Conservatory planning permission examples — what gets approved & refused
51,821 real decisions from 247 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: March 2026
89.7%
approval rate across 51,821 decisions
That means roughly 1 in 10 conservatory applications are refused — often due to avoidable design issues.
51,821
Decisions
46,461
Approved
5,360
Refused
247
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
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
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.
Refused
The removal of conservatory at rear and hipped roof off existing rear addition. The addition of a side return and replacement of extension where conservatory was previously installed forming a L-shape flat roof extension of a height of 2.87m.
Approved
Demolition of rear conservatory and erection of single-storey rear extension, alterations to roof to form additional living accommodation, alterations to front, side and rear fenestration and re-rendering of dwellinghouse
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.
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
Replace the roof of the existing conservatory with a new solid flat roof with roof lantern, adjust the glazing configuration to allow for bi-fold doors
▸ Flat roofs with lanterns are a well-established pattern that councils are comfortable with.
Approved
Full: Erection of a single storey side extension, removal and replacement of windows and roof to the single storey rear conservatory and the formation of 7 no. ancillary letting bedrooms within the existing first floor.
▸ Replacing an existing structure is generally viewed more favourably than building new.
Refused
Demolition of existing conservatory, partial demolition of existing utility at the rear & erection of a single storey flat roof extension
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
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
Prior Approval Notification for the proposed single storey rear extension extending 6 metres beyond the rear wall of the original house, with a maximum height of 3 metres and an eaves height of 3 metres. (As shown on plans P01 & P02) Following removal of existing conservatory and garage.
▸ Prior approval applications that meet the criteria are rarely refused.
Approved
Removal of existing flat roof rear extension and conservatory and erection of new flat roof rear extension.
Approved
Works comprising: Conservatory Exterior; replacement of glazing, new louvres, works to frame; enclosure of walkways; new workshop, new planter beds; vents to art gallery roof and shaft face, works to louvres, new lighting; replacement glazing to corridor; replacement of sculpture court rooflight, re
▸ Replacing an existing structure is generally viewed more favourably than building new.
Approved
Rear Single Storey Flat Roof Extension to Replace Conservatory
▸ Single-storey extensions face less scrutiny than two-storey.
16/03280/FUL
Approved
New timber deck, enlargement of window openings to rear, new roof coverings to existing conservatory. Alterations to side + front elevations, new entrance door with rooflight above.
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
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.
14/00849/FULL
Approved
Change of use from residential (Class C3) and office (Class B1) to a private members club (sui generis) and the erection of a single storey glazed conservatory, glazed building link and a green roof over existing servicing area.
▸ Single-storey extensions face less scrutiny than two-storey.
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
Demolish existing conservatory and erect single storey rear extension with roof lights, install glazed doors to rear
▸ Single-storey extensions face less scrutiny than two-storey.
Approved
Works to a Listed Building to allow for the demolition of existing conservatory and building new extension in its place and removal of existing roof covering to access passage and building new roof covering with wall support in its place (resubmission 0393/2016)
▸ Listed building applications succeed when design is sensitive to the original character.
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
Lawful Development Certificate for proposed demolition of existing conservatory and erection of a single storey rear and side extension including insertion 3no roof lights. Loft conversion with larger rear dormer with Juliet balcony in lieu of existing dormers, alterations to existing flat roofs wit
Refused
Lawful Development Certificate for proposed demolition of existing conservatory and erection of a single storey rear and side extension including insertion 3no roof lights. Loft conversion with larger rear dormer with Juliet balcony in lieu of existing dormers, alterations to existing flat roofs wit
Approved
Demolition of existing conservatory, erection of single storey rear extension
▸ 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 under Section 73A of The Town and Country Planning Act 1990 - Variation of Condition 2 (Approved Plans and Documents) of Planning Permission DC/25/00070 dated: 13/03/2025 - Conversion of garage with first floor extension above. Erection of conservatory following demolition of existing. I
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
Demolition of Existing Conservatory and Erection of a Two-Storey Rear Extension
▸ Two-storey extensions face higher scrutiny due to greater neighbour impact.
Refused
Demolition of conservatory and detached garage. Single storey rear extension. Fenestration alterations. Partial carport conversion.
Refused
ERECTION OF HIP TO GABLE, TWO STOREY SIDE/REAR EXTENSION, DORMER EXTENSION ON REAR ROOF SLOPE, ALTERATIONS TO ROOF OF EXISTING CONSERVATORY AND INSTALLATION OF WINDOW AT SECOND FLOOR LEVEL ON SIDE ELEVATION
▸ Two-storey extensions face higher scrutiny due to greater neighbour impact.
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 erection of a two storey wrap-around extension at rear/side elevation
▸ 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
Replace conservatory pitch roof with flat roof including lantern
Approved
Demolition of rear conservatory, and the erection of single storey rear extension
▸ Single-storey extensions face less scrutiny than two-storey.
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
Lawful Development Certificate for proposed demolition of existing conservatory and erection of single story side extension
Approved
Lawful Development Certificate: Remove conservatory and replace with single storey extension
▸ Single-storey extensions face less scrutiny than two-storey.
21/00137/PDVLR
Approved
Prior Notification for Residential Extension: Removal of existing conservatory and replacement with new conservatory/orangery (Part 1 Class A)
▸ Replacing an existing structure is generally viewed more favourably than building new.
Approved
Alterations to Dwellinghouse - Replacement Conservatory Roof
▸ 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
Condition Discharge: Condition 2 (CONSERVATORY ROOF MATERIALS COMPLETION TIMESCALE) for application 25/00680/LBC
160717
Approved
Removal of Existing Conservatory and replace with new Proposed Extension
Approved
T1 Beech - Draw back by 1.5 metres approximately to suitable growth points branches growing over the garden and conservatory.To prevent the tree from spreading too far across the lawn and conservatory.
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
Demolish conservatory/sun room and erect two storey extension at
▸ Two-storey extensions face higher scrutiny due to greater neighbour impact.
09/01445/DC
Approved
Conversion of garage to habitable room and erection of conservatory to rear of dwellinghouse.## PERMITTED DEVELOPMENT ##
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
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
Approved
Proposed construction of single storey rear conservatory extension
▸ Single-storey extensions face less scrutiny than two-storey.
Refused
Construction of single storey extension at side; dormer at rear; removal of rear conservatory (Class C3)
NP/20/0379/FUL
Refused
Proposed balcony to rear, new roof to conservatory, with window and door alterat
Before you spend £2,000+ on drawings — and risk getting refused
Your council may refuse the exact thing that got approved two boroughs away. See what actually gets approved near your property first.
See real decisions near your home →Don’t rely on national averages — see what happens on your street.
✓ Free postcode check
✓ Quick Insight £19
✓ Pro Report £79