15 Questions to Ask a Greenhouse Supplier Before You Order

GREENHOUSE BUYER’S REPORT
15 questions to ask a greenhouse supplier before you order
A greenhouse can look straightforward on a product page, yet the important decisions often sit behind the headline image. Asking focused questions before ordering helps you compare like with like, prepare the site properly and understand where responsibility lies after purchase.
The short answer: ask for clarity, not reassurance
The most useful questions establish exactly what greenhouse you are comparing, what is included in its stated configuration and what you need to arrange yourself. Ask for answers in writing where a point affects your order, installation sequence, future maintenance or the scope of support.
A good supplier should help you identify relevant information without making decisions about your site on your behalf. Use their reply alongside measurements, photographs and a site plan. If an answer remains vague, ask what document, drawing or condition would confirm it before you commit.

01
Product identity
Confirm the model, dimensions, glazing, frame finish, doors, roof ventilation and optional items rather than comparing a single headline image.
02
Site readiness
Establish the required base, access route, fixing approach and whether your chosen location introduces planning, drainage or neighbouring-property considerations.
03
Support trail
Ask how missing parts, installation queries, maintenance needs and warranty matters are reported, assessed and documented after delivery.
A practical due-diligence guide for British gardens, from first specification to after-sales support.
Buying a greenhouse is partly an exercise in imagining the growing space you want and partly a careful purchasing decision. Size, appearance and colour matter, but they do not explain the whole offer. The strongest conversations with a supplier cover the exact configuration, what arrives with it, what the site must provide and how future questions will be handled.
This guide groups the questions to ask a greenhouse supplier into practical stages, so you can take notes while comparing options. It is not a substitute for reading product information or written terms. Instead, it helps you turn broad promises into clear answers that can be checked against your garden, budget and preferred installation route.
For British homeowners, context matters. A sunny boundary may favour a wall-attached design; an open plot may call for more thought about access, foundations and exposure. Ask suppliers to respond to your particular site rather than relying on a general description. A considered answer now is usually more useful than an assumption discovered once work has begun.
Inspection 01 · INSPECTION 01
Start with the exact greenhouse configuration
First ask: what precisely is included in the greenhouse I am considering? A supplier should be able to identify the model and show how its dimensions are measured. Ask whether the stated footprint refers to the base, the widest roof point or another datum. This is especially important where paths, beds, walls or boundaries leave little tolerance around the proposed position.
Then ask which visible details are standard and which are selected additions. Doors, glazing choices, vents, shelving, rainwater components and finish can alter both the look and the practical use of the building. Request a written configuration summary before you compare quotations. It creates a useful reference if you later adjust one element or receive information from more than one member of staff.
- Ask for a dimensioned drawing that distinguishes overall external measurements from the base area needed for installation.
- Check whether photographs show the same size, colour and accessory combination as the greenhouse under discussion.
For a freestanding starting point, explore the standard Classic greenhouse range and ask which configuration suits the scale of your plot.
Inspection 02 · INSPECTION 02
Check whether the location really suits it
Ask the supplier what information they need to comment meaningfully on your intended location. A rough sketch, photographs from several angles and measurements to nearby walls can reveal issues that a postcode cannot. Discuss orientation, shade through the day, access around the structure and where you expect to stand while opening doors, carrying plants or cleaning glass.
For a greenhouse near a house, ask about the interface with the existing building rather than treating it as a simple gap to fill. Consider rooflines, downpipes, opening windows and the condition of the supporting wall. The supplier can explain the product requirements, but a homeowner may still need independent advice on the building fabric, drainage and any implications of making fixings.
Also ask whether the base information changes when you select different door positions, vents or accessories. Confirm which drawing revision applies to your final order, so groundwork is not prepared from an earlier configuration.
- Measure clear routes from street or driveway to the proposed base, including gates, steps and tight corners.
- Photograph adjoining walls, service covers and downpipes so the supplier can identify questions needing further investigation.
Where a garden wall is central to the plan, consider a wall-attached full-size regular Lean-To greenhouse and discuss its relationship with the host building.
Inspection 03 · INSPECTION 03
Ask what the base must achieve
A greenhouse is only as straightforward to install as the base beneath it. Ask what type of base is appropriate for the chosen model, how level it needs to be and which dimensions must be achieved before the delivery or installation stage. Clarify whether the supplier provides a base plan, fixing positions or instructions for preparing the perimeter.
Do not assume that a hard-looking area is automatically suitable. Existing paving may be uneven, poorly supported or arranged in a way that does not match fixing points. Ask who verifies readiness and at what stage. If you are appointing a landscaper or builder, give them the supplier’s current drawings rather than relying on approximate dimensions copied from an early conversation.
- Request the latest base drawing before any concrete, paving or edging is ordered or laid.
- Ask whether finished ground levels, drainage falls and fixing zones require particular attention for your chosen configuration.
A measured base plan is particularly valuable when selecting a standard Classic greenhouse model for a new freestanding garden setting.
Inspection 04 · INSPECTION 04
Make delivery questions site-specific
Ask how delivery is organised, what information is required beforehand and how the consignment will need to be received. The relevant issue is not merely the delivery date; it is whether access, parking, unloading space and safe storage have been considered. Ask what arrives as separate packages and whether packaging needs protection from rain, wind or accidental damage until installation.
It is sensible to ask what you should inspect when goods arrive and how a discrepancy should be reported. Keep the order confirmation, packing information and photographs of any concern. Avoid booking onward trades on an assumed sequence unless it has been checked. Delivery arrangements can depend on site conditions and the particular order, so obtain current guidance rather than relying on a previous customer’s experience.
- Describe vehicle restrictions, narrow lanes, controlled parking and shared access before delivery arrangements are finalised.
- Ask who must be present, what unloading equipment is involved and where packaged components can be placed safely.
If components are travelling through a side passage to the regular full-size Lean-To greenhouse check every turn and overhead obstruction in advance.
Inspection 05 · INSPECTION 05
Clarify installation and responsibility boundaries
Ask whether installation is available for your location, what work it includes and what must be complete before the installers arrive. This should cover base readiness, safe access, clearance around the work area and any separate electrical or water work. Ask for the installation scope in writing, particularly if your project includes groundwork, landscaping or alterations to an existing wall.
If you plan to use your own installer, ask what documentation is supplied and whether there are recommended sequencing steps. Confirm who is responsible for checking the base, receiving materials and raising questions during assembly. A capable local contractor may still need model-specific instructions. Clear responsibility boundaries help avoid the common problem of one party assuming another party has checked a detail.
- Ask whether installation includes anchoring, glazing, doors, vents and accessories, or whether any elements are outside the scope.
- Agree who will move plants, furniture, paving materials and other obstacles away from the working area.
For a clear assembly brief, start with the drawings for the standard Classic greenhouse configuration you intend to order.
Inspection 06 · INSPECTION 06
Investigate planning, neighbours and insurance early
Ask the supplier what product dimensions and drawings they can provide for your planning research, but do not ask them to make a planning decision for your address. Rules and constraints can depend on the property, its setting, previous works and local designations. Check the relevant local authority guidance or seek appropriate professional advice before treating a proposed location as settled.
It is also worth discussing practical neighbour considerations before an order is placed. A greenhouse can affect shared access, views, reflections and the working space needed for installation. If the building will sit near a boundary or attached to your home, ask your insurer whether you should notify them and review your policy wording. The answer depends on the individual policy, not a general rule.
- Keep a scaled sketch showing boundaries, existing buildings and the intended greenhouse position for your own checks.
- Ask the supplier for accurate product drawings, then verify planning and insurance questions with the appropriate independent source.
When reviewing a structure alongside the house, use drawings for a full-size regular Lean-To greenhouse option rather than estimating its projection from photography.
Inspection 07 · INSPECTION 07
Understand care, parts and everyday operation
Ask what routine care the greenhouse needs across the year and which tasks are expected from the owner. Useful answers address cleaning, drainage, moving parts, seals and checks after difficult weather. A good care conversation should be specific enough to help you plan access: glass that looks easy to admire from the lawn may still require safe reach and sensible working space for cleaning.
Ask how replacement parts are identified and ordered if something is damaged, worn or misplaced over time. Find out which order details, photographs or measurements will help the support team locate the correct item. This is not pessimism; it is a practical question for a long-lived garden structure. Keep product documents and a record of the final configuration in an accessible place.
Ask whether care guidance identifies safe access requirements for cleaning roof glazing and maintaining moving parts. Planning these tasks before installation helps ensure paths, beds and furniture do not obstruct routine upkeep.
- Ask which components should be inspected seasonally and whether care guidance is supplied with the final product information.
- Confirm how to identify a replacement part without guessing between similar-looking fittings, panels or seals.
To assess long-term ownership, review care information for the standard Classic greenhouse collection alongside its final accessory choices.
Inspection 08 · INSPECTION 08
Read support and warranty terms before ordering
Ask what after-sales support looks like in practice: how to contact the team, what information they will need and how an issue is assessed. Different questions may call for different evidence, such as your order number, images, measurements or installation details. Ask whether there is written guidance for reporting a damaged component, a fitting query or an apparent fault, and retain every relevant document.
Finally, ask for the applicable written warranty conditions before placing the order. Read the scope, exclusions, owner responsibilities, installation requirements and claims process rather than relying on a short summary. A warranty is one part of a wider purchasing decision, alongside suitable siting, careful installation and realistic maintenance. If any wording is unclear, ask the supplier to explain it in relation to your proposed configuration.
Complete the order checklist with seven further questions: What are the internal growing dimensions and usable door clearances? Which optional items require separate selection or installation? Are any site measurements needed before finalising the configuration? What should I inspect on receipt of each package? Who should I contact if installation instructions appear unclear? What records should I retain for replacement-part enquiries? Which written warranty conditions apply to my selected model and options?
Questions 9–15: What are the internal growing dimensions and usable door clearances? Which optional items require separate selection or installation? Are site measurements needed before finalising the configuration? What should I inspect on receipt?
- Request current written terms and check that the named product and selected options match your intended order.
- Keep dated photographs of the finished installation, together with invoices, instructions and correspondence, for future reference.
Before committing to a house-side design, request written support details for the full-size regular Lean-To greenhouse range you are comparing.

Comparison
Supplier answers: what useful evidence looks like
Use this table to separate an informative answer from a reassuring but incomplete one. You are not looking for a supplier to solve every site issue remotely; you are looking for clear product information, sensible limits and a reliable route to the next decision.
| Question area | Useful supplier response | Your follow-up action |
|---|---|---|
| Exact specification | Names model, measurements, included components and selected options clearly. | Save the configuration summary with your comparison notes. |
| Base preparation | Provides current drawings, tolerances and fixing information where relevant. | Give drawings to your groundwork contractor before work starts. |
| Delivery access | Requests practical access details and explains receiving arrangements. | Measure gates, routes and available unloading space carefully. |
| Installation scope | States included work, exclusions and site prerequisites in writing. | Allocate separate tasks to the correct contractor or homeowner. |
| Future support | Explains contact route, evidence required and relevant written terms. | Store order documents, photographs and final product details. |
A five-step supplier conversation plan
Prepare a small evidence pack before you contact suppliers. It makes answers more specific and reduces the temptation to compare broad descriptions that refer to different configurations or site assumptions.
01
Measure the proposed space
Record width, depth, overhead clearances and distances to walls, boundaries, paths and services. Include usable working room, not just the footprint you hope to fill.
02
Photograph the journey in
Take photographs from the road or driveway through to the site. Include gates, corners, steps, slopes and any obstruction that affects delivery or moving components.
03
Define your growing priorities
List how you expect to use the greenhouse: propagation, tender plants, seating, storage or seasonal display. This informs questions about doors, access, ventilation and accessories.
04
Request a named configuration
Ask each supplier to identify the exact model and options discussed. Compare written specifications rather than assuming similarly styled greenhouses include the same elements.
05
Check the written record
Before ordering, review drawings, delivery information, installation scope, care guidance and warranty terms. Resolve differences between verbal advice and documents while changes remain straightforward.
The 15-question order checklist
Take this full list of 15 supplier questions into calls, showroom visits or email exchanges. Tick off each answer only when it relates to your actual model, selected options and proposed garden location; the final seven checks appear in the support section above.


Frequently asked questions
What is the first question to ask a greenhouse supplier?
Ask the supplier to identify the exact greenhouse configuration under discussion. Request the model, dimensions, glazing, frame finish and included options in a written summary. This prevents an early conversation based on a photograph or broad range description from becoming an order for something different from what you expected.
Should I ask about the base before ordering?
Yes. The base affects siting, groundwork, installation planning and the sequence of your project. Ask for current dimensions, level requirements and any fixing guidance relevant to the chosen model. Share that information with whoever is preparing the site, rather than asking them to work from estimated measurements.
What delivery questions matter most?
Focus on access and receiving arrangements. Explain narrow routes, gates, slopes, parking restrictions and the distance from unloading point to site. Ask what arrives in separate packages, what safe temporary storage is needed and what checks you should make on receipt. Obtain current order-specific guidance before arranging other work.
Can a supplier tell me whether I need planning permission?
A supplier can provide product drawings and dimensions, which are useful for your research, but should not make a definitive decision for a particular property. Check current guidance from the relevant local authority and seek professional advice where appropriate. Consider property-specific constraints, location and prior alterations rather than relying on general assumptions.
What should I ask about warranty and after-sales help?
Ask for the applicable written warranty terms and read the scope, exclusions, owner responsibilities and claims procedure before ordering. Also ask how support enquiries are made and what evidence is required. Keep your final specification, proof of purchase, instructions and installation records together so future questions can be handled accurately.
How can I compare two greenhouse quotations fairly?
Build a simple comparison sheet with one row for every material choice, accessory, delivery arrangement, installation task and support term. Check that the footprint and glazing are equivalent, then identify what is excluded. A lower-looking figure may describe a narrower scope, while a fuller configuration may require fewer separate decisions later.
Prepare your greenhouse brief
Order with a complete picture
The best questions to ask a greenhouse supplier are specific, site-aware and recorded in writing. They help you move beyond an attractive design towards an order that accounts for access, base preparation, installation, care and future support. That is the difference between merely choosing a greenhouse and preparing properly to own one.
Bring measurements, photographs and your intended use to the conversation, then ask for the documents that support each answer. Bloomcabin can help you explore configurations, but your final choice should be grounded in a realistic understanding of your garden and the written information for the product you select.
Gather your site notes and compare the configuration details that matter before you order.