How much does it cost to convert a three-season sunroom to a four-season sunroom?

Conversion costs vary based on the size of your sunroom and what upgrades are needed. A typical conversion might cost $10,000 to $25,000, which is usually less than building a new four-season sunroom. We'll inspect your existing sunroom and provide a detailed estimate.

Can you work on sunrooms built by other contractors?

Yes, we work on sunrooms built by any contractor. We'll assess your current structure, identify any issues, and recommend the best upgrades or repairs. Whether you need new windows, better insulation, or a complete conversion, we have the experience to handle it.

How long does a sunroom conversion take?

Most conversions take 1 to 3 weeks, depending on the scope of work. Simple upgrades like replacing windows might take just a few days. More extensive conversions involving insulation, HVAC, and structural work take longer. We'll give you a clear timeline during the consultation.

Sunroom Conversions & Upgrades

Transform your existing sunroom into a more comfortable, functional space you'll use year-round.

Upgraded sunroom interior with glass ceiling in Flagstaff, AZ

If you already have a sunroom but it's not meeting your needs, you don't have to tear it down and start over. Sunroom conversions and upgrades can transform your existing space into something better. Maybe your three-season room gets too cold in winter. Maybe your old sunroom has drafty windows or a leaky roof. Whatever the issue, we can fix it and make your sunroom more comfortable, energy-efficient, and enjoyable.

Here in Flagstaff, AZ, we see a lot of older sunrooms that need attention. Some were built decades ago with outdated materials. Others were designed for a different climate and don't hold up to our temperature swings. The good news is that upgrading your sunroom is usually more affordable than building a new one from scratch. You keep the structure you have and improve the parts that aren't working.

At BoldChoice Flagstaff Sunrooms, we've been helping homeowners upgrade and convert their sunrooms since 2024. We understand what it takes to bring an old sunroom up to modern standards. Our team can replace windows, upgrade insulation, install new roofing, add climate control, and more. Your sunroom transformation in Flagstaff starts with a consultation where we assess your current space and discuss your goals.

Common Sunroom Conversions

Every conversion project is unique, but we see some common requests. Here are the most popular sunroom conversions we handle.

Three-Season to Four-Season

This is the most common conversion. You have a three-season sunroom that you love during spring, summer, and fall, but it's too cold in winter. We can upgrade it to a four-season room by replacing single-pane windows with insulated glass, adding insulation to the roof and walls, installing thermally broken frames, and connecting HVAC. The result is a sunroom you can use 365 days a year.

Screen Room to Glass Sunroom

Screen rooms are great for bug-free outdoor living, but they don't protect you from wind, rain, or temperature extremes. Converting a screen room to a glass sunroom gives you more comfort and versatility. We replace your screens with glass panels, upgrade the roof if needed, and add flooring and finishes. You get a space that works in more weather conditions.

Patio to Sunroom

If you have an open patio and want to enclose it, we can do that too. We build a frame, install windows and a roof, and turn your patio into a functional sunroom. This is technically a new build rather than a conversion, but it leverages your existing patio foundation to save time and money. Check out our patio enclosure services for more details.

Popular Sunroom Upgrades

Not every project requires a full conversion. Sometimes you just want to improve specific features of your sunroom. Here are some popular upgrades we offer.

Window replacement: Upgrade to energy-efficient insulated glass
Roof upgrades: Replace old roofing with insulated panels or modern shingles
Climate control: Add heating and cooling systems for year-round comfort
Flooring: Replace worn flooring with tile, vinyl, or hardwood
Lighting and electrical: Install modern lighting, ceiling fans, and outlets
Weatherproofing: Seal drafts, replace trim, and improve insulation

These upgrades can make a huge difference in how you use your sunroom. Better windows reduce drafts and lower energy bills. A new roof stops leaks and improves insulation. Modern climate control makes the space comfortable in any season. Even small changes, like adding ceiling fans or updating lighting, can transform the feel of your sunroom.

If you're dealing with broken glass, damaged frames, or other issues, our repair and glass replacement services can help. We handle everything from minor fixes to major repairs.

How the Conversion Process Works

Converting or upgrading a sunroom is different from building new, but the process is just as systematic. Here's what you can expect when you work with BoldChoice Flagstaff Sunrooms.

First, we inspect your existing sunroom. We check the foundation, framing, roof, windows, and overall condition. This helps us understand what's working and what needs attention. We also discuss your goals. Do you want to use the space in winter? Do you need better ventilation in summer? Are you dealing with leaks or drafts?

Next, we create a plan and provide an estimate. We'll explain exactly what work we recommend and why. You'll know what materials we'll use, how long the project will take, and what it will cost. There are no surprises.

Once you approve the plan, we schedule the work. Conversion projects typically take 2 to 6 weeks depending on the scope. We remove old components, install new materials, and finish with trim and details. Throughout the process, we keep your property clean and respect your schedule. When we're done, you'll have a sunroom that meets your needs and exceeds your expectations.

Ready to Upgrade Your Sunroom?

Let's discuss your conversion or upgrade project. Call us for a free consultation and estimate.