SIAW LTD
Based on rating, review volume, independent sources and verification. Evidence context — not a guarantee of workmanship.
What we can verify about SIAW LTD
Each card summarises one evidence dimension from public sources — open it for the full detail and named source. This is evidence context, not a guarantee.
Planning history
SIAW LTD’s real planning history from UK council applications — where they’ve worked and how often schemes were approved. · Active 2015–2025
What they work on
The kinds of project SIAW LTD has filed planning applications for.
- Loft conversion17
- Rear extension25
- Side extension5
- Extension32
- Basement9
- New dwelling4
- Change of use1
- Outbuilding / garden room4
- Porch1
- Listed building / conservation2
- Shopfront / commercial2
- Demolition13
- Roof / fenestration13
Where they’ve worked
Each pin is a planning application, coloured by its recorded decision.
Council experience
- Barnet — 64 applicationsSee planning experience in Barnet
- Westminster — 1 applicationSee planning experience in Westminster
- Newham — 1 applicationSee planning experience in Newham
Recent planning applications
- No decision12 Stratford Place London W1C 1BBEnlarge existing opening between 2 rooms on upper ground floor.
- Approved78 Woodgrange Road Forest Gate London E7 0ENProposed change of use of first floor office into a one bed one person apartment (Use Class C3) and provision of self-contained frontal entrance to proposed dwelling (This application site is located within Forest Gate Town Centre Conservation Area).
- Approved101 Hendon Way London NW2 2LYConversion of existing dwelling into 4no self-contained flats including roof extension involving rear dormer window Associated amenity space, cycle store, storage area, refuse
- Refused15 Wycombe Gardens London NW11 8ANNon-material amendments pursuant to planning permission reference 16/8061/FUL scheme approved by appeal A Ref: APP/N5090/W/17/3179008 dated 11/12/2017 for Demolition of existing building and erection of 4no dwellings with rooms at basement level and roofspace. Associated refuse and recycling. Amendments include alteration to the fenestration to front elevation
- Approved108-112 Regents Park Road London N3 3JGSubmission of details of condition 25 (Demolition and Construction Method Statement) pursuant to planning permission 16/6950/S73 dated 20/03/17
- No decision276 Nether Street London N3 1RJPart single, part two storey rear extension with crown roof. Alteration to roof including 3no roof light to front elevation. Extend width of the front porch.
- Approved276 Nether Street London N3 1RJ2 Single storey rear extensions, extension to roof including hip to gable end and 1no rear dormer windows
- Approved64 Finchley Lane London NW4 1DHSubmission of details for condition 5 (Sound insulation test) pursuant to planning permission 17/0541/FUL dated 08/03/17
- No decision1 Pennine Drive London NW2 1NYConversion of dwelling house into 3no self-contained flats and associated alterations including relocation of front entrance. Provision of car parking to front and refuse storage area to the rear
- Refused15 Wycombe Gardens London NW11 8ANDemolition of existing building and erection of 4no dwellings with rooms at basement level and roofspace
- No decision64 Finchley Lane London NW4 1DHRemoval of condition 7 (Demolition and Construction Method Statement) pursuant to planning permission 17/0541/FUL dated 08/03/2017 for `Conversion into 4no. self contained flats following erection of a single storey rear extension. Associated parking and refuse storage.`
- No decision1 Pennine Drive London NW2 1NYConversion of dwelling house into 2no self-contained flats following part two-storey , part first floor side /rear extensions, conversion of garage into habitable room, erection of a single storey front extension and relocation of front entrance. Extension to roof including 1no roof light to proposed gabled roof over existing flat roof first floor side element and rear dormer to extend existing loft conversion. Provision of additional car parking to front and refuse storage area to the side (AMENDED DESCRIPTION AND DRAWINGS)
- No decision3 Vaughan Avenue London NW4 4HTFirst floor rear extension with crown roof. Alteration to roof including to roof including 2no roof lights to rear elevation. Changes to fenestration including insertion of windows and relocation of front door
- Approved64 Finchley Lane London NW4 1DHSubmission of details of conditions 4 (Refuse) pursuant to planning permission 17/0541/FUL dated 08/03/07
- No decision14 Rowan Walk London N2 0QJSingle storey rear extension
- Approved14 Manor Park Crescent Edgware HA8 7NNSubmission of details of condition 4a and 7a (Subdivision) 6a (Refuse) 10a (Cycle Parking/Storage) pursuant to planning permission 16/4269/FUL dated 06/07/16
- No decision39 Woodstock Road London NW11 8ESConversion of single family dwelling into 4no self-contained flats. Associated landscaping and provision of 1no parking space, cycle storage and refuse and recycling store
- No decision108-112 Regents Park Road London N3 3JGVariation of conditions 1(Approved Plans), 22 (Car Parking), 24 (Access Layout and Ramp) and 26 (Vehicle Warning System) of planning permission 16/3276/FUL dated 13/07/2016 for 'Demolition of existing building and erection 4 storey building with parking at lower ground level to provide 9no self-contained units. Commercial unit (A3 use) at lower ground level.' Variation to include replacement of ramp with a car lift and to change the wording of conditions 22, 24 and 26 to refer to the car lift instead of the ramp
- No decision64 Finchley Lane London NW4 1DHConversion into 4no. self contained flats following erection of a single storey rear extension. Associated parking and refuse storage
- No decision26 Hillcrest Gardens London N3 3EYTwo storey rear extension including crown roof extension with side and rear dormer windows
- No decision64 Finchley Lane London NW4 1DHConversion of single dwelling into 3 no. self-contained flats. New ground and lower ground floor rear extension. 1 no. additional roof light to front. Provision of amenity space, cycle and refuse storage and 2 no. off-street parking spaces (AMENDED DESCRIPTION)
- Approved5 Vaughan Avenue London NW4 4HTSingle storey rear extension
- No decision3 Vaughan Avenue London NW4 4HTPart single, part-two front/side extension with pitched roof to match existing and single storey rear extension. Extension to roof including enlargement to existing rear dormer window and 1no front roof light to front elevation
- Approved20 - 22 Finchley Lane London NW4 1DLSubmission of details for condition 18 Part 1 (Contaminants) pursuant to planning permission H/04254/13 dated 05/11/13
- Refused1 The Ridgeway London NW11 8TDDemolition of existing dwelling and erection of a two storey detached building including rooms in roofspace and basement level comprising of 9no. self-contained flats. Associated amenity space, landscaping, refuse and cycle storage and basement parking
- Refused137 Cricklewood Lane London NW2 1HSUse as HMO (House in multiple occupation) within Use Class C4
- Refused135 Cricklewood Lane London NW2 1HSUse as HMO (House in multiple occupation) within Use Class C4
- Approved137 Hendon Way London NW2 2NASubmission of details for condition 4 (Sound insulation test) pursuant to planning permission F/00728/12 dated 12/06/12
- No decision14 Manor Park Crescent Edgware HA8 7NNConversion of existing dwelling into 3no. self-contained flats including first floor rear extension with associated amenity space, refuse/recycling storage and cycle store
- Approved22A Wessex Gardens London NW11 9RTSingle storey outbuilding providing 1 no. self-contained flat to the rear of the property
- No decisionFlats 1 And 2 Heathwood Court 5 Middleton Road London NW11 7NRSingle storey rear extension to lower ground floor
- No decision31 Northway London NW11 6PBInfill of existing side entrance and creation of new entrance with raised landing. Alterations to existing landscaping to front.
- No decision108-112 Regents Park Road London N3 3JGDemolition of existing building and erection 4 storey building with parking at lower ground level to provide 9no self-contained units. Commercial unit (A3 use) at lower ground level
- Approved20-22 Finchley Lane, London, NW4 1DLSubmission of conditions 5 (Levels) 6 (Materials) 8 (Refuse) 10 (Landscaping) 15 (Sound Insulation) 16 (Air Pollution) 17 (Noise Mitigation) pursuant to planning permission H/04254/13 dated 05/11/13
- Refused64 Finchley Lane London NW4 1DHUse as HMO (House in multiple occupation) within Use Class C4
- No decision49 Hendon Way London NW2 2LXDemolition of existing outbuilding and erection of two-storey side extension to create new dwelling
- Approved122 Hendon Way London NW2 2NGRetention of C4 HMO use (for 5 persons)
- Approved3 Vaughan Avenue London NW4 4HTGround floor rear extensions. Extension to roof including hip to gable and rear dormer (AMENDED DESCRIPTION)
- No decision31 Sherwood Road London NW4 1AEAlterations to the front of the property. Part single, part two storey rear and side extension. New fenestration to the side elevation at ground floor and first floor level. Roof extensions and alterations to include 2 no. rear dormers, 1 no. front rooflights, 2 no. side dormers, redesign to crown roof and enlargement of roof. Associated internal alterations, hardstanding to front drive and landscaping including new rear patio
- Refused22 Wessex Gardens London NW11 9RTFirst floor rear extension
- Approved16 Rundell Crescent London NW4 3BPUse as HMO (House in multiple occupation) (Class C4)
- No decision39 Woodstock Road London NW11 8ESFirst floor rear extension
- Approved22 Holders Hill Avenue London NW4 1EPAncillary outbuilding to the rear of the garden
- Approved25 Holders Hill Avenue London NW4 1ESAncillary outbuilding to the rear of the garden
- Approved22 Wessex Gardens London NW11 9RTRear and side dormer windows to facilitate loft conversion
- Approved137 Cricklewood Lane London NW2 1HSRoof extension involving hip to gable, rear dormer window with 3no rooflights to front elevation to facilitate a loft conversion
- Approved135 Cricklewood Lane London NW2 1HSRoof extension involving hip to gable, rear dormer window with 3no rooflights to front elevation to facilitate a loft conversion
- Approved144 Hendon Way London NW2 2NGUse of the dwellinghouse as a 'house in multiple occupation' (Use Class C4) by not more than six residents
- Refused142 Hendon Way London NW2 2NGRetention of the conversion of single family dwelling in to house of multiple occupancy with 6no room with shared amenities
- Approved112 Sunny Gardens Road London NW4 1RYTwo storey rear extension and single storey side extension. Alterations to roof including new side window to existing side dormer
- Approved16 Rundell Crescent London NW4 3BPTwo storey rear extension, single storey side extension following demolition of existing garage. Roof extension involving rear dormer window. Removal of bay window to first floor and erection of a side gate.
- Approved5 Vaughan Avenue London NW4 4HTRoof extension involving rear dormer window to facilitate a loft conversion
- Refused5-7 Parson Street London NW4 1QDPartial demolition of existing building with retention of 43.5sqm of Class A1 floorspace and construction of 4 storey building containing 9 no. self contained flats with associated off-street parking refuse/recycling stores, cycle storage and amenity space
- Withdrawn14 Manor Park Crescent Edgware HA8 7NNConversion of a single dwelling into 3 self contained flats.
- Approved64 Finchley Lane London NW4 1DHSingle storey rear extension and roof extension involving enlargement of existing rear dormer
- Withdrawn136 - 144 Granville Road London NW2 2LDReserved Matters application seeking approval of layout, external appearance and landscaping for 136-144 Granville Road pursuant to Outline planning permission F/03850/13 dated 13/02/2014 for 'Demolition of existing warehouse building and erection of 3 storey building to provide 9 no. self-contained flats comprising 3 no. three bedroom flats and 6 no. two bedroom flats with associated parking at ground level'
- Withdrawn112 Sunny Gardens Road London NW4 1RYPart single, part two storey side and rear extension, roof extension including side and rear dormer windows and conversion of property into 4 self-contained flats. Associated refuse and cycle stores and 4no. off-street parking spaces
- No decision31 Sherwood Road London NW4 1AEAlterations to the front of the property. Part single, part two storey rear extension. New fenestration to the side elevation at ground floor and first floor level. Roof extensions and alterations to include 2 no. rear dormers, 1 no. front rooflights, 2 no. side dormers, redesign to crown roof and enlargement of roof. Associated internal alterations, hardstanding to front drive and landscaping including new rear patio.
- Refused39 Lawrence Avenue London NW7 4NLChanges and alteration to flat roof of existing single storey rear extension
- No decision43A Golders Green Road London NW11 8EEVariation of Condition 1 (approved plans) for planning permission F/02699/14 dated 15/10/2014. Amendments to include rewording of condition to 'The development hereby permitted shall be carried out in accordance with the following approved plans: GGR13-PP-02 rev B, GGR13-PP-01 rev B, GGR-13-PP-201 revB2, GGR12-PP-202 rev C, GGR/003/2013, Planning Statement, Heritage Statement' following minor changes to rear mansard roof
Strong planning approval history
72% of SIAW LTD's decided planning applications were approved (182 of 252 decisions across 3 councils). 462 applications tracked in total.
What the public record says
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