Orangery and conservatory drawings for Clarendon Park homes — checked against the Class A rear limits and the 30m² building-regulations exemption, drawn to Leicester City Council's guidance and revised free until your decision.
Leicester City Council granted 87% of the householder planning decisions it made in its latest published year — level with the 87% England-wide householder average. The HMO Article 4 Direction means any new small HMO needs consent, and the council usually refuses further conversions where student occupation is already concentrated, which is where a policy-literate drawing pack earns its keep. Its dominant Victorian (1837–1901) and Edwardian (1901–1910) housing stock sets the design brief on most streets.
Before permission is required, Class B allows 40m³ of added loft volume on a terrace and 50m³ on a semi or detached house, and Class A allows a 3m single-storey rear extension on a terrace or 4m on a detached house. Clarendon Park carries at least one Article 4 direction, and conservation areas including Stoneygate, New Walk and Knighton remove those rights outright, so we confirm your exact address before a line is drawn. A validated householder application in Clarendon Park is determined against an 8-week statutory target.
Queens Road (the shopping spine framed by tightly packed Edwardian terraces), Montague Road (grid of red-brick terraces with front bays and small forecourts), Springfield Road (wider terraces edging into the Stoneygate conservation area), Howard Road (student-dominated terraced streets close to the University of Leicester), Avenue Road Extension (later terraces linking Clarendon Park to Knighton) and Clarendon Park Road (the district's namesake terraced street of period frontages) — these are the Clarendon Park pockets our drawings cover most. Heritage designations here include Stoneygate, New Walk and Knighton. Leicester City Council weighs each proposal against the Leicester Local Plan and the council's Student Housing SPD, where the Stoneygate conservation area boundary reaches into Clarendon Park, so frontage, boundary-wall and roof detail are held to conservation standards on those streets. Many Clarendon Park terraces are subdivided into student flats or run as HMOs, and converted flats hold no householder permitted-development rights.. On roofs the borough is gabled and hipped slate roofs on the terraces and rear back-addition roofs shaping side-return schemes, over late-Victorian and Edwardian red-brick terraces, larger bay-fronted villas towards the Stoneygate edge and period houses widely converted to student flats and HMOs.
The difference is not marketing. A conservatory is predominantly glazed — at least three quarters of the roof and half of the walls — which is what earns it the building-regulations exemption. An orangery has a solid masonry perimeter with a glazed lantern set into a flat roof, so it usually reads as a conventional extension for building control and has to meet Part L thermal standards, Part A structure and Part B fire like any other room.
Both are judged the same way for planning: as rear extensions, against the Class A depth, height and eaves limits, and against the Leicester Local Plan and the council's Student Housing SPD. Clarendon Park is largely late-Victorian and Edwardian red-brick terraces, larger bay-fronted villas towards the Stoneygate edge and period houses widely converted to student flats and HMOs, and the design question is usually whether the glazing reads as a lightweight addition to that stock or as a bolted-on conservatory kit. On period houses, an orangery with a properly proportioned lantern almost always sits better than a full-height glazed box.
In conservation areas such as Stoneygate and New Walk, rear glazing is assessed on visibility from the street and on the effect on the rear elevation's character. Clarendon Park sits at the heart of Leicester's HMO Article 4 area, first introduced in 2013 and extended in 2022, so converting a family house to a small house in multiple occupation needs planning permission and is routinely refused near the universities.
Many conservatories are permitted development. You will need an application to Leicester City Council where any of these apply:
We check the scheme against the Class A planning limits and against the building-regulations exemption at the same time, so you know before committing whether you are building an exempt conservatory or a fully regulated room.
Below is Leicester City Council's real householder decision record, drawn from official planning statistics and refreshed as new data lands. Leicester grants the large majority of householder applications, but in Clarendon Park the defining tension is intense student-HMO demand meeting the Article 4 controls that restrict further conversions. Glazed rear additions are judged on depth, eaves height and how the glazing meets the existing elevation.
Source: MHCLG planning application statistics (householder decisions, England, 1 April 2025 - 31 March 2026). Compare every borough on our London approval-rate league table.
Tell us about your project and get a fixed, no-obligation quote back within one working day. If you don't need planning permission at all, we'll tell you that too — for free.
Across Queens Road, Montague Road and Springfield Road, the schemes that succeed keep the eaves below the neighbour's ground-floor cill line, set the glazing back from the boundary, and use a solid parapet or brick perimeter to tie the addition into the house. On late-victorian and edwardian red-brick terraces, a lantern set in a flat roof usually reads better than a pitched glazed roof, and it avoids the summer overheating that makes full conservatories unusable for months a year.
The HMO Article 4 Direction means any new small HMO needs consent, and the council usually refuses further conversions where student occupation is already concentrated. The decision worth making early is whether to keep the separating doors. Keeping them preserves the building-regulations exemption but leaves you with a room that is not part of the house; removing them creates one continuous space but brings the whole addition inside Part L, which changes the glazing specification and usually the heating design too. We set out both versions before you commit.
We draw glazed rear additions across Clarendon Park. A few of the areas where they come up most often:
Orangery and conservatory drawings for Queens Road — the shopping spine framed by tightly packed Edwardian terraces — checked against the Class A limits and drawn to Leicester City Council's guidance.
Orangery and conservatory drawings for Montague Road — grid of red-brick terraces with front bays and small forecourts — checked against the Class A limits and drawn to Leicester City Council's guidance.
Orangery and conservatory drawings for Springfield Road — wider terraces edging into the Stoneygate conservation area — checked against the Class A limits and drawn to Leicester City Council's guidance.
Orangery and conservatory drawings for Howard Road — student-dominated terraced streets close to the University of Leicester — checked against the Class A limits and drawn to Leicester City Council's guidance.
Orangery and conservatory drawings for Avenue Road Extension — later terraces linking Clarendon Park to Knighton — checked against the Class A limits and drawn to Leicester City Council's guidance.
Orangery and conservatory drawings for Clarendon Park Road — the district's namesake terraced street of period frontages — checked against the Class A limits and drawn to Leicester City Council's guidance.
The planning test is the same for both. The building-regulations test is not.
| Structure | Planning route | Building regulations | Practical effect |
|---|---|---|---|
| Conservatory under 30m², doors retained | Class A rear extension limits | Largely exempt | Cheaper build, unheated in winter |
| Conservatory, doors removed | Class A rear extension limits | Part L applies in full | Continuous space, higher spec glazing |
| Orangery with solid perimeter and lantern | Class A rear extension limits | Fully regulated | Usable year round, better on period houses |
| Any of the above beyond the depth limits | Full householder application | As above | 8-week determination |
| Any of the above on designated land | Full householder application | As above | Design and visibility assessed |
Planning limits from the GPDO 2015, Schedule 2, Part 1, Class A; exemption criteria from the Building Regulations 2010, Schedule 2, Class 7.
A fixed process covering both consents, because they pull in different directions.
Send us your Clarendon Park postcode and house type. We confirm the Class A limits that apply, check designation status, and score your odds against live Leicester City Council decisions.
We measure the rear elevation, eaves and ground levels, and the neighbouring boundary — the numbers that decide both the projection limit and the 2-metre eaves rule.
Chartered designers develop the orangery or conservatory to your brief, and we set out clearly whether it stays inside the building-regulations exemption or becomes a fully regulated room.
We submit the certificate or application, manage validation and officer queries, and revise free until Leicester City Council decides.
Often not. A conservatory is treated as a rear extension, so it can be permitted development within the Class A limits — 3 metres of projection on a terrace or semi, 4 metres on a detached house, with eaves under 3 metres where it sits within 2 metres of a boundary. In Clarendon Park you will need an application to Leicester City Council beyond those limits, and on designated land such as Stoneygate and New Walk.
A conservatory is largely exempt if it is under 30 square metres, at ground level, separated from the house by external-quality doors, and has at least 75% of its roof and 50% of its walls glazed. Glazing, electrics and any drainage work still have to comply. Remove the separating doors and the exemption falls away — the space becomes part of the house and Part L thermal standards apply. This applies to your Clarendon Park address specifically. Leicester City Council is the decision-maker.
For planning, none — both are rear extensions assessed against the same Class A limits by Leicester City Council. The difference is in building control: an orangery's solid perimeter and flat roof with a lantern usually means it fails the glazing test for exemption, so it is fully regulated. That is why an orangery costs more to build but is comfortable in January. This applies to your Clarendon Park address specifically.
Usually yes at the rear, though permitted-development rights are narrower on designated land and an Article 4 direction can remove them entirely. The assessment turns on whether the addition is visible from the street and how it meets the original rear elevation. A restrained orangery in matching brick with a lantern is consistently easier to get through than a proprietary glazed conservatory. This applies to your Clarendon Park address specifically. Leicester City Council is the decision-maker.
A fully glazed roof will, unless it is specified for it. That is the practical reason most of our clients end up building an orangery instead: a solid insulated roof perimeter with a lantern gives daylight without the greenhouse effect, and keeps the space usable across the year. We raise it at design stage because it is much cheaper to solve on paper than after the build. This applies to your Clarendon Park address specifically. Leicester City Council is the decision-maker.
If you excavate foundations within 3 metres of a neighbouring structure and deeper than its foundations, or build on the boundary itself, the Party Wall etc. Act 1996 applies and notice must be served. That is separate from Leicester City Council's planning decision. We flag it at design stage so the notice period does not delay the start on site. This applies to your Clarendon Park address specifically.
We quote each Clarendon Park orangery or conservatory individually, because the structure and the roof form change the work considerably, and send a fixed, no-obligation quote within one working day. It covers the full drawing pack with free revisions until Leicester City Council approves. Call 020 7864 7245 to start.
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