Conservatory planning permission examples — what gets approved & refused
58,311 real decisions from 301 UK councils. See what actually gets approved, what gets refused, and why — so you don’t waste thousands on drawings for something your council will reject.
Last updated: June 2026
90.7%
approval rate across 58,311 decisions
That means roughly 1 in 11 conservatory applications are refused — often due to avoidable design issues.
58,311
Decisions
52,901
Approved
5,410
Refused
301
Councils
Conservatories and orangeries have high approval rates — they are a well-understood extension type with a long track record. Most issues arise around size and impact on neighbours.
What these results show
• Conservatories have one of the highest approval rates of any extension type.
• Most refusals relate to size (exceeding PD limits) or impact on neighbours in tight plots.
• Orangeries — with more solid walls and a lantern roof — are increasingly popular and treated the same way.
• If your conservatory is within PD limits, you likely don’t need to apply at all.
⚠️ These are national examples. Your council could be stricter — or more lenient. See what actually gets approved on your street →
Real conservatory decisions
Real examples showing what works — and what gets refused. Use the filters to compare approved and refused applications.
Approved
Alterations to existing detached two storey dwelling: replacement of pitched roof conservatory structure with flat roof and timber cladding; removal of dormer window to be replaced with velux rooflight; extension to single storey pitched roof garage to form 2no. car parking spaces; canopy over new e
▸ Replacing an existing structure is generally viewed more favourably than building new.
Approved
Demolition of existing conservatory and single storey kitchen at rear of property. Erection of single storey rear extension to include a flat roof design with feature roof lantern and separate flat roof light. Brickwork to match existing.
▸ Matching existing materials and design helps approval chances.
Approved
Single Storey rear extension with dual pitched roof and gable end. Existing Polycarbonate conservatory roof to be replaced with tiled roof. Bay window to living room to be enlarged.
▸ A roof that matches the existing house signals good design to planning officers.
Approved
Demolish existing conservatory. Build new single storey pitched roof rear extension. Convert existing garage into habitable living area.
▸ A roof that matches the existing house signals good design to planning officers.
DC/25/1876/AME
Approved
Non-material Amendment of DC/24/0377/FUL - Construction of single storey open porch, demolition of the first floor of the existing two storey front extension, construction of a first floor side extension, construction of pitched roof to existing altered ground floor extension, demolition of the exis
▸ A roof that matches the existing house signals good design to planning officers.
Approved
Reduce back branches by 1m over conservatory of 1 no. Oak situated on Parish Council land adjacent to 103 The Village - tree in a Conservation Area
▸ Sympathetic design in conservation areas can still get approved.
Approved
Demolition of existing conservatory and erection of single storey rear extension with a flat roof
▸ Single-storey extensions face less scrutiny than two-storey.
Refused
The proposal is to convert the existing dwelling into two semi-detached dwellings. The existing dwelling will have the existing conservatory demolished and replaced with a single storey extension.
Refused
Demolition of existing conservatory, partial demolition of existing utility at the rear & erection of a single storey flat roof extension
Approved
T1 - Yew - Crown lift by 0.5m and crown thin by 20%. T2 - Ash - Reduce branches overhanging road side by 1m. T3 - Beech - Reduce 4 branches overhanging conservatory/rear extension by 1.5 metres.
Approved
Reduction in height of one Cypress tree in the rear garden by approximately 2m-2.5m (to similar height of the conservatory roof)
Approved
Removal of existing flat roof rear extension and conservatory and erection of new flat roof rear extension.
Approved
Leylandii (pic: OMHNT1) - Crown lift up to 12-15ft highYew (pics: OMHNT2 and OMHNT3) - take back branches overhanging the garage taking back by 3-5 metres and the size of branches ranging from 3-5inchesYew (pics: OMHNT4 and OMHNT5) - trim up and shape the Yew tree that is overhanging conservatory ta
Approved
Non Material Amendment to Planning Permission 24/01721/PP - (Replacement of existing conservatory with sunroom) - Change from flat roof to Edwardian/lantern style glazed roof.
▸ Replacing an existing structure is generally viewed more favourably than building new.
Approved
T1 Oak - Reduce back lateral branches overhanging conservatory/patio by no more than 2m due to debris falling on conservatory and patio (Tree Preservation Order P1/201/435).
Approved
Erect 1.5 storey extension and glazed conservatory. Conversion of existing integral garage to bedroom and wet room.
Refused
Replacement of existing conservatory with new extension to extend beyond the rear wall 3.5m; maximum height measured externally from natural ground level 3.4m; height to eaves measured externally from natural ground level 2.5m.
Refused
Non Material Amendment to prior notification application 2020/0707/FUL - Erection of conservatory 3.5m wide and projection of 2.5m.
Approved
Demolition of existing conservatory, erection of single storey rear extension
▸ Single-storey extensions face less scrutiny than two-storey.
Approved
ALTERATIONS TO EXISTING CONSERVATORY TO FORM SUNROOM INCLUDING ERECTION OF EXTERNAL WALLS AND CHANGE OF ROOFING MATERIAL
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You’re looking at national data. 9% of conservatory applications get refused — but that number could be higher or lower in your area.
See what gets approved near your home →
Approved
Certificate of Lawfulness of Existing Development for replacement roof on conservatory
▸ Replacing an existing structure is generally viewed more favourably than building new.
Approved
Demolition of existing conservatory and erection of single storey rear extension (Certificate of Lawful Development)
▸ Single-storey extensions face less scrutiny than two-storey.
Approved
Alterations to existing hospital, including, replacement of existing conservatory roof, windows and glazed doors
▸ Replacing an existing structure is generally viewed more favourably than building new.
Approved
Application to vary condition 1 (approved plans) of planning permission Ref: DM2024/01674 for the ''Conversion of loft space of existing outbuilding, involving alterations to existing roofline, increase in ridge height, rooflights and solar panels to side roofslopes, green roof and alteration to exi
Approved
Erection of a single storey rear conservatory which, when combined with the existing rear extension, would extend 5.78 metres beyond the original rear wall, and for which the maximum height would be 3.7 metres and the height of the eaves...
▸ Single-storey extensions face less scrutiny than two-storey.
Approved
Replacement of existing conservatory with a 1-and-a-half storey side extension
▸ Replacing an existing structure is generally viewed more favourably than building new.
Approved
Demolition of existing conservatory and construction of a single-storey rear extension at 90 Lee Road, SE3.
Approved
Raise roof on outset, re-roofing of dwelling, installation of solar on roof, demolition of existing conservatory and internal and external alterations
Approved
Demolition of existing conservatory, construction of single storey rear extension to house (Class C3)
▸ Single-storey extensions face less scrutiny than two-storey.
Refused
To establish the lawfulness of the demolition and removal of existing rear conservatory and the proposed construction of a single-storey rear extension in the rear garden.
Refused
Demolition of conservatory and detached garage. Single storey rear extension. Fenestration alterations. Partial carport conversion.
Refused
Demolition of existing rear conservatory and single storey rear extension and erection of a single storey rear and side extension
Refused
Demolition of existing conservatory; construction of two storey side/rear extension
▸ Two-storey extensions face higher scrutiny due to greater neighbour impact.
Refused
Certificate of Proposed Lawful Development for the erection of a single storey rear extension following demolition of existing conservatory and lean-to
Refused
Certificate of Proposed Lawful Development for the erection of a single storey rear extension following demolition of existing conservatory and lean-to
Refused
Demolition of existing conservatory and building of double storey rear and side extensions.
Refused
Single storey rear extension with sky lights to replace existing conservatory (Lawful development certificate - proposed)
Refused
Certificate of (proposed) lawful development for demolition of existing rear conservatory, proposed single storey rear extension. Addition of side ground floor window. Addition on wall under existing bay on front elevation
Refused
Replace conservatory pitch roof with flat roof including lantern
Approved
LISTED BUILDING CONSENT: Works to improve and extend the path network through the Shrubbery and around the Orangery
▸ Listed building applications succeed when design is sensitive to the original character.
Approved
Details pursuant to Condition 3 (Materials) attached to planning permission P/1937/23 dated 30/10/2023 for Single storey rear extension; external alterations (demolition of conservatory)
▸ Single-storey extensions face less scrutiny than two-storey.
Approved
Lawful Development Certificate for proposed demolition of existing conservatory and erection of single story side extension
Approved
Proposed replacement of conservatory with a brick extension to the rear extending 4.3 metres beyond the rear wall of the original dwelling house; maximum height of 3.7 metres; height of the eaves 2.2 metres (Class C3).
▸ Replacing an existing structure is generally viewed more favourably than building new.
Approved
Lawful Development Certificate: Remove conservatory and replace with single storey extension
▸ Single-storey extensions face less scrutiny than two-storey.
23/00259/FUL
Approved
Full Planning application for the internal fitout over 2no floors, glazed shopfront and tiled entrance portal and an enclosed conservatory with sliding glazed windows and roof.
Approved
T1- Poplar Tree -Fell due to being 5.6 meteres high with visible roots across the lawn and extending towards (no:50) to house | conservatory of house at back of boundary fence (no:34). Diameter of T1 trunk 87 cm. T2- Canadian Maple - to prune shape and manage height of tree-3.5 metere tall, no visib
Approved
Alterations to Dwellinghouse - Replacement Conservatory Roof
▸ Replacing an existing structure is generally viewed more favourably than building new.
160717
Approved
Removal of Existing Conservatory and replace with new Proposed Extension
Refused
Demolition of existing conservatory and alterations to existing dwelling at 14 Edenvale Crescent and the erection of two apartments, new access and all associated works adjacent to No. 14 Edenvale Crescent.
Refused
Proposed removal of existing conservatory & construction of new single storey extension at
Refused
Application for a Non Material Amendment to planning permission 25/00896/HOU (Demolition of rear conservatory and dormer roof extension and erection of single storey rear extension and hip to gable and rear dormer roof extension with 2nos. front rooflights to extend loft conversion. Changes to fenes
Refused
Erection of a two storey rear extension following removal of existing conservatory.
▸ Two-storey extensions face higher scrutiny due to greater neighbour impact.
25/0110/HHOPDC
Approved
Erection of a single storey rear extension and a single storey rear infill conservatory, and insertion of one window to rear eastern elevation.
▸ Single-storey extensions face less scrutiny than two-storey.
23/128/CLEUD
Approved
Regularise the erection of 3 self-catering pods, a conservatory and the use of land as a campsite
Approved
Redevelopment of residential unit including lift, conservatory and remodelling
Approved
Discharge of condition 3 (Boundary treatment) of planning permission 14/P/00067 for a rear conservatory
Approved
Certificate of Lawfulness - Proposed for conservatory extension to rear of dwellinghouse
09/01445/DC
Approved
Conversion of garage to habitable room and erection of conservatory to rear of dwellinghouse.## PERMITTED DEVELOPMENT ##
Approved
Proposed construction of single storey rear conservatory extension
▸ Single-storey extensions face less scrutiny than two-storey.
Approved
We are applying to do the belowRemoval of dying Cherry Tree as per assessment by Matt Bayles tree ServicesRemoval of 1 x live branch which is encroaching the neighbours conservatory and 2 x dead branches to the right as per the images providedMatt Bayles Tree Services will be engaged to do the tree
Before you spend £2,000+ on drawings — and risk getting refused
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