Four Season Screen Room in Murfreesboro TN: Costs, Materials, and What to Expect
JB's Enclosures builds custom four season screen room Murfreesboro TN homeowners choose for fully enclosed, insulated, year-round living space attached to their home. As a veteran-owned company with over 20 years building outdoor living spaces in Rutherford County, we handle design, permits, installation, and finish work on four season room installation Murfreesboro Tennessee projects from first call to final walkthrough.
By Jeremy, Owner · Last updated June 2026
What Is a Four Season Screen Room in Murfreesboro TN?
A four season screen room — also called an all season screen room or year-round room — is a fully enclosed addition to the home that can be comfortably used in every season. Unlike a three-season screen room that relies on screened walls and a roof for weather protection but isn't insulated or climate-controlled, a four season room is built to be heated and cooled, with insulated walls, insulated glazing (glass or polycarbonate panels), and a connection to the home's HVAC system or a dedicated mini-split unit.
In practice, a four season room is treated as conditioned living space by building codes — which means it requires the same permit, insulation standards, and construction quality as any other room addition. It's not a shortcut to finished square footage; it's a legitimate room addition that happens to provide a strong outdoor connection through glass and views.
For Murfreesboro homeowners, the four season room occupies a different position in the product lineup than a screened porch or basic screen room:
Screened porch / basic screen room: Usable March through November in Middle Tennessee; open to the weather; cannot be heated or cooled effectively
Three-season room: Closed structure with screens or single-pane windows; extends usable season but not comfortable in January or August
Four season room: Fully insulated, climate-controlled, usable 12 months a year; adds conditioned square footage to the home
The right choice depends on how many months per year you want to use the space and what budget range makes sense for your property. We help Murfreesboro homeowners work through that decision before we ever write a quote.
How Much Does a Four Season Screen Room Cost in TN?
Four season rooms are the most significant investment in the outdoor living category. According to HomeGuide's 2026 sunroom cost guide, a four season room addition nationally costs $20,000 to $80,000, at $100 to $350 per square foot installed.
Here's how cost breaks down by project scope for Rutherford County in 2026:
What drives the cost in Middle Tennessee specifically:
Roofline integration. A four season room addition that ties into the home's existing gable or hip roof — the most architecturally compatible approach in Murfreesboro's colonial and craftsman housing stock — costs more than a flat or lean-to roof but delivers a result that reads as part of the original home rather than a box added to the back.
HVAC approach. A ductless mini-split system for the room adds $2,000 to $5,000 and is the most common choice for Murfreesboro four season rooms — it gives independent climate control without requiring the main HVAC system to carry the load of a new addition. Extending the existing duct system is possible but requires an HVAC contractor to verify capacity.
Glazing choice. Standard double-pane insulated windows are the baseline. Low-e glass coatings — which block infrared while passing visible light — are a meaningful upgrade for Tennessee's hot summers and are our standard recommendation for south- and west-facing rooms in Murfreesboro. Polycarbonate roof panels for daylighting add cost but are increasingly popular.
Permit costs and impact fees. Under the City of Murfreesboro Building & Codes requirements, four season rooms are permitted as room additions — a more involved permit than a screen room or porch, including structural plan review, energy code compliance, and electrical inspection. Rutherford County adopted the 2024 International Codes in May 2026, including the updated energy efficiency requirements that govern insulation and glazing in conditioned additions. We include permit costs in every written estimate.
Four Season vs Three Season Screen Room for Tennessee Homes
This is the most important decision Murfreesboro homeowners face when planning an outdoor living addition, and the right answer isn't always four season.
The most common situation we see in Murfreesboro: homeowners who initially think they want a four season room realize a three-season room gives them everything they actually want — nine comfortable months of outdoor living — at half the cost. The homeowners who truly benefit from a four season room are those who want to use the space as a functional room, not just an enhanced porch: a home office with natural light, a breakfast room that doesn't require moving inside in January, a playroom where the kids can be visible from the kitchen regardless of season.
We ask questions about how you plan to use the space before we recommend four season vs three season. It's the right way to quote a project.
Materials That Work Best for a Four Season Screen Room in Tennessee
Middle Tennessee's climate — hot, humid summers and short but real winters with ice events, freeze-thaw cycling, and heavy spring thunderstorm seasons — makes material choice matter in a way it doesn't in milder climates.
Framing. Steel or aluminum framing is preferred for four season rooms in this climate over traditional wood framing — it doesn't rot, doesn't shift seasonally, and won't absorb the moisture that Middle Tennessee's humidity generates. Structural insulated panels (SIPs) are increasingly used for walls and roofs in four season additions; they outperform standard stud-and-insulation construction for both R-value and air sealing.
Glazing. Double-pane, low-e coated glass is our standard specification for Murfreesboro four season rooms. Low-e coatings on west- and south-facing glass reduce solar heat gain in summer — a meaningful benefit in a climate where a 400-square-foot room with direct afternoon sun can overwhelm a mini-split on a July afternoon. For roof glazing, polycarbonate multiwall panels are a practical alternative to glass; they're lighter, have excellent insulation value, and handle Tennessee's occasional hail better than single-layer glass.
Flooring. The floor of a four season room is exposed to more moisture cycling than interior flooring — temperature swings are greater, and condensation is more common near the perimeter. Porcelain tile or luxury vinyl plank (LVP) are the most durable choices for Murfreesboro four season rooms; both handle moisture and temperature variation without the warping or cracking risk that solid hardwood can develop in this environment.
Roofing. The roof of a four season addition needs to match or complement the home's existing roofing — both aesthetically and functionally. In Murfreesboro, most homes have architectural asphalt shingles; we match that system on gable roof tie-in additions. On flat or low-slope roof additions, TPO membrane is the right call — it handles Middle Tennessee's rainfall and UV load well and carries a strong warranty.
Year Round Screen Room Rutherford County TN: Where We Build
JB's Enclosures builds all season screen room Murfreesboro additions and year round screen room Rutherford County TN projects throughout the area. Our four season room work spans the county:
In Murfreesboro proper — particularly in Cason Trailhead, Blackman, and the established neighborhoods off Medical Center Parkway — we see consistent interest in four season rooms as home offices and dining spaces on homes where the existing back square footage is fully committed. These are typically roofline tie-in additions off the rear of the home.
In Smyrna — where newer construction has smaller standard rooms and less finished outdoor space — four season rooms are often the first major addition homeowners plan after settling in. All season room Smyrna TN builds here typically run 150 to 200 square feet with a mini-split and standard double-pane windows.
In Christiana and Eagleville — on larger rural and semi-rural properties — four season rooms are often built as standalone structures or detached additions with more design flexibility and larger footprints.
We also serve La Vergne, Nolensville, Spring Hill, Nashville, and surrounding Middle Tennessee communities for four season room projects.
Frequently Asked Questions
1. How much does a four season screen room cost in Murfreesboro?
A four season room in Murfreesboro typically runs $20,000 to $75,000 depending on size, glazing, roofline integration, and HVAC approach. The Nashville-area average for completed four season room and sunroom projects is $40,244 to $59,493 based on Homeyou data from 952 verified projects. JB's Enclosures provides free written estimates — call (615) 713-7902.
2. What is the difference between a three and four season screen room?
A three-season room is a closed but uninsulated structure — usable in Murfreesboro from March through November, but not climate-controlled. A four season room is fully insulated, heated, and cooled — usable all 12 months as conditioned living space. Four season rooms require a more involved permit, cost roughly twice as much, and add square footage to the home's conditioned area. Three-season rooms are the right choice for extended outdoor living; four season rooms are the right choice when you want a functional year-round room.
3. Is a four season screen room worth it in Murfreesboro TN?
For homeowners who plan to use the space as a functional room year-round — home office, dining room, playroom — yes. A four season room adds conditioned square footage, increases home value, and delivers a genuinely comfortable space every month of the year in Middle Tennessee's climate. For homeowners whose primary goal is bug-free outdoor entertaining, a three-season room or screened porch delivers 90 percent of the benefit at roughly half the cost.
4. How long does four season screen room installation take in TN?
A standard four season room installation in Murfreesboro takes four to eight weeks on-site for framing, glazing, roofing, HVAC, and interior finish work. Total project timeline from first call to move-in ready is typically eight to fourteen weeks, with the permit review process — which includes structural plan review and energy code compliance under Rutherford County's newly adopted 2024 International Codes — adding two to four weeks. We submit permit applications immediately upon signed approval.
5. What materials are best for a four season screen room in TN?
For Middle Tennessee's climate: aluminum or steel framing (rot-resistant, dimensionally stable in humidity), double-pane low-e glass (blocks summer solar heat gain), polycarbonate multiwall roof panels (lightweight, insulating, hail-resistant), porcelain tile or LVP flooring (handles moisture cycling), and TPO membrane on flat or low-slope roof sections. We spec every material choice for Murfreesboro's specific combination of hot summers, freeze-thaw winters, and heavy spring rainfall.
Build Your Four Season Room in Murfreesboro
If you're ready to add a year-round living space to your Rutherford County home, JB's Enclosures delivers free written estimates, upfront pricing, and permit coordination throughout Murfreesboro and the surrounding area.
Request a Free Estimate or call (615) 713-7902) today.
Related services:
Financing — Starting at $125/month
Contact JB's Enclosures
JB's Enclosures 1349 Marymont Dr Murfreesboro, TN 37129 Phone: (615) 713-7902 Email: [email protected]
Serving Murfreesboro, Smyrna, La Vergne, Eagleville, Christiana, Nolensville, Spring Hill, Nashville, and all of Rutherford County, TN.
