
Top-Rated 3 Season Room Builders in Avon, CT
Excellence Masonry and Contracting is a top-rated builder of 3 season rooms in Avon, CT. We create stunning, functional screened-in porches and sunrooms with meticulous attention to detail.
A 3-season space in Avon allows you to enjoy the landscape while being protected from insects and weather. We build these structures with code-exceeding framing and integrated moisture barriers to ensure long-term durability. By utilizing high-performance screen systems and insulated flooring, we extend the usability of the space throughout most of the year. Our design-build team focuses on a seamless architectural match with your home, creating a functional retreat that adds significant living area and value to your property.


Prioritizing Architectural Harmony and Site Stewardship
There are many construction, landscaping, outdoor living, and design companies to choose from- here is what makes us different.
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Our Approach is Thorough and Integrated – As a design-build firm, we eliminate the gap between planning and execution, ensuring every project or service is assessed and delivered with maximum efficiency and zero oversights.
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The Team We Have is Experienced and Robust – Backed by a 25-year family legacy and a crew with up to 50 years of expertise, our team of long-term employees and trusted partners provides a level of craftsmanship that only comes from decades in the field.
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Industry-Leading Warranties and a Client for Life Guarantee – We provide warranties that far exceed state minimums. Our "Client for Life" commitment means we intend to stand by you, and our work, well beyond one project or its warranty. Our goal is to build a relationship, and become a trusted resource for you, year after year. We remain open to address issues, answer questions, assist with maintenance, or repairs, no matter what. Our business is relationship based, not transactional.
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Transparency and Consistent Communication – We keep you in control through complete education and daily updates. From the first call to the final walkthrough, we ensure all costs, options, and timelines are fully transparent.
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Commitment to Professional Responsibility and Top-Quality – We take full ownership of project or service management so you don't have to. Our focus is on delivering the highest feasible standard within your budget, supported by premium partners and a high-performance process.

A Systematic Design-Build Workflow for Avon Estates
Of course, every project, service and every situation is different, and so is our approach. Below is a general and simplified outline of our process. We can also bid and build to your preexisting plan or design.
1.
Discovery/Consultation
We assess your home’s existing architecture and discuss your vision for extending your indoor living outdoors. We evaluate site orientation for sun exposure, discuss material options for flooring and screening, and identify potential tie-ins to your home’s roofline. You'll receive a rough estimate and preliminary design considerations.
2.
Design / Planning
During this phase, we finalize the engineering of the enclosure, focusing on moisture barriers and structural framing that exceeds local codes. We value-engineer the flooring (masonry vs. composite) and establish a construction plan that ensures a seamless architectural match. Project pricing and utility requirements are solidified here.
3.
Construction / Service
Our team executes the build with a focus on a "tight" envelope and structural precision. We manage every phase—from the foundation to the final trim—with consistent communication. Expect an efficient construction experience as we integrate high-performance screen systems or window units, always respecting your property.
What exactly is a '3 season space'?
A 3 season space, or three-season room, is an enclosed area designed for enjoyment from spring through fall. Unlike a four-season room, it is not heated or insulated to the same standards as the main house, making it a more cost-effective way to create a protected outdoor living area.
FAQ's
What are the benefits of adding a 3 season space?
The main benefit is enjoying the feeling of being outdoors without dealing with insects, rain, or harsh sun. It extends the usability of your outdoor space, adds valuable square footage to your home, and creates a perfect transitional area between your house and your yard or patio.
Do I need a permit to build a 3 season room?
Yes, almost certainly. A 3 season room is a structural addition to your home that involves a foundation, framing, and a roof. This type of project requires detailed plans to be submitted to your local building department for a permit before any work can begin.
What kind of foundation is needed for a 3 season room?
The foundation must be stable and frost-proof. This typically involves installing concrete piers or footings that extend below the frost line, similar to a deck. In some cases, it can be built upon a reinforced concrete slab, like an existing patio that was properly constructed.
Can you convert my existing deck or patio into a 3 season room?
Yes, this is a very popular option. If your existing deck or patio's foundation is structurally sound and up to code, we can often build a roof and screen system directly on top of it. We will always perform a thorough inspection to ensure the existing structure can support the new addition.
4.
Walk-Thru, Clean-Up & Maintain
We perform a final inspection of all seals, hardware, and transitions. We’ll walk you through the space to discuss seasonal care and operation of the screening/window systems, confirming the project is a functional, sophisticated addition to your home.
Testimonials




What are the benefits of adding a 3 season space?
The main benefit is enjoying the feeling of being outdoors without dealing with insects, rain, or harsh sun. It extends the usability of your outdoor space, adds valuable square footage to your home, and creates a perfect transitional area between your house and your yard or patio.
Can you convert my existing deck or patio into a 3 season room?
Yes, this is a very popular option. If your existing deck or patio's foundation is structurally sound and up to code, we can often build a roof and screen system directly on top of it. We will always perform a thorough inspection to ensure the existing structure can support the new addition.
Do I need a permit to build a 3 season room?
Yes, almost certainly. A 3 season room is a structural addition to your home that involves a foundation, framing, and a roof. This type of project requires detailed plans to be submitted to your local building department for a permit before any work can begin.
What kind of foundation is needed for a 3 season room?
The foundation must be stable and frost-proof. This typically involves installing concrete piers or footings that extend below the frost line, similar to a deck. In some cases, it can be built upon a reinforced concrete slab, like an existing patio that was properly constructed.
What exactly is a '3 season space'?
A 3 season space, or three-season room, is an enclosed area designed for enjoyment from spring through fall. Unlike a four-season room, it is not heated or insulated to the same standards as the main house, making it a more cost-effective way to create a protected outdoor living area.
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