Hoop House vs Greenhouse: Cost per Square Foot and Season
Two gardeners on the same street, same budget, same zone-6 winters. One spent $700 on a shiny 8×8 polycarbonate greenhouse. The other spent $700 on a 14×40 hoop house and covered eight times the ground. Neither made the wrong call — they were solving different problems. The confusion is that both structures get shoved under the word "greenhouse," when what actually separates them is dollars per square foot on one axis and degrees of protection on the other.
The core difference, in one table
Strip away the marketing and the two structures diverge on five things that actually change how you garden.
| Hoop house / high tunnel | Rigid greenhouse | |
|---|---|---|
| Covering | Single or double poly film | Polycarbonate or glass panels |
| Cost per sq ft | $0.50–2.50 | $8–25 |
| Insulation | Minimal — a few degrees | Moderate to good |
| Best role | Extend the season on lots of ground | Control climate in a small area |
| Heating | Rarely worth it — too leaky | Practical to heat |
| Lifespan of covering | Film ~4 yrs (double poly), then re-cover | Panels 10–25 yrs |
Why the cost-per-foot gap is so wide
A hoop house is bows and plastic. You bend metal or PVC into arches, stretch film over them, and clip it down. There is no glazing to buy by the panel, no precision frame, no foundation. That is why a 700-square-foot tunnel can cost less than a 64-square-foot rigid greenhouse — you are paying for air under plastic, not a manufactured room.
That same simplicity is the limitation. Single-layer film leaks heat almost as fast as it gathers it, so a hoop house on a clear night can drop nearly to outside temperature by dawn. Growers who want real winter protection run double poly with a small blower inflating the gap — the trapped air layer adds insulation and cuts the film's flapping, which is also what stretches a single covering to around four years.
What each one does to your season
Neither structure is magic. Both work by trapping daytime sun and slowing nighttime loss; they just do it to different degrees.
| Goal | Hoop house | Greenhouse |
|---|---|---|
| Start spring crops early | ~3–5 weeks sooner | ~4–8 weeks sooner |
| Push fall harvest later | ~3–6 weeks later | ~4–8 weeks later |
| Grow cold-hardy greens in winter | Yes, unheated, in mild zones | Yes, more reliably |
| Grow tender crops mid-winter | No — not without heat it cannot hold | Yes, if heated |
Which to build, without a test field of our own
Nobody here framed a hoop house last spring — the figures are compiled from suppliers and university extension publications rather than a farm of our own — but the decision rule is clean enough that field trials would only confirm it:
- Choose a hoop house if you have space, want to cover a lot of ground cheaply, and mainly need to extend the shoulder seasons and grow hardy greens. It is the better dollar-per-plant deal by a wide margin.
- Choose a greenhouse if your yard is small, you want to heat the space, you are propagating tender plants, or you want a structure that looks permanent and lasts decades. It is control in a box.
Many serious gardeners end up with both — a rigid greenhouse for propagation and tender starts, a hoop house for volume. If you are still choosing a rigid unit, the tiers are broken down in best backyard greenhouse reviewed.
Common mistakes
- Expecting a hoop house to grow tomatoes in January. Unheated single-film tunnels barely beat frost. They extend seasons and hold hardy greens; they do not create summer.
- Trying to heat a leaky tunnel. Pumping propane or electricity into single-layer film is money out the seams. If you need heat, you needed a greenhouse.
- Building a hoop house without wind bracing. A long tunnel is a wing. Without diagonal bracing and end-wall anchoring, a storm peels it open.
- Comparing the two on sticker price. A $700 tunnel and a $700 greenhouse cover wildly different ground. Compare on cost per usable square foot, then on the protection you actually need.
- Skipping ventilation on a tunnel. Roll-up sides are not optional. A closed hoop house overheats on a sunny 55°F day just like a greenhouse does.
FAQ
Is a hoop house cheaper than a greenhouse?
Dramatically, per square foot — roughly $0.50–2.50 versus $8–25 for a rigid greenhouse. A hoop house buys you far more covered ground for the same money. What you give up is insulation and the practicality of heating, so the "cheaper" one is only the right answer if season extension, not year-round control, is the goal.
Can you grow in a hoop house year round?
In mild climates you can carry cold-hardy greens like spinach, kale, and mache through winter unheated, especially with row covers layered inside. In cold zones, an unheated hoop house goes dormant in deep winter — it protects and extends, but it will not keep tender crops alive through a hard freeze without heat it cannot really hold.
How long does hoop house plastic last?
Greenhouse-grade film lasts about four years on a double-poly, inflated tunnel and somewhat less on single-layer, before UV haze and wear force a re-cover. Budget the film as a recurring cost every few years rather than a one-time purchase, at roughly $0.10–0.30 per square foot each time.
Which is better for a small backyard?
Usually a rigid greenhouse, because small yards reward the control and durability of panels over raw covered area. Hoop houses shine when you have room to sprawl. If your space is tight and you want to heat it, the greenhouse is the better fit despite the higher cost per foot.
Related:
General educational information, not professional horticultural advice. Prices, energy costs, plant hardiness and local climate vary by region and season; check figures against current listings and your local extension office before spending.