The short answer
Once groundworks start, a typical uPVC or aluminium conservatory takes 2–5 working days to erect; total project time from order to completion is usually 6–12 weeks. The manufacturing lead time for bespoke frames accounts for most of the wait. Orangeries and structures requiring building regulations approval take longer. See conservatory base and foundations for the groundworks detail.
The question “how long does a conservatory take to build?” has two different answers depending on what you include. The on-site construction — laying the base, erecting the frame and fitting the glazing — is remarkably quick for most standard conservatories: typically 2–5 working days once everything is on site and the base has cured. But the total elapsed time from signing the contract to sitting in the finished conservatory includes a manufacturing and scheduling lead time that typically runs 6–10 weeks, plus the base cure time, any planning process and any delays from weather, access or material supply.
Build time at a glance
- Manufacturing lead time 6–10 weeks from order to delivery (typical)
- Base laying 1–3 days depending on complexity
- Concrete cure time Typically 7–14 days before frame goes up
- Frame and glazing erection 2–5 days (typical standard conservatory)
- Orangery build time 8–14 weeks total including masonry
- Total typical project 8–14 weeks from contract to completion
The manufacturing lead time
Most conservatory frames are manufactured to order by specialist factories, not held in stock. Once you sign a contract and pay a deposit, the dimensions and specification are sent to the factory for production. Standard uPVC frames from large national manufacturers typically have lead times of 4–8 weeks; bespoke or non-standard colours, large frames or aluminium systems may take 8–12 weeks. The installer then schedules the installation once the components have arrived and their groundwork team is available. This combined lead and scheduling time is why most conservatory companies quote 8–12 weeks from order to start of installation.
The groundworks and base
Before any frame goes up, the base must be prepared. For a simple concrete raft on flat ground, this typically takes 1–2 days to lay, followed by a curing period of 7–14 days before the frame crew arrives. A more complex base — a step-down to a lower garden level, a suspended floor on poor ground, or extensive drainage work — takes longer. See conservatory base and foundations for what is involved. Some companies programme the groundworks shortly before the frame arrives to minimise the gap; others let the base cure fully before scheduling the frame. Ask your installer how they programme the two stages.
| Stage | Typical duration | Notes |
|---|---|---|
| Survey and contract | 1–2 weeks | Includes detailed site measure |
| Manufacturing lead time | 6–10 weeks | Longer for bespoke / aluminium |
| Groundworks & base | 1–3 days | Plus 7–14 days cure |
| Frame & glazing erection | 2–5 days | Standard uPVC conservatory |
| Finishing (sealant, cleaning) | Half–1 day | Usually same day as completion |
| Orangery (masonry) | 4–8 weeks on site | Much longer due to brickwork |
What causes delays
Common causes of delay beyond the planned programme include:
- Weather: ground freezing or sustained rain can prevent groundwork crews from working and delay concrete laying.
- Factory delays: manufacturing backlogs, material supply issues or errors in the order can add weeks to the lead time. Ask for a confirmed delivery date in your contract.
- Access issues: sites with no rear access require materials to be carried through the house, which slows the installation and can affect the crew’s scheduling.
- Planning or prior approval: if the conservatory requires a Householder Consultation Scheme prior approval (for oversized structures), the 8-week consultation period adds to the total timeline.
- Additional work: if the installer discovers drainage, structural or access issues during groundworks, this can add time and cost.
How to shorten the project time
There is limited scope to significantly shorten the manufacturing lead time, but a few practical steps help. Order early relative to the season you want to use the conservatory in — spring and summer are peak installation seasons, so ordering in autumn or winter typically gives shorter lead times. Confirm that the installer has all site measurements at the survey stage so there are no measurement queries that delay the factory order. Ensure good access to the rear of the property is available from day one. If you are taking time off work for the installation, confirm the schedule firmly in writing before booking leave — last-minute rescheduling by installers is a common frustration. This page provides general guidance only; timescales are typical illustrations based on trade guidance and will vary by installer, project and region.
Ready to plan your conservatory project?
Getting quotes from installers now — and confirming manufacturing lead times — lets you plan your project to be ready when you want it.
Frequently asked questions
How long does a conservatory take to build once work starts?
Once the base is laid and cured, erecting a standard uPVC or aluminium conservatory frame typically takes 2–5 working days. The total project time from order to completion is usually 8–14 weeks including manufacturing lead time.
How long does it take for a conservatory base to set?
A concrete raft base typically takes 7–14 days to cure before the conservatory frame is installed on top. The installer programmes this into the schedule.
How long does an orangery take to build?
Much longer than a conservatory, because of the masonry work. Most orangeries take 8–14 weeks on site from groundworks to completion, plus a manufacturing or materials lead time.
Can a conservatory be built in a week?
The frame erection of a small, simple conservatory can be completed in 2–3 days once the base is ready. But the base must cure first, and the total project from order to completion is typically 8–14 weeks.
Sources & further reading
- Glass & Glazing Federation — conservatory installation timescales and programming guidance
- FENSA — installer quality standards and customer protection scheme
- Planning Portal — Householder Consultation Scheme timescales for larger extensions
- LABC — Local Authority Building Control guidance on building control inspection scheduling
This is general information about conservatories and orangeries in the UK, not planning, structural, legal or financial advice. Costs are typical illustrations only and are not quotes for any specific project; actual prices vary with size, site conditions and your chosen installer.