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If you're budgeting for a backyard greenhouse in Colorado, the cost to install a greenhouse depends on size, site conditions, and how much of the work you want handled for you. Based on real installs we've quoted and built across the Denver metro, here's what drives the cost, and what a realistic budget looks like.
How Much Does a Greenhouse Cost to Install?
Greenhouse size is the single biggest driver of cost, and it's not just the price of the kit itself. Site prep, foundation work, and assembly labor all scale with size too. For a full-service install, we typically estimate $25 to $35 per square foot, which covers the kit, delivery inspection, site prep, and professional assembly.
Here's what that looks like across common greenhouse sizes:
| Size | Estimated Cost Range |
| 50 sq ft | $1,250 – $1,750 |
| 100 sq ft | $2,500 – $3,500 |
| 150 sq ft | $3,750 – $5,250 |
| 200 sq ft | $5,000 – $7,000 |
| 250 sq ft | $6,250 – $8,750 |
| 300 sq ft | $7,500 – $10,500 |
For a large greenhouse (300 sq ft +), all-in costs typically land in the $12,000–$15,000 range once you factor in a bigger footprint and the extra machinery often needed to lift and place larger panels.
Real example: we recently quoted an Alton greenhouse, about 130 square feet, for a Denver customer at $4,000, right in line with the per-square-foot range above.
What Drives the Cost of a Greenhouse Installation?
A few factors push a quote toward the top or bottom of that range:
- Size and panel handling. Larger greenhouses often require additional machinery to install panels safely, which adds to labor cost.
- Site accessibility. A yard that's easy to reach with equipment and materials costs less to work in than one that requires everything to be carried in by hand.
- How much leveling the ground needs. If your site is already fairly level, site prep is included. If significant grading is required, that cost goes up based on the scope of work.
- Whether you add a foundation wall. Some clients prefer greenhouses designed to sit on a raised wall rather than directly on grade. That's an optional add, and it can be contracted out separately if you want to manage that piece yourself.
What's Included When You Have a Greenhouse Professionally Installed?
This is where a lot of the real cost lives, and where a lot of people underestimate what's involved. When we install a greenhouse for a customer, that typically includes:
- Inspecting the parts and working directly with the supplier if anything arrives wrong or missing
- Site prep to get the ground level and ready for the greenhouse
- Installing the foundation frame if one comes with the kit
- Hiring a contractor to pour concrete for the foundation, if that's part of the plan
- Full assembly of the greenhouse itself
If you coordinate some of these pieces yourself, like sourcing your own site prep or foundation work, it will generally cost less. But it's worth being honest with yourself about what you're signing up for. We see a lot of people assume they'll handle the install themselves, then look at the actual specs and installation steps involved and decide they'd rather have someone experienced do it.
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Why Installation Quality Matters More Than the Price Tag
The sticker price on a greenhouse kit is only part of the real cost, and it's easy to underestimate the value of the labor that goes into a proper install. A greenhouse that isn't level or secure won't perform the way it should, and problems tend to show up later, not on install day.
Phil, co-owner and primary builder, puts it simply: installs can take longer than customers expect because we do not want to have to come back in a year to fix something that wasn't done right the first time. That's the difference between a fast install and one that's actually built to last through a Colorado winter.
How to Budget for a Greenhouse Installation
Our advice is to get a real quote before you commit to a number in your head. Every site is different, and the range above is a starting point, not a guarantee.
A few ways to think about your budget:
- Plan for the install, not just the greenhouse. A lot of people budget for the kit itself and don't factor in site prep, foundation work, or assembly labor until later in the process. Planning for the full install cost upfront avoids surprises.
- Decide how much you want to coordinate yourself. Handling your own site prep or foundation work can bring the total cost down, but it also means managing more moving pieces and more room for something to go wrong.
- Ask what's included in a quote. Not every installer inspects parts on delivery, works with the supplier on issues, or handles foundation work. Knowing what's covered helps you compare quotes accurately.
Let's Talk About Your Greenhouse Project
We can help with as much or as little of the process as you want, from inspecting your delivered kit and working with the supplier on any issues, to site prep, foundation installation, and full assembly. Get in touch with South Table Sheds for a quote based on your specific greenhouse and site.
FAQs
How much does it cost to install a greenhouse?
For a full-service install in Colorado, expect to pay roughly $25 to $35 per square foot, covering the kit, site prep, and professional assembly. A small greenhouse might run $1,250 to $3,500, while a large greenhouse can run $12,000 to $15,000 or more depending on size and site conditions.
Does the price of a greenhouse kit include installation?
No. The kit price only covers the greenhouse materials themselves. Site prep, foundation work, delivery inspection, and assembly labor are typically separate costs, which is why the all-in installed price is higher than the kit price alone.
How much does site prep for a greenhouse cost?
If the ground is already fairly level, site prep is minimal If more significant grading or leveling is needed, the cost depends on the scope of work required.
Is it cheaper to install a greenhouse myself?
Coordinating your own site prep, foundation work, or assembly can lower your total cost. However, greenhouse installation involves real technical steps, leveling, securing, weatherproofing, and many people find the specs more involved than expected once they get into the details.
