Greenhouse Tools & Calculators — Sizing, Cost, Planning, Wind
Waldenhaus · Free tools
Plan it properly before you order.
Five short calculators built on Met Office wind data, UK Permitted Development rules and realistic 2026 pricing — about fifteen minutes, end to end, before you spend a pound.
01 · Size
Greenhouse Size Calculator
Household, crops and season in — the right NORDIC footprint out, with the floor-area maths shown.
Open the tool →02 · Yield
Greenhouse Yield Calculator
A realistic annual harvest in kilograms — and what the same basket would cost at the supermarket.
Open the tool →03 · Total cost
Total Cost Calculator
Kit, base, delivery and upkeep across 10 years — set against budget aluminium and heritage glass.
Open the tool →04 · Planning
Planning Permission Checker
Permitted Development rules for all four UK nations, including conservation areas and listed curtilage.
Open the tool →05 · Wind & anchor
Wind & Anchor Calculator
Your regional wind zone from Met Office data, and the anchoring your site actually calls for.
Open the tool →— The recommended order
- 01Size — find which NORDIC matches your household and growing plans
- 02Planning — confirm that size fits your plot under Permitted Development
- 03Wind & anchor — check your site exposure and anchoring needs
- 04Total cost — see the honest 10-year figure against the alternatives
- 05Yield — see what the harvest is worth in £ across a decade
By the end of all five you'll know which NORDIC size you need, whether it needs planning approval, how it should be anchored in your wind zone, what it costs across 10 years, and what the vegetables alone bring back. About fifteen minutes, free.
— Growing under steel instead?
The SteelRoot range has its own versions of three of these tools: size calculator · cost calculator · wind & anchor checker.
— More planning resources
- Waldenhaus wooden greenhouses — main hub
- 9-step buyer's checklist — what to confirm before clicking buy
- What size greenhouse do I need? — practical UK guide
- Wooden greenhouse total cost UK 2026 — detailed breakdown
- UK Permitted Development rules for greenhouses
- Wind-resistant greenhouses — the engineering
- Greenhouse base preparation UK