Conservatory planning permission examples — what gets approved & refused
64,947 real decisions from 306 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: August 2026
89.7%
approval rate across 64,947 decisions
That means roughly 1 in 10 conservatory applications are refused — often due to avoidable design issues.
64,947
Decisions
58,286
Approved
6,661
Refused
306
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
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.
Approved
Demolition of the existing conservatory and the erection of single storey, flat roof extension to the rear.
▸ Single-storey extensions face less scrutiny than two-storey.
Approved
Application to Determine if Prior Approval is Required for a Proposed Larger Home Extension - Rear single storey extension. Existing Conservatory demolished. Measuring 4.05m in depth, 3m high and 3m at the eaves, assessed under the Town and Country Planning (General Permitted Development) (England)
▸ Modest single-storey extensions within typical depth limits have strong approval rates.
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
Single storey flat roof extension to rear to replace existing glazed conservatory
▸ Replacing an existing structure is generally viewed more favourably than building new.
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
The addition of a double-storey extension to the rear with rooflight; replacement of existing conservatory and part of outbuilding with a single-storey side extension with veranda; addition of a lantern to the main flat roof; enlargement of patio and associated re- landscaping.
Approved
Non material amendment to planning permission 25/00052/FUL for the demolition of existing conservatory, shed and porch, erection of two storey side extension, single storey rear extension, front porch and part garage conversion. [For clarification this is an amendment to the designs of the parapet d
▸ Single-storey extensions face less scrutiny than two-storey.
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
Demolition of existing conservatory, erection of new single storey rear extension and single garage conversion. Extension and conversion spaces to comprise of a lounge and snug accommodation respectively.
▸ Single-storey extensions face less scrutiny than two-storey.
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
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
Additon of a first floor conservatory on top of new steel / timber floor & existing piers and infill uPVC frames between piers at ground floor level.
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
Lawful Development Certificate To Demolish Existing Conservatory And Garage, Erect New Single Storey Side And Rear Extensions
▸ Single-storey extensions face less scrutiny than two-storey.
Approved
Certificate of Lawfulness of Existing Development for replacement roof on conservatory
▸ Replacing an existing structure is generally viewed more favourably than building new.
Still scrolling?
You’re looking at national data. 10% of conservatory applications get refused — but that number could be higher or lower in your area.
See what gets approved near your home →
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
Proposed single storey orangery rear extension with lantern extending 4.30m from the rear wall of the original dwelling house, with a maximum height of 3.10m and an eaves height of 2.75m
▸ Single-storey extensions face less scrutiny than two-storey.
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
ALTERATIONS TO EXISTING CONSERVATORY TO FORM SUNROOM INCLUDING ERECTION OF EXTERNAL WALLS AND CHANGE OF ROOFING MATERIAL
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
Existing conservatory roof, doors and windows to be removed and new tiled roof extension to be erected on existing base and walls
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
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.
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
Approved
Erection of single storey extension to rear following removal of existing conservatory
▸ Single-storey extensions face less scrutiny than two-storey.
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.
Refused
Installation of one storey conservatory to the side of property
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
Application for a certificate of lawfulness for side porch and rear conservatory
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
09/01445/DC
Approved
Conversion of garage to habitable room and erection of conservatory to rear of dwellinghouse.## PERMITTED DEVELOPMENT ##
Approved
Erection of dwellinghouse (amended design incorporating omission of dormer windows and conservatory and additional rooflight)
▸ Rear dormers are far more likely to be approved than front-facing ones.
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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