Turquoise Noise Ltd
Turquoise Noise Ltd is an architectural practice in Welwyn Garden City. See its accreditations, specialisms and planning track record.
Active on Companies House
05512596
Architectural Activities
★ 4.8 Google (18)
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Welwyn Garden City, Hertfordshire, AL7, United Kingdom
About Turquoise Noise Ltd
Established in 2005, this architectural practice is based in Welwyn Garden City, Hertfordshire. The firm has submitted 15 planning applications across 6 local authorities, achieving an 83% approval rate. Their experience spans multiple planning jurisdictions in the UK.
Specialisations
Architecture & Design · Listed Buildings · Conservation Areas · Green Belt
Service Areas
London · Home Counties · Hertfordshire
Reviews
4.8
See reviews 18 reviews on Google
Planning Application Track Record
29
Applications
86%
Approval Rate
8
Local Authorities
Local Authorities
Barnet
Dacorum
East Hertfordshire
Hertsmere
North Hertfordshire
St Albans
West Oxfordshire
Westminster
Application Types
Extensions
9
Other
4
Demolition
3
Change of Use
2
New Dwellings
1
Prior Approval
1
Planning Application History (29)
27 of 29 applications have a map location
3/26/0581/HH
Erection of single storey extension to the side, following demolition of existing conservatory to the side
2 Parkins Close Colliers End Hertfordshire SG11 1ED
Permitted
East Hertfordshire2026-06-0326/00664/LDCP
Single storey side extension following demolition of garage and rear extension. Changes to fenestration.
70 St Albans Road Codicote Hertfordshire SG4 8UU
Permitted
North Hertfordshire2026-03-2426/00796/FPH
Insertion of rear box dormer, front dormer and roof lights to create habitable space at first floor level. Replacement of front porch roof and installation of pergola. Alterations to fenestration.
25 Bury Lane Codicote Hitchin Hertfordshire SG4 8XX
Permitted
North Hertfordshire2026-04-08F/03474/08
Single part two storey rear extension.Renewal of planning permission C098764/05
75 Broughton Avenue, London, N3 3EN
Conditions
Barnet2008-09-1723/0194/HSE
Conversion of loft to habitable space to include insertion of two rear dormers and associated internal alterations.
5 Earls Corner Blanche Lane South Mimms Potters Bar Hertfordshire EN6 3PF
Permitted
Hertsmere2023-02-0622/1350/CLP
Conversion of loft to form habitable space including rear dormer. Certificate of Lawful Development (Proposed).
5 Earls Corner Blanche Lane South Mimms Potters Bar Hertfordshire EN6 3PF
Undecided
Hertsmere2022-08-0319/07331/FULL
Installation of dormer and rooflight on the rear roof slope and installation of a rooflight in closet wing.
First Floor Flat 36 Ilbert Street London W10 4QJ
Rejected
Westminster2019-09-2025/03175/LDP
Partial garage conversion with new garage doors.
6 The Lye Little Gaddesden Berkhamsted Hertfordshire HP4 1UH
Permitted
Dacorum2026-01-0211/1602/P/FP
Erection of extensions and change of use of agricultural land to domestic garden.
Pond Farmhouse Witney Road Finstock
Conditions
West Oxfordshire2011-10-1011/0859/P/FP
Erection of extensions and change of use of agricultural land to domestic garden.
Pond Farmhouse Witney Road Finstock
Withdrawn
West Oxfordshire2011-06-1412/0519/P/FP
Erection of replacement barn and garage buildings.
Pond Farmhouse Witney Road Finstock Chipping Norton Oxfordshire OX7 3DE
Conditions
West Oxfordshire2012-04-0225/4283/PNH
Single storey rear extension with a proposed depth of 6.00m, maximum height of 3.80m and eaves height of 2.60m
70 Church Hill Road Barnet EN4 8UZ
Rejected
Barnet2025-10-273/17/1215/HH
Two storey side extension
17 Cherry Gardens Sawbridgeworth Hertfordshire CM21 9DW
Conditions
East Hertfordshire2017-05-233/26/0380/CLPO
Certificate of lawfulness for a single storey rear extension following the removal of the conservatory
2 Parkins Close Colliers End Hertfordshire SG11 1ED
Withdrawn
East Hertfordshire2026-03-185/2026/1172
Certificate of Lawfulness (proposed) - Single storey rear extension following demolition of conservatory.Walls to be brick to match existing.Roof tiles to be concrete tiles to match existing.Windows and doors will be Aluminium or uPVC to match existing, at 9 Newfield Way St Albans Hertfordshire AL4 0GB
9 Newfield Way St Albans Hertfordshire AL4 0GB
Rejected
St Albans2026-06-1811/0859/P/FP
Erection of extensions and change of use of agricultural land to domestic garden.
Pond Farmhouse Witney Road Finstock
Withdrawn
West Oxfordshire2011-06-1411/1602/P/FP
Erection of extensions and change of use of agricultural land to domestic garden.
Pond Farmhouse Witney Road Finstock
Conditions
West Oxfordshire2011-10-1012/0519/P/FP
Erection of replacement barn and garage buildings.
Pond Farmhouse Witney Road Finstock Chipping Norton Oxfordshire OX7 3DE
Conditions
West Oxfordshire2012-04-025/2026/0258
Single storey rear extension following demolition of existing single storey rear extension at 21 Hammers Gate Chiswell Green St Albans Hertfordshire AL2 3DZ
21 Hammers Gate Chiswell Green St Albans Hertfordshire AL2 3DZ
Conditions
St Albans2026-02-115/2025/1729
Certificate of Lawfulness (proposed) - To partially replace the roof tiles, like for like at 61 West Common Harpenden Hertfordshire AL5 2LD
61 West Common Harpenden Hertfordshire AL5 2LD
Permitted
St Albans2025-09-22Page 1 of 2