- Registration number
- 079147D
- Source checked
- 27 Jun 2026
Public evidence profile
Armstrong Simmonds Architects
Planning history
50 public planning applications
Credentials & registries
Architects Registration Board
Awards & recognition
1 independent award
Evidence summary
Armstrong Simmonds Architects is a RIBA Chartered practice founded in October 2010. They specialise in bespoke residential design, including new builds, basements, extensions, and loft conversions for clients in London.
The team provides a full spectrum of services, from conceptual design through to project completion, with a focus on high-end residential work.
From public sources, July 2026
Trust Score
51out of 100
- Rated 5.0 from 18 reviews
- 1 credential shown
How this score is worked out
Rating5.0 / 5
Review volumeLow · 18
Independent sources1 independent public source
Credentials1 credential shown
How this score is made up
What customers say28.6 of 60
Independent checks16.2 of 30
Track record6.3 of 10
See the independent checks
- Licences and credentials3 of 10.3
- Ways to reach them2.9 of 3.4
- Reviewed on more than one site0 of 5.1
- Registered company details5.1 of 5.1
- Photos of their work4.3 of 4.3
- Industry recognition0.9 of 1.7
Verified planning history
Missing evidence lowers the score because we can't check it. It doesn't mean it doesn't exist. Claiming a profile never changes the score. Evidence context, not a guarantee of workmanship.
Trust at a glance
4 checksWhat we can verify about Armstrong Simmonds Architects
Each card sums up one thing we can check from public sources. Open it for the full detail and the named source. This is evidence context, not a guarantee.
Planning history50 public planning applicationsSee detail →Credentials & registriesArchitects Registration BoardSee detail →Awards & recognition1 independent awardSee detail →Companies HouseActive incorporated businessSee detail →
See the full verification checklist for Armstrong Simmonds Architects →Planning history
Armstrong Simmonds Architects’s real planning history from public planning applications, showing where they’ve worked and how often schemes were approved. · Active 2014–2026
approval rate86%
planning applications50
approved schemes38
councils worked in10
What they work on
The kinds of project Armstrong Simmonds Architects has filed planning applications for.
- Loft conversion10
- Rear extension17
- Side extension5
- Extension33
- Porch3
- Boundary wall / fence / gates5
- Demolition5
- Windows & doors5
- Roof / fenestration12
- Solar / renewables1
Where they’ve worked
Each pin is a planning application, coloured by the council decision we found.
Council experience
- Lambeth · 18 applications since 2017See planning experience in Lambeth
- Croydon · 8 applications since 2014See planning experience in Croydon
- Lewisham · 5 applications since 2015See planning experience in Lewisham
- Southwark · 5 applications since 2016See planning experience in Southwark
- Bromley · 4 applications since 2017See planning experience in Bromley
- Barnet · 3 applications since 2018See planning experience in Barnet
- Ealing · 3 applications since 2016See planning experience in Ealing
- Sutton · 2 applications since 2016See planning experience in Sutton
- Enfield · 1 application since 2021See planning experience in Enfield
- Hammersmith and Fulham · 1 application since 2015See planning experience in Hammersmith and Fulham
Recent planning applications
- Pending15 Canon Beck Road London Southwark SE16 7DJLoft conversion including the insertion of 2 no. rooflights to the front roof slope; conversion of the existing garage to a habitable room with an associated window to replace the existing garage door on the front elevation, and other alterations to the rear elevation fenestration at ground floor level.
- Pending77 Norfolk House Road London SW16 1JQErection of a single storey ground floor wrap around extension.
- Approved10 Hawthorn Road Wallington SM6 0SXErection of a front entrance canopy and installation of external wall insulation to all elevations. Conversion of loft space involving alterations to existing roofline, two dormer windows at rear, rooflights to front and rear, solar panels to front roofslope and extended side chimney stacks.
- Approved157 Hubert Grove London Lambeth SW9 9NZErection of a single-storey ground floor side/rear infill extension, together with alterations to the front and rear fenestration, landscaping the front garden with provision of refuse store and the replacement of the front boundary wall.
- Approved66 Moncrieff Street London Southwark SE15 5HLNon material amendment to planning permission 24/AP/0861 - Construction of a single storey rear and side infill extension. NMA sought: Wall facing neighbouring property to be rendered in slate to match existing finish of neighbouring property ground floor.
- Approved44 Keston Road London Southwark SE15 4JBConstruction of single storey ground floor rear infill extension with remodeling of associated rear bay to include additional rear window and replacement of existing windows to white uPVC.
- Approved13 Riggindale Road London SW16 1QLApplication for a Non-Material Amendment Following a Grant of Planning Permission ref: 24/02781/FUL (Demolition of the side extension, garden store and boiler room, and erection of a single storey ground floor rear and side extension; erection of a boundary wall to the rear; and alterations to the front porch and side access, including the replacement of rear doors/windows with french doors.) granted on 01.11.2024.
- Approved13 Riggindale Road London Lambeth SW16 1QLDemolition of the side extension, garden store and boiler room, and erection of a single storey ground floor rear and side extension; erection of a boundary wall to the rear; and alterations to the front porch and side access, including the replacement of rear doors/windows with french doors.
Show all 50 planning applicationsShow fewer planning applications
- Approved273 Croxted Road London Lambeth SE21 8NNApplication for Certificate of Lawfulness (Proposed) with respect to the erection of a rear dormer together with the installation of 2 rooflights to the front roof slope.
- Approved86 Dovercourt Road London Southwark SE22 8UWDemolition of the existing single storey side return and the construction of a single storey wrap-around extension; removal of small tree; demolition of two chimneys to the outrigger; erection of loft dormer extension and the installation of three rooflights to the side and rear roof slopes.
- Approved112 New Park Road London Lambeth SW2 4LWErection of a front porch extension including alterations to front, rear and side fenestration.
- Approved12 Adelaide Road West Ealing W13 9EBSingle storey (max. 5.7m deep and max. 3.57m high) rear extension (following demolition of canopy) (42 days Prior Notification Process)
- Approved32 Mount Ephraim Lane London SW16 1JGDemolition of the existing side extension and construction of a new side extension. Enlargement of the existing rear extension with alteration to fenestration.
- Approved75 Dalyell Road London SW9 9SAErection of a single storey ground floor wrap-around extension and blocking up of existing first floor side window.
- Refused226 Weir Road London SW12 0NWErection of a loft extension with the installation of a side facing window at second floor and 4 new roof lights to front roof slope.
- Approved48 Natal Road London N11 2HXRear dormer with front rooflights and balustrade.
- Approved58 Holmewood Gardens London SW2 3NBErection of a single storey ground floor rear infill extension and the removal of an existing lean-to for the enlargement of an existing rear door opening.
- Approved10 Wilkinson Street London SW8 1DBErection of single storey side extension; alterations to existing single storey outrigger. removal of render to rear elevation; replacement of all existing windows like for like (double glazed); removal of hedge and gate along front garden and erection of new railings
- Approved18 Durban Road Beckenham BR3 4EZSingle storey rear extension and alterations to front porch PROPOSED LAWFUL DEVELOPMENT CERTIFICATE
- Approved23 Golders Green Crescent London NW11 8LASubmission of details of condition 13 (Sound Insulation Performance Certificate) pursuant to planning permission 18/3671/FUL dated 14/06/18
- Approved6 Park Road Beckenham BR3 1QDFront extension to existing garage and fenestration alterations including the enlargement of the front door and replacement of the front window with a door
- Refused10 Wilkinson Street London SW8 1DBDemolition of ground floor rear extension and erection of single storey side and rear extension; removal of render to rear elevation; replacement of all existing windows like for like (double glazed); removal of hedge and gate along front garden and erection of new railings.
- Approved82 Sandmere Road London SW4 7QHApplication for a non-material amendment following a grant of planning permission ref. 19/02369/FUL (Erection of a single storey ground floor rear infill extension with a rooflight and the enlargement and replacement of a side window and a rear French doors at ground level) granted on 23.08.2019.
- Approved6 Park Road Beckenham BR3 1QDAlterations to front elevation and first floor side elevations
- Approved23 Golders Green Crescent London NW11 8LASubmission of details of conditions 5 (enclosures), 6 (cycle store), 7 (details of amenity area), 11 (landscaping), pursuant to planning permission 18/3671/FUL dated 29/10/2018
- Approved23 Golders Green Crescent London NW11 8LASubmission of details of conditions 4 (amenity areas), 5 (enclosures), 9 (cycle store), 10 (means of enclosure), pursuant to planning permission 18/3672/FUL dated 13/08/2018
- Approved19 Guildersfield Road London SW16 5LSErection of a single storey ground floor rear extension to the ground floor flat.
- Withdrawn19 Prentis Road London SW16 1QBVariation of condition 2 (Approved plans) of Planning Permission ref: 16/02807/FUL (Erection of single storey ground floor rear and side extensions, formation of a courtyard and insertion of a new window at ground floor level in an existing side elevation) granted on 16/08/2016.Variation sought:To reflect changes to the number/positioning/ size of rooflights in the extension, and the dimensions of the extension (to extend utility room 600mm), plus installation of a door (leading from the utility room into the courtyard).
- No decision53 Uxbridge Road Hanwell London W7 3PXApplication for a non-material amendment (S96a) to planning application reference 171020HH dated 24/04/2017 for 'Single storey rear extension; and two storey side infill extension.' Amendment seeking installation of one rooflight to front roofslope.
- ApprovedChristadelphian Hall Lewin Road London SW16 6JZRenovation of the existing hall and the construction of a new rear building connected with the main space, a side infill extension, roof alterations, new front boundary treatment and associated alterations, to convert the abandoned property into a creative space for young people and adults of the local community to explore the arts.
- ApprovedCartref 59 Beckenham Road West Wickham BR4 0QSElevational alterations and internal refurbishment (proposed). LAWFUL DEVELOPMENT CERTIFICATE
- Withdrawn17 Poynders Road London SW4 8NZErection of a single storey ground floor rear extension to Flat 1
- Approved96 Trinity Rise London SW2 2QSReplacement of all windows with traditional white painted timber sash and replacement of ground floor rear window with double doors.
- Refused2 Berrymead Gardens Acton London W3 8AARaising of the roofridge; mansard roof extension to front and rear roofslopes; installation of two dormers to front roofslope and three dormers to rear roofslope
- ApprovedFLAT D, 213 STANSTEAD ROAD, LONDON, SE23 1HUThe construction of a dormer roof extension in the rear and side roof slope at Flat D 213 Stanstead Road SE23.
- Approved41 Pytchley Crescent, London, SE19 3QTErection of single storey side/rear extension and first floor side/rear extension; conversion of garage to habitable accommodation
- Approved1 Donkey Alley London SE22 0NYCertificate of Lawful Development (proposed) rear dormer extension
- Withdrawn3 Arlington Close Sutton SM1 3HSErection of a single storey side and rear extension.
- Approved55 Hatch Road, Norbury, London, SW16 4PWErection of dormer extension in rear roof slope
- Approved8 High View Close, London, SE19 2DSErection of single storey rear extension projecting out 4.361 metres with a height to the eaves of 2.98 metres and a maximum heigh of 3.309
- Approved273 Beulah Hill, London, SE19 3ELErection of single storey/first floor side and rear extensions
- Approved7 Virginia Road, Thornton Heath, CR7 8ELErection of single storey rear extension
- Approved7 Virginia Road, Thornton Heath, CR7 8ELErection of gable end roof extension with dormer extension in rear roof slope; installation of rooflights in front roof slope
- Approved164 DEVONSHIRE ROAD, LONDON, SE23 3SZPrior Approval for the construction of a single-storey rear extension at 164 Devonshire Road, SE23, which will extend beyond the rear wall of the original dwelling by 5.5m, for which the maximum height will be 3.365m and the height at the eaves of the proposed extension will be 3m.
- Approved164 DEVONSHIRE ROAD, LONDON, SE23 3SZPrior Approval for the construction of a single-storey rear extension at 164 Devonshire Road, SE23, which will extend beyond the rear wall of the original dwelling by 5.5m, for which the maximum height will be 3.365m and the height at the eaves of the proposed extension will be 3m.
- Refused30 Sundew Avenue London W12 0RSErection of single storey extensions to side and rear of existing main building.
- Approved42 COMO ROAD, LONDON, SE23 2JWLawful Development Certificate (Proposed) in respect of the construction of a single storey rear extension at 42 Como Road SE23.
- Refused31 Croham Mount, South Croydon, CR2 0BRErection of first floor rear extension
- Approved42 COMO ROAD, LONDON, SE23 2JWPrior Approval for the construction of a single-storey rear extension at 42 Como Road SE23, which will extend beyond the rear wall of the original dwelling by 4 metres, for which the maximum height will be 3.6 metres and the height at the eaves of the proposed extension will be 2.8 metres.
- Refused81 Strathyre Avenue, Norbury, London, SW16 4RFErection of single storey rear extension projecting out 4 metres with a height to the eaves of 3 metres and a maximum height of 3.698 metres
Credentials and checks
Credentials, licences and vetting
Credentials and associations
1Credentials and memberships
These credentials and memberships are attributed to named public sources. Check the source before relying on them.
Independent recognition
Awards & recognition
Best of Houzz is an annual award from the home-renovation platform Houzz, given to the professionals its community rates most highly for design or customer service.
View award source (opens in new tab)These are independent third-party awards: recognition earned from review communities and trade bodies, never paid placement.
Companies House registration
ActiveActive incorporated business
Armstrong Simmonds Architects is linked to a Companies House entry. This shows the business registration, not evidence of workmanship or service quality.
Legal nameArmstrong Simmonds Architects
Company number07407440
Incorporated
Registered activityArchitectural activities
Official checkOn the public register
Why this helps you judge trust: this trader is linked to a registered company with named people who are legally accountable for it, on an official register anyone can check, a layer of accountability an unregistered trader doesn't offer. Around 16 years on the register also points to an established business rather than a brand-new one.
Source-listed gallery
1 photoPhotos listed on Houzz
These sources do not label every image as completed work. The gallery may include projects, people, logos or certificates, so it does not count as completed-work evidence.
Reviews · public evidence
What customers say
These review totals are published independently on the named public source below, not testimonials this business chose to show. We show the aggregate rating, review volume, and source attribution we hold so you can weigh the evidence yourself.
5.0out of 5
Where these reviews are published
- Houzz18 reviews · 5.0 avg
Local context
Rated 5.0, in line with the local average for architects in London
Across 325 architects in London, the typical rating is 4.9 out of 5. We compare against the same businesses a homeowner would find searching for this trade locally.
Sources
2 named public sourcesWhere this information comes from
Everything on this page is drawn from named public sources. Where a source provides a public link, you can open the original and dig deeper.
Review sources
Registers and membership directories
Check dates vary by source. Where we hold a date, the check shows it.
About
At Armstrong Simmonds Architects we pride ourselves on being a highly creative team of architects and designers with a passion to tailor bespoke architectural solutions for our clients. We are a RIBA Chartered practice founded in October 2010. Our team has a high level of experience in the residential sector. We work on a wide range of projects including high-end residential design, new builds, basements, extensions & loft conversions. We provide the full spectrum of services covering all RIBA work stages including surveying, briefing, scheme design, 3D modelling, planning, building control, detailing, tendering, contract administration and interior design. We will diligently guide you through each stage of the process from conceptual design through to the completion of your dream project.
Services they list
3D RenderingAccessible DesignArchitectural DesignArchitectural DrawingsBasement ConversionBasement DesignBathroom DesignBoot Room DesignBuilding ConservationBuilding DesignCustom Build HomesDecking Design
Listed on public sources or the business's own website; check directly that they cover your job before you book.
Independent checks
About this business
How long they've really been tradingIndependent sources agree they've been operating since at least 2010. That's 16 years, confirmed across 3 separate sources.
Company registered2010Planning approvals since2014Award-winning since2017
A real, registered businessWe cross-checked Companies House: this business is officially registered for work that matches the architect services it advertises - independent confirmation it's a genuine business set up to do this kind of work, not just a directory entry.
Your own checks
What to check before you hire
Worth checking yourself
Only a few public reviews are shown. Ask for recent references you can contact.
Their public evidence comes from a single source. Look them up on another site before deciding.
Verify at the sourceCheck them yourself
"Architect" is a title protected by law - only people on the official Architects Register (held by ARB) may use it. Confirm they're on it before you commission a design.
Check the Architects RegisterOnly someone on the Architects Registration Board (ARB) register may legally call themselves an 'architect' in the UK. Ask for their ARB number and check it free at arb.org.uk. An 'architectural designer' or 'technologist' is a different, unregistered role (often capable, but not the same protection).
Agree how they charge before any work starts (a percentage of the build cost, a fixed fee, or an hourly rate) and exactly which stages it covers (concept design, planning application, building-regulations drawings, work on site), so there are no surprises later.
Confirm what they will actually handle versus what is excluded (the planning application, the building-control drawings, and whether they will administer the builder's contract on site), and get it, and a portfolio of similar projects, in writing.
Want an extra legitimacy check? Run the Cowboy Checker on Armstrong Simmonds Architects before you contact them.
Run Cowboy Checker →Good to know
Common questions about Armstrong Simmonds Architects
Is Armstrong Simmonds Architects a legitimate business?
Armstrong Simmonds Architects has 18 independent public reviews, rated 5 out of 5. It is a registered business on Companies House, listed as active, and the public register shows no adverse status (no dissolution, insolvency or strike-off) against it. This is independent public evidence gathered from named public sources (no ads, no paid placement), not a guarantee of workmanship. If anything here is out of date, the business can request a correction.
What do customers say about Armstrong Simmonds Architects?
Armstrong Simmonds Architects has 18 public reviews, averaging 5 out of 5. The reviews section shows the aggregate rating, review volume, and review source information we hold.
How do I know Armstrong Simmonds Architects' reviews are genuine?
Armstrong Simmonds Architects' 18 public reviews come from a named public review source. MyTrustedTraders brings this public evidence together with no ads and no paid placement: we show the review source information and aggregate rating we hold rather than selling rankings, so you can weigh the evidence for yourself.
Is Armstrong Simmonds Architects qualified and accredited?
We hold 1 independently sourced credential for Armstrong Simmonds Architects, including Architects Registration Board. Each is attributed to the body that issued it in the credentials section. For example, Architects Registration Board is the Architects Registration Board: by law you must be ARB-registered to call yourself an architect in the UK.
Has Armstrong Simmonds Architects won any awards?
Armstrong Simmonds Architects holds 1 independent award, including 6× Best of Houzz winner (2025, 2024, 2023, 2022, 2018, 2017). These are third-party awards: recognition that has to be won, not self-issued.
Is Armstrong Simmonds Architects a registered business?
Armstrong Simmonds Architects is a registered business on Companies House (company number 07407440), incorporated 14 Oct 2010, listed as active. This confirms the legal registration of the business, not evidence of workmanship or service quality.
Has Armstrong Simmonds Architects had planning applications approved?
Public council decisions show 38 approved applications for Armstrong Simmonds Architects across 10 councils, the most recent in 2026. That's an 86% approval rate across 44 decided applications, not a self-declared claim.
What does Armstrong Simmonds Architects specialise in?
Armstrong Simmonds Architects lists specialist services including 3D Rendering, Accessible Design, Architectural Design, Architectural Drawings, Basement Conversion, Basement Design. If your job is one of these, look for it in their listed services or ask them to confirm for your project.
