GreenhouseGrid
Independent greenhouse buying data

Find the right greenhouse.Know the real cost.

Compare greenhouse specifications, retailer prices, shipping costs and real ownership costs across brands and sellers.

An independent database of 34 greenhouses, with prices checked daily across the retailers we track — so a decision worth thousands stops depending on fifteen browser tabs and a spreadsheet.

  • We don't sell greenhouses
  • Specs keep their source
  • Ranking is never sold
Planta Sungrow 20 (Gen III) · 10x20
3 sellers, checked today Advertised
  1. Dive To GardenLowest today $3,750
  2. Greenhouse Megastore $3,995
  3. Planta Direct $4,250

Same greenhouse, same day — $500 apart. Freight is extra on both, and can move the answer again.

Real prices, from our daily check. Advertised totals exclude shipping unless the retailer states it.

The problem

A greenhouse is not one number.

Models vary in size, glazing, structural rating, ventilation, warranty, freight, foundation and assembly — and almost none of it is published in a form you can compare side by side. That is the gap we close:

Compare greenhouses
Specifications normalized across brands, so two products are described in the same units before you try to choose between them.
Compare real prices
Retailer pricing and shipping cost together — and, as the record builds, how today's price compares with what the product normally sells for.
Understand total cost
Kit, freight, site prep, foundation, assembly, electrical, heating, ventilation and accessories. The project, not the box.
Buy with more confidence
See where each number came from, and compare the sellers themselves — not only the products they happen to list.
34greenhouses covered
11with prices tracked daily
5retailers compared

Size, frame, structural rating, anchoring and warranty for each one, with the price at every retailer we track. Compare them.

Status

What works today

Marked honestly, so you can see what works today and what is still coming.

Greenhouse database

Live

34 greenhouses across 26 brands in one consistent schema, each specification traced to the document it came from.

Price tracking

Live

Checked daily across 5 retailers, recorded over time — so a “sale” can be measured against what the thing normally costs.

Side-by-side comparison

Live

Size, frame, structural rating, anchoring, warranty and every tracked price, in one table. See it.

Delivered cost

Partly working

Shown wherever a retailer publishes its shipping cost. Many quote freight only at checkout, and we will not invent a number to fill the column.

True cost calculator

Still to come

Estimate the full project: foundation, site prep, installation, electrical, heating, ventilation and accessories.

Price alerts

Live

Tell us your model and your number. We email you when a greenhouse reaches the price you are willing to pay, then stop.

Independence

You should be able to tell a claim from a fact.

We want you to know the difference between what a manufacturer claims, what a retailer says, what owners actually experienced, and what we think. Our goal is not to rank a product first because it pays the highest commission. Every specification carries one of four labels, and we do not blur them:

Manufacturer spec

Published by the manufacturer, linked to the document it came from. Their claim, not our endorsement.

Owner reported

Submitted by an identified owner about a greenhouse they actually installed.

Tested by us

Something we physically tested. We will never use this label otherwise.

Editorial

Our interpretation of sourced information, clearly marked as opinion.

The database is built from manufacturer documentation, product manuals, retailer listings and pricing recorded over time. Where a manufacturer publishes nothing, we say so rather than guessing.

  • Dimensions
  • Floor area
  • Glazing
  • Panel thickness
  • Frame
  • Snow load
  • Wind rating
  • Vents
  • Foundation
  • Warranty
  • Assembly time
  • Freight
  • Lead time
  • Availability
On structural ratings Manufacturer-published snow-load and wind ratings are provided for comparison only. Local wind, snow, permitting, foundation and building requirements vary. Always confirm applicable requirements with the manufacturer and your local building authority before installation.

How we work →

Why this exists

Nobody neutral has put this in one place.

Manufacturers know their own products. Retailers know what they stock. Owners know what actually happened after delivery. Every one of them has a stake in which greenhouse you buy.

We are the layer that sits above all of them — so you can compare products, understand real costs, track prices, and decide for yourself.

Set a price alert More about the project