Screened Room vs. Sunroom: Cost, Climate & Resale Value

You've decided you want more usable space connected to the outdoors. Now comes the real question: do you add a screened room or a sunroom?

They look similar in a listing photo. They solve different problems. And the cost gap between them can be $30,000 or more, depending on where you live and what you actually build. This guide cuts through the noise so you can make the right call for your home, your climate, and your budget before you ever call a contractor.

Key Takeaways

Screened room additions typically cost $15,000–$35,000; sunrooms range from $25,000 to $80,000+ (Angi, 2025).

In hot, humid markets like Nashville and Atlanta, screened rooms offer better natural ventilation for the 9-month outdoor season.

Sunrooms deliver a higher per-square-foot resale premium but cost significantly more to build and condition year-round.

Both additions typically require permits; HOA approval should be secured before signing a contract.

Midtown Home Improvements installs screened rooms at all five locations; sunrooms are available at the St. Louis location only.

What's the Actual Difference Between a Screened Room and a Sunroom?

According to Angi's 2025 cost guide, homeowners spend $15,000–$80,000+ depending on which type they choose — a gap driven almost entirely by the structural and mechanical differences between the two products. A screened room is an open-air aluminum-framed enclosure with mesh panels. A sunroom is a fully glazed, climate-controlled addition. The cost difference is that large because the builds are that different.

A screened room is an open-air enclosure using aluminum framing and fiberglass or aluminum mesh screen panels — no glass, no HVAC, no insulation. A sunroom is a fully enclosed, glazed addition with walls of tempered glass or polycarbonate, a finished roof, and typically a heating and cooling connection. The structural and cost difference between the two is substantial.

Think of it this way: a screened room extends your outdoor experience by keeping bugs and debris out. A sunroom adds a true year-round living space — one you can use in January just as comfortably as July. That distinction drives every downstream decision about budget, permitting, energy use, and resale value.

Three-season rooms sit in the middle: glass-enclosed like a sunroom, but not insulated or climate-controlled for deep winter. They're often marketed interchangeably with sunrooms, but they're not the same thing. See the FAQ below for a full breakdown.

How Much Does a Screened Room Addition Cost? (2026 Pricing by Market)

In 2025, Angi's cost guide put screened room additions nationally at $15,000 to $35,000, with the average project landing around $22,000 for a 200–300 sq ft enclosure using heavy-gauge aluminum framing and fiberglass screen. That range moves meaningfully by market.

Midtown Home Improvements installs custom screened rooms at all five of its locations — St. Louis, Kansas City, Nashville, Chicago, and Atlanta — using heavy-gauge aluminum framing with designer screen doors. Here's how the investment typically looks by region:

Nashville and Atlanta markets: Labor costs and high demand for outdoor living additions have pushed screened room projects in these markets toward the upper half of the national range. A well-built 200–250 sq ft enclosure attached to an existing deck or patio typically runs $20,000–$32,000 at Midtown's Nashville location and Atlanta location. The region's 9-month outdoor season means the addition gets heavy use, which makes the investment easier to justify.

St. Louis, Chicago, and Kansas City markets: The Midwest's shorter usable outdoor season (roughly May through September at its best) affects the math. Projects in these markets run $15,000–$28,000 for comparable square footage. You'll use the space, but the window of peak use is narrower than in the South.

What drives the cost spread? Size is the biggest lever, followed by the complexity of the attachment point (flat slab vs. elevated deck vs. grade-level patio), screen type (standard vs. solar-shade mesh), and whether a screen door is a standard or premium model. Premium framing finishes and custom screen colors add cost but affect long-term satisfaction.

How Much Does a Sunroom Addition Cost? (2026 Pricing by Market)

In 2025, Angi's cost data put sunroom additions nationally at $25,000 to $80,000, with four-season fully climate-controlled builds at the high end and prefabricated three-season kits at the low end. The wide spread reflects the enormous variation in glass quality, structural systems, and whether HVAC is integrated.

Sunrooms at Midtown are available exclusively at the St. Louis location. If you're a St. Louis homeowner considering this addition, here's what shapes the investment:

Glass system: Standard insulated dual-pane vs. low-e triple-pane makes a significant difference in both upfront cost and long-term energy bills.
Roof style: Solid insulated panel roofs cost more than polycarbonate panels but perform better year-round and dramatically reduce summer heat gain.
Foundation: A sunroom requires a proper foundation or reinforced slab — not just an existing deck. That structural requirement adds cost but also adds permanence.
HVAC connection: A true four-season sunroom needs either an extension of your home's existing system or a dedicated mini-split. Budget $3,000–$8,000 for this component separately if it isn't already included in your quote.

For St. Louis homeowners, a well-built four-season sunroom is a permanent addition that increases conditioned living square footage — which matters at appraisal. A screened room doesn't add to conditioned square footage and is typically categorized differently in an appraisal.

Which Addition Works Better in Hot, Humid Climates? (Nashville and Atlanta)

In Nashville and Atlanta, the outdoor living season runs roughly nine months — March through November at a minimum. That's an extraordinary window compared to Chicago or Kansas City, and it changes the calculus entirely. For most Nashville and Atlanta homeowners, a screened room delivers more usable days per year than a sunroom at a fraction of the cost.

Here's the climate argument for screened rooms in the South:

Natural ventilation beats conditioned air in shoulder seasons. April, May, September, and October in Tennessee and Georgia are spectacular. Temperatures are mild, humidity is manageable, and the last thing you want is to be sitting inside a glass box. A screened room lets the breeze through. A sunroom traps heat unless you're running the HVAC.

Summer humidity is brutal in glass enclosures. Atlanta's average July humidity runs 70–75%. Nashville isn't far behind. Without aggressive cooling, a sunroom becomes a greenhouse. A screened room, by contrast, breathes — the mesh lets air circulate while keeping insects and debris out.

The season length justifies the investment at a lower price point. With 9 months of genuine outdoor living opportunity, the per-use cost of a $22,000 screened room in Nashville is very low. You don't need a $60,000 sunroom to get value from that investment.

That said, if you want to use the space in December or January and you're not in St. Louis, you'd need a sunroom — and for Nashville and Atlanta homeowners, that service isn't something Midtown offers outside of St. Louis.

Screened Room or Sunroom: Which Has Better Resale Value?

In 2025, the National Association of Realtors' Remodeling Impact Report found that outdoor living additions — including screened enclosures and sunrooms — consistently rank among the improvements buyers find most appealing. Cost recovery at resale varies significantly between the two, and understanding which recovers better in your market matters before you commit.

Screened rooms recoup a higher percentage of their cost at resale because the investment is lower and buyer appeal for outdoor-connected spaces is broad. The Remodeling Magazine Cost vs. Value Report 2025 tracks midrange room additions at roughly 50–65% cost recovery nationally, but screened enclosures — being lower-cost improvements — often see better percentage recovery in strong outdoor-living markets like Atlanta and Nashville.

Sunrooms, particularly four-season builds, add conditioned square footage — which is the gold standard for appraisal purposes. A sunroom that increases your home's finished heated area can deliver real per-square-foot value at appraisal, something a screened room can't claim.

The honest summary: if resale is your primary driver and you're in St. Louis, a sunroom is worth serious consideration. If you want maximum buyer appeal per dollar spent across Nashville, Atlanta, Kansas City, or Chicago markets, a screened room is the stronger play.

Permitting and HOA Considerations for Room Additions

According to the National Association of Home Builders, virtually every US municipality requires a building permit for structural additions — and room additions of any type, screened or glazed, fall squarely under that requirement. Don't let a contractor suggest otherwise. Permit requirements cover structural attachment, electrical work if you're adding outlets or fans, and setback compliance (how close the addition can be to your property line).

Timeline: Permit approval runs 2–6 weeks in most markets. Nashville and Atlanta have seen longer timelines due to construction volume — factor 4–8 weeks into your project schedule.

HOA approval: If your neighborhood has a homeowners association, get written approval before signing a contract. HOAs often regulate:

Addition size relative to lot coverage limits
Exterior material and color (screen frame color, roof panel material)
Setback requirements stricter than municipal code
Aesthetic compatibility with existing architecture

Get the HOA approval letter in hand before your contractor pulls a permit. A permitted addition that violates HOA rules can force costly modifications or removal.

Property taxes: Adding conditioned square footage (sunroom) will likely trigger a reassessment. A screened room may or may not — it depends on your municipality's rules around non-conditioned structures. Ask your contractor what prior projects in your county have triggered, and consult your local assessor if the answer isn't clear.

Questions to Ask Your Contractor Before Adding Either

Before you sign a contract for either addition, these questions will separate capable contractors from ones who'll create problems:

1. Is my existing structure rated to support this addition? A screened room attached to a deck requires that the deck framing be adequate for the added load. A sunroom requires a proper foundation. Get this answered in writing before demo begins.

2. Who pulls the permit, and what's the expected timeline? Your contractor should pull the permit — not you. If they suggest you pull it yourself, that's a red flag.

3. What's your frame warranty and screen warranty? Heavy-gauge aluminum should carry a long structural warranty. Screen panels are a wear item and will need replacement over time — ask how that's handled.

4. How do you handle the transition between the new addition and my existing roofline? The flashing and drainage detail at this joint is where most leaks originate. Ask specifically about this.

5. What happens if we find rot or structural issues during demo? Get the change-order process and markup rate defined upfront.

6. Are you licensed in this state for this type of work? Contractor licensing requirements vary by state. Tennessee, Georgia, Illinois, Missouri, and Kansas all have different requirements. Verify before work starts.

Frequently Asked Questions

How much does a screened room cost in Nashville?

According to Angi's 2025 national cost data, screened room additions range from $15,000 to $35,000. In the Nashville market, strong demand for outdoor living additions and regional labor costs push most projects toward $20,000–$32,000 for a 200–250 sq ft aluminum-framed enclosure. Midtown Home Improvements serves the Nashville area — contact our Nashville team for a free estimate.

How much does a screened porch addition cost in Atlanta?

Screened porch and screened room additions in Atlanta typically fall in the $18,000–$32,000 range for standard residential projects, based on Angi's 2025 national cost data and regional demand factors. Site complexity — elevated deck vs. grade-level patio, attachment point condition, screen type — affects the final number. Midtown's Atlanta location provides free in-home estimates for screened enclosures.

Is a screened room or sunroom a better investment?

It depends on your goals. Screened rooms deliver a higher cost-recovery percentage at resale in outdoor-living markets like Nashville and Atlanta, per the Remodeling Magazine Cost vs. Value Report. Sunrooms add conditioned square footage and appraisal value but cost significantly more. For most homeowners outside of St. Louis, a screened room is the stronger value-per-dollar investment.

Do you need a permit to add a screened room or sunroom?

Yes — the National Association of Home Builders reports that structural room additions require permits in virtually every US jurisdiction. Permit requirements cover structural attachment, electrical work, and setback compliance. HOA approval is a separate process and must be completed before your contractor pulls a permit. Midtown handles permit coordination as part of the project scope.

What is the difference between a three-season room and a sunroom?

A three-season room is a glass-enclosed addition designed for spring, summer, and fall use — it has glazed walls but no insulation or climate-control for winter conditions. A four-season sunroom is fully insulated with HVAC, making it usable year-round. Angi's 2025 cost data shows three-season rooms typically run $15,000–$30,000, while four-season builds reach $40,000–$80,000+ depending on size and glass specification.

How long does a screened room addition take to build?

Most screened room additions take 1–3 weeks of active construction once permits are approved and materials are on-site. According to Angi's project timeline data, total timeline from signed contract to first use typically runs 6–12 weeks when permit processing (2–6 weeks) and material lead time are factored in. Projects involving structural repairs to an existing deck or patio run longer.

Can a screened room increase home value in Georgia or Tennessee?

Yes. The National Association of Realtors' Remodeling Impact Report consistently ranks outdoor living improvements among the highest buyer-appeal additions, particularly in Southern markets with long outdoor seasons. While screened rooms don't add conditioned square footage, they increase functional living area and buyer appeal. In Georgia and Tennessee, where buyers actively prioritize outdoor spaces, a well-built screened enclosure supports — and in many cases improves — resale positioning.

Ready to Add a Screened Room or Sunroom?

The right addition depends on where you live, how long your outdoor season runs, and what you want the space to do.

St. Louis homeowners: Midtown installs both screened rooms and four-season sunrooms from our St. Louis location. If you're weighing both options and want an in-home consultation, get a free sunroom estimate here.

Nashville, Atlanta, Chicago, and Kansas City homeowners: Midtown installs custom screened rooms at all five locations. Our heavy-gauge aluminum framing and designer screen options are built for the long haul. Get a free screen room estimate here.