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Planning Made-to-Measure Garden Structures: Sizes, Colours and Configurations
Planning a made-to-measure garden structure starts with its use, site and circulation space, not a model number. This guide covers coordinating size, form, colour, doors, ventilation, foundations, delivery and installation.
A made-to-measure garden structure should not be chosen simply because one version looks attractive in a photograph. What matters is whether a greenhouse, orangery, pergola or outdoor sauna will work technically at its intended site. Use, external dimensions, circulation areas, property access, foundations and equipment must all be considered together.
“Made to measure” does not automatically mean that every possible dimension or component layout can be manufactured. Configurations often use a structural system with defined profiles, bays, roof forms and connection points. Good planning combines individual requirements with the technically available options.
Start with the intended use
First define what will actually happen in the structure. A propagation greenhouse needs different walkways and ventilation options from an orangery with seating. A pergola above a dining area is sized differently from a narrow canopy along a house wall. For a sauna, access, changing space, privacy and the necessary technical connections must also be considered.
For greenhouses, also decide whether work will mainly be done in the ground, in raised beds or on growing benches. Anyone planning to grow leafy vegetables can find typical use scenarios in the guide to growing lettuce in a greenhouse Temperature control and air exchange are explained in the article on greenhouse temperature and humidity .
Write down the main purpose and two possible secondary uses. A greenhouse may later become a sheltered seating area; a pergola may accommodate an outdoor kitchen as well as a dining table. Such additions affect the required area and should be considered before ordering.
Determining the right size
External area alone says little about practical usability. Posts, profiles, doors, roof slopes, planting areas and furniture determine how much space remains genuinely usable. Size planning should therefore follow four steps.
1. Measure the site, not just the lawn
Record length and width at several points. Property boundaries, walls and older buildings are not always exactly parallel. Note slopes, steps, drainage channels, inspection chambers, downpipes, roof overhangs, roots and underground services. Also check that doors and windows on neighbouring buildings can open fully.
Light exposure is also part of the survey. Observe the site at different times of day where possible. For a planned orangery, the guide to orangery sizes and design offers further orientation.
2. Create a plan of the usable internal area
Draw the footprint to scale and add every fixed and movable element. In a greenhouse, beds, tables, shelves and water containers belong on the plan. For a pergola, include the table, chairs, braai or outdoor kitchen. Allow not only for furniture dimensions, but also pulled-out chairs, open doors and working positions.
A main route should remain usable without constant rearranging. Dead ends and tight corners make maintenance, cleaning and moving larger plants more difficult. Plan around movement through the space, rather than filling every available area.
3. Allow for later use
Many garden structures remain in use longer than the original garden plan. Consider whether additional growing benches, larger containers, broader seating or technical equipment are likely. A modest area reserve is often more useful than a configuration that is fully occupied from day one.
With saunas, look beyond the sauna room itself. The route from the house, a sheltered storage area and safe use in darkness or wet conditions belong to the overall concept. The Elma S outdoor sauna and Elma L outdoor sauna can provide a size comparison. The stated model information remains decisive.
4. Confirm model-specific dimensions
Do not transfer desired dimensions to a particular model without checking. Roof pitch, module spacing, profiles, doors and add-on parts can limit available sizes. Have external dimensions, relevant internal dimensions, door openings and roof overhangs confirmed for the exact configuration.
For pergolas, the pergola size guide can assist with preselection. For greenhouse structures, the greenhouses and conservatories overview offers a starting point. Rely only on the final documented specification when ordering.
Freestanding, lean-to, T-shaped or pergola?
| Structure type | Typical advantage | Points to check carefully |
|---|---|---|
| Freestanding | Flexible positioning and access on all sides | Foundation, wind exposure, access routes and surrounding clearances |
| Lean-to | Uses a house wall and keeps routes to the building short | Wall construction, connection height, roof drainage and windows |
| T-shaped | Functional zones and a distinctive focal point | More complex footprint, roof junctions and internal circulation |
| Pergola | Open transition between house, terrace and garden | Sun exposure, rainwater routing, side closures and anchoring |
A lean-to solution is not automatically best for a small property. An unsuitable wall, low roof overhang or essential passageway can remove its advantage. The comparison of wall-mounted and freestanding pergolas shows the key planning differences.
For pergolas, distinguish between roof concepts as well. The overview of bioclimatic and classic pergolas and the guide to when a bioclimatic pergola or glass roof is suitable can support a functional preselection.
Configuration options to discuss
Prepare a list that separates essential, desirable and optional features. This keeps planning technically clear and quotations comparable.
- Doors: number, opening direction, position and clear opening area.
- Ventilation: roof or side ventilation and how it can be operated.
- Glazing or panels: intended use, light effect, privacy and maintenance.
- Internal layout: paths, beds, shelves, seating areas and possible divisions.
- Drainage: position of gutters and downpipes, and discharge across the property.
- Shading and sun protection: orientation, operation and maintenance access.
- Pergola sides: open sides, privacy screening or weather-dependent closures.
- Sauna planning: door orientation, outdoor space, privacy and model-dependent equipment.
The choice of surface elements must suit the intended use. Information on polycarbonate, multiwall sheets and insulation helps place the terminology. Available materials and combinations must still be confirmed for the specific model.
Choosing colour and surface effect
Colour influences whether the structure appears as an independent garden feature or visually relates to the house. Compare colour samples at the intended site where possible. Facade colour, window frames, roof finish, paving and planting all alter perception.
Dark shades can make profiles more prominent, while lighter colours respond differently to reflective surfaces and surroundings. These are visual observations, not technical claims. The available finish and colour range is what matters. Lighting, camera settings and screens mean photographs and digital images cannot guarantee an exact colour match.
Those interested in traditional forms can find design ideas in the article about Victorian greenhouses . An inspirational image should never replace the written colour specification and configuration.
Comparing an aluminium structure with a wooden garden shed
The comparison should begin with purpose. An aluminium greenhouse is designed for light entry and plant cultivation. An enclosed garden shed may instead suit storage, a workshop or a more enclosed leisure space.
Wood and aluminium differ in appearance, construction and care. Wood is a natural material whose surface needs regular inspection and, depending on the version, treatment. Aluminium profiles need no wood preservative treatment, but connections, seals, drainage routes and surfaces must still be kept clean. The better system depends on use, desired transparency, location and willingness to maintain it.
Include these details in a quotation request
- preferred structure type and main use;
- site sketch with measured lengths, heights and obstacles;
- photographs from several directions;
- details of slope, ground conditions and existing foundations;
- preferred door, ventilation and drainage positions;
- colour and material preferences;
- delivery address and notes about narrow access roads or steps;
- planned installation route and available working area;
- unresolved questions about local requirements.
The general process is explained under How to order . For questions about an individual configuration, use the Contact page. A structured enquiry reduces follow-up questions but does not replace technical assessment.
Checking the final configuration
Do not assess a quotation only by its total price or model name. Compare every item with your requirements list. Dimensions should clearly state whether they are external, internal, base or opening dimensions. Check the number and position of doors, windows, ventilation elements, drainage and accessories.
Also read the information about purchasing and delivery and the applicable warranty information. If two quotations appear similar, compare them item by item in a table. Small differences in structure or equipment can matter greatly in everyday use.
Planning the site, delivery and installation
Before foundation or installation work, establish whether municipal approval, building lines or other requirements apply. Requirements vary by municipality, property and structure type. For Cape Town projects, use the official building-plan route and consult the District Planning Office; elsewhere, check with the relevant municipality. Do I need approval for a greenhouse or pergola? provides an initial overview; the responsible local authority must confirm the requirements for your site.
Delivery access checklist
- Can the access route accommodate the intended delivery method?
- Do gates, bends, branches, overhead lines or parked vehicles create obstacles?
- Can the goods be moved safely from the unloading point to the installation site?
- Is there a level, dry and protected temporary storage area?
- Can long or delicate components be handled along the entire route?
- Have steps, narrow paths and soft ground been reported in advance?
Assess these points for the specific delivery, not against a previous garden-furniture delivery. Component sizes and packaging can differ substantially.
Typical installation sequence
- Approve the plan: confirm the complete specification, dimensions and accessories.
- Prepare the site: remove obstacles and set levels and square reference lines.
- Build the foundation: work only to the requirements of the confirmed structure. For pergolas, the pergola foundation guide is useful preparation.
- Check the delivery: document packaging, allocation and visible discrepancies.
- Install the supporting structure: follow the sequence and alignment in the relevant documentation.
- Fit surface elements and accessories: coordinate doors, glazing, ventilation and drainage.
- Carry out the final check: check opening functions, fixings, water routes and cleanliness.
Foundation and structure must be planned as one system. A foundation built too early can cause problems if confirmed external dimensions, post positions or heights differ from the original assumption.
Care after installation
Inspect the structure regularly and additionally after unusual weather events. Keep gutters, outlets and ventilation openings clear. Remove dirt using suitable material-compatible products, and check that moving parts operate without obstruction.
The guide to caring for an aluminium greenhouse contains further advice. The care and maintenance instructions for the exact version remain decisive. General product information and further planning topics are collected under Useful information .
Frequently asked questions
Does “made to measure” mean that any size is possible?
No. Structural modules, profile spacing, roof geometry, doors and structural requirements set limits. “Made to measure” describes a configurable option within technically available possibilities. Achievable dimensions must be confirmed for the model.
Should I choose the model first or measure the site?
Document the site and intended use first. A suitable model family can then be selected. Finally, check again that the exact model dimensions, doors and roof overhangs fit the measured space.
How much additional space should remain around the structure?
There is no universal figure. Space is needed for installation, cleaning, drainage, door movement and access to adjacent elements. Local setback or building-line requirements may also apply. Set edge clearances for the specific site and model.
Can the greenhouse colour be matched to the house?
A coordinated appearance is often possible if the desired shade is available for the model. Compare a physical sample with the facade and window frames. Photographs and screen colours cannot guarantee an exact match.
Can doors and ventilation openings be positioned differently?
That depends on the structural grid and selected version. Mark preferred positions on a sketch and have feasibility confirmed. Consider opening space, circulation, wind direction and access for operation.
Is a lean-to structure always better for a small garden?
No. Wall condition, windows, roof overhang, drainage and access can make it unsuitable. A compact freestanding solution may work better when it is easier to reach and maintain from every side.
Which is better for guests: an orangery or a pergola?
An orangery offers a more enclosed, light-filled room. A pergola creates an open transition to the garden. The right choice depends on the desired level of weather protection, ventilation, openness and seasonal use.
Can an inspiring project photograph serve as a specification?
No. A photograph cannot confirm dimensions or show every component, colour or structural detail. Use images to coordinate the design, but order only from a configuration confirmed in writing.
When should the foundation be commissioned?
Only once the specification, dimensions, heights and fixing points have been confirmed. The site can be investigated and prepared beforehand, but the final foundation should follow the approved plan.
What should I do if two quotations look almost identical?
Compare external dimensions, internal space, doors, ventilation, material selection, accessories, foundation requirements, delivery scope and installation responsibilities item by item. Existing greenhouse reviews can offer additional decision support but do not replace technical assessment.
Can the configuration be changed after ordering?
Whether changes are possible depends on the order and its processing stage. They may affect technical details, timing or cost. Submit any request immediately, and treat the change as accepted only after written confirmation.
Final decision checklist
- The main use and possible future use are defined.
- The site has been measured and photographed at several points.
- Internal routes, doors, furniture, beds and working areas are drawn in.
- Structure type, size, colour and equipment are confirmed for the model.
- Drainage, foundation and delivery access are planned.
- Locally applicable requirements have been checked with the responsible authority.
- The quotation and drawings have been checked item by item.
- Installation sequence, responsibilities and maintenance access are clear.
A sound decision comes from documented requirements, not isolated features. Compare the complete configuration and check that site, structure and planned everyday use fit together. Other product areas such as garden saunas and models such as the HC150 barrel sauna can be assessed in the same way: first the use and site, then the model and equipment.
