality level of large custom homes in this neighborhood.
Brentwood homes tend to be large, architecturally distinctive, and built on generous lots - the kind of property where a catalog sunroom kit looks out of place the moment it goes up. A custom-designed room that follows the existing roofline, matches the exterior finish, and integrates with the floor plan feels like it was always part of the house.
Many Brentwood homes have substantial rear yards with existing patios or pool decks that could support a proper room addition. A sunroom addition that extends the rear of the house adds permanent, permitted square footage and a year-round indoor-outdoor living space that fits naturally into how Brentwood residents use their homes.
Older Brentwood homes often have covered rear patios or pergola-covered entertaining areas that are exposed to wind, morning marine layer, and dust from the nearby canyons. Enclosing an existing covered patio is one of the faster and more cost-effective routes to adding a livable room without a full ground-up addition.
Brentwood's mild, mostly sunny climate makes it an excellent setting for a glass-roof solarium - a room designed to maximize natural light and draw the outdoors in without the noise, dust, and temperature swings of a fully open space. Proper UV-filtering glazing is important given the intensity of Southern California sun during peak summer months.
Some Brentwood homes have existing enclosures - older screen rooms, aluminum-framed additions, or single-pane glass rooms - that were built decades ago and no longer perform well or match the current aesthetic of the house. Remodeling an existing sunroom to current insulation standards and updated framing systems is often faster to permit than a new addition and gives the room a much longer useful life.
Brentwood is one of the most affluent residential neighborhoods on the Westside of Los Angeles. Homes here range from large postwar estates on oversized lots to newer custom builds set back from tree-lined streets. The property values and the expectations that come with them mean a sunroom addition in Brentwood needs to be built to a standard that matches the home - not just structurally sound, but visually integrated and finished to the same quality level as the rest of the house. Contractors who treat every sunroom as the same job regardless of the property will produce a result that looks like it does not belong on a Brentwood home.
The climate in this neighborhood also has specific characteristics worth understanding. Brentwood sits close enough to the coast to receive the marine layer that rolls in from Santa Monica Bay during spring and early summer - enough to keep exterior surfaces damp most mornings and to matter for frame material selection and seal specifications. Larger lots with mature trees mean drainage around the foundation and the proposed room footprint needs to be assessed carefully before construction begins. The City of Los Angeles zoning code places lot coverage limits on residential properties that affect how much square footage a new room can add, and LADBS plan check for large custom homes can involve more back-and-forth than a standard tract home permit. We have done this work in Brentwood before and know what to expect.
Our crew works throughout Brentwood regularly, and we understand the local conditions that affect sunroom contractor work here. We pull permits through the Los Angeles Department of Building and Safety and are familiar with the residential zoning rules that apply in Brentwood - including setback requirements and lot coverage calculations that can affect the size and placement of a new room addition on a large lot. Because many Brentwood homes are custom-built rather than tract homes, LADBS plan check here often involves more detailed structural review than a standard addition permit. We prepare plans that account for those review criteria from the start to avoid delays.
Brentwood sits between San Vicente Boulevard to the east and Barrington Avenue to the west, with Sunset Boulevard running through the northern part of the neighborhood. The residential streets - Mandeville Canyon Road, Saltair Avenue, Carmelina Avenue, and the quieter canyon-side blocks - are lined with mature trees and substantial homes set well back from the curb. San Vicente Boulevard's parkway and the proximity to the Brentwood Country Club and the Getty Center make this one of the most recognizable and well-established neighborhoods on the Westside.
We also serve homeowners in neighboring Pacific Palisades to the west, where hillside lots and fire-zone requirements add additional complexity to sunroom projects. If your home sits near the Brentwood-Palisades boundary or you are comparing contractors across both neighborhoods, we work regularly throughout this part of the Westside. We also serve Beverly Hills to the east, where similarly high property values and custom home stock create comparable project requirements.
Call us or submit the contact form online and we will follow up within one business day. We ask a few quick questions about the property and your goals so the site visit is focused and productive.
We visit the property, review setbacks and lot coverage, and assess the structural tie-in and drainage conditions around the proposed location. The written estimate covers all costs including permit fees, so there are no hidden additions after you sign.
We prepare architectural and structural plans and submit them to LADBS on your behalf. Plan check for room additions in Los Angeles typically takes six to ten weeks. We manage all communication with the plan checker and respond to any corrections so you do not have to track the process yourself.
Once permits are approved, construction runs four to eight weeks depending on room size and complexity. We schedule all LADBS inspections and walk you through the finished room at completion - confirming everything works and all finishes meet the agreed standard before we close out the project.
We serve Brentwood and the surrounding Westside neighborhoods. Call us or fill out the form and we will respond within one business day.
(424) 268-8851Brentwood is an upscale residential neighborhood in the western part of Los Angeles, bounded by Sunset Boulevard to the north, the 405 Freeway to the east, Wilshire Boulevard to the south, and Pacific Palisades to the west. The neighborhood is almost entirely single-family residential, with large homes on generous lots and tree-lined streets that give it a quieter character than most of the city surrounding it. San Vicente Boulevard runs through the neighborhood with a wide, tree-planted median that is a landmark for runners and cyclists from across the Westside. Brentwood Country Mart, a small collection of shops and restaurants near the intersection of Brentwood Place and 26th Street, is a well-known gathering spot for local residents.
The housing stock in Brentwood is a mix of mid-century custom homes, ranch-style properties built in the 1950s and 1960s, and newer custom construction on lots that have been torn down and rebuilt. Many homes sit on lots large enough to support pool areas, rear entertainment spaces, and significant landscaping - the kind of property where an outdoor living area is a genuine part of the home, not an afterthought. Brentwood borders Santa Monica to the southwest and sits close to the Getty Center and the trailheads that lead into the Santa Monica Mountains. Learn more from the Brentwood, Los Angeles Wikipedia article.
Add beautiful, light-filled living space to your home without major construction.
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Learn MoreWe handle the full permit process and design custom sunrooms that match the quality of Brentwood homes. Responding within one business day.