Four-Season Room Cost
Expect a total budget of $25,000 to $80,000 for a four-season room. That is largely due to materials, including insulation. Exterior walls, windows, doors, and roofing all need high insulation grades to retain heat and cool air during cold and warm seasons. For the high cost, you get a true extension of your living space, regardless of weather.
Three-Season Room Costs
Building a patio enclosure costs between $10,000 and $40,000. Consider it a less insulated version of a four-season space. It works well for moderate temperatures but might get hot in the summer and cold during winter.
Glass Solarium Costs
At a price between $30,000 and $75,000, a solarium is a glass room that is true extension of your outside space. Even the roof is glass, making it perfect if you want to enjoy nature from the comfort of your home. The steel structure must be strong enough to support the glass throughout the walls and ceilings.
Conservatories & Garden Rooms
At a range of $5,000 to $80,000, you have many options for conservatories. At its simplest, it's a greenhouse to grow a garden without having to depend on the weather. Comprehensive systems to regulate temperature and humidity can drive up the cost.
Atriums With Roofs
The $10,000 to $35,000 range for an atrium considers only roof construction. In most cases, the walls already exist. An atrium is an interior room with a glass roof instead of a regular one. The influx of natural light for both plants and people can make this an intriguing option on a limited budget.
Cost to Build It Yourself vs. Hiring a Professional
Building the structure yourself only costs between $500 and $1,500 when assembling a DIY kit. That compares favorably to the $5,000 to $25,000 for professional labor.
However, any DIY project has to include consideration of potential drawbacks:
Mistakes can threaten structural integrity, posing danger to anyone in the room.
The build might take longer because of your lack of experience.
Lower quality construction might require investing in the cost of sunroom repairs in the future.
Your warranty may be void if you don't use a professional installer.
Bids, Warranties & Cleanup
When hiring a contractor, make sure to get a detailed bid. All expectations should be in writing, and you should completely understand the terms and conditions of the necessary work. Talk to your contractor about what happens if you aren't satisfied with the work, or if unforeseen circumstances cause changes in the bid.
Research warranties and understand what the estimate includes. Most bids will include removal of debris and site cleanup. Make sure you will not be responsible for this step. If you are, renting a dumpster ranges between $300 and $525. Cleaning the construction site costs $280 to $670 more.
Cost of Prefab Sunroom Kit by Brand
Most prefabricated kits range between $5,000 and $30,000 for the product alone. This option works best if you don't need a custom addition and want to save some budget. Size and materials will influence costs. The brand you choose also matters.
Most Champion additions are custom, but the brand also offers some kits for $7,000 to $15,000.
For $5,000 to $20,000, Patriot offers both custom installation and conversion kits for your porch.
Company acts as a contractor for the installation
Operates in the larger St. Louis area
Available in vinyl or aluminum
Comes with lifetime transferable manufacturer's and labor warranty
Sunspace offers modular kits that you can customize to fit your home for $10,000 to $25,000.
The company installs the kit as part of the price.
Aluminum and vinyl and wooden kits available.
Limited lifetime warranty includes a 10-year manufacturer's warranty on windows and doors
A kit from this brand ranges between $5,000 and 15,000. That budget does not include installation, which you must organize yourself.
What Factors Influence the Cost to Build a Sunroom?
After materials or the prefab kit, expect to pay between $5,000 and $25,000 for a pro to build your sunroom. Where you fall on that range depends on the exact addition you're planning to make.
Think about exactly where your new structure will be. This will dictate the direction you take with design. If it's an area that gets direct sunlight, consider adding an enclosure with shading abilities.
Are you going to watch TV in your new addition? Be sure to install electrical wiring. Do you live in an area that gets a lot of snow, hail, or strong winds? Your project will need additional insulation and possibly a different design to accommodate. Do you need a heating and/or cooling system so that you can use the space year-round? These questions need consideration when planning your project. Each affects the cost of your addition.
Getting a Building Permit
Every addition to your home requires a building permit which costs between $400 and $1,800. A sunroom falls on the lower end of that range. If you build without a permit, it could result in your insurance denying a claim if something happens. You might also have problems selling the home down the road. Permission typically takes 4 to 8 weeks from the application.
Placement on a Patio or Deck
A patio enclosure costs between $9,000 and $25,000 in most cases. You can build your sunroom onto an existing patio, which means you potentially won't have to pay extra to stabilize the construction.
Do you have an existing deck or patio that you are thinking of placing the enclosure on? If so, does that deck need repair? Your foundation might need repairs to accommodate not only the new construction but also the people that will be enjoying it. You may also need to consider the cost of constructing a concrete slab at an additional cost.
Backyard Site Preparation
If you cannot build on an existing foundation, paying to clear the land and prepare the construction site ranges between $500 and $5,600. Landscaping costs between $1,400 and $5,500 and adds final cosmetic touches.
Don't forget about any major factors in your existing landscaping that might affect your sunroom. Is there a tree in the way that needs to be removed? Land excavation prices range from $1,300 to $4,600. Tree removal costs about $700 per tree.
The size of your project is one of its biggest budget factors. Contractors and other installation pros work by the hour, and larger sizes increase their workload.