OSG Architecture
OSG Architecture is a Kent-based, RIBA chartered architectural practice delivering full-lifecycle design, technical delivery, master planning, and Building Regulations Principal Designer services across education, residential, commercial, leisure, and major development sectors in the UK.
- Company typePrivate
- Founded2011
- HeadquartersFaversham, United Kingdom
- Headcount11–50
- GTM typeB2B
- OfferingServices
What OSG Architecture does
OSG Architecture Ltd. is a privately held, RIBA chartered architectural practice headquartered in Faversham, Kent, delivering the full suite of architectural services across the UK with a concentration in Kent, London and the wider South East. The firm operates across six published sectors - Commercial, Residential Developer, Residential Private, Education, Leisure and Major Developments - and executes engagements through all RIBA Plan of Work stages (0-7), from site appraisal and feasibility through planning, technical design, and on-site delivery. Core offerings include Architectural Design, Technical Delivery, Master Planning, Sustainable Design (with demonstrated BREEAM Outstanding capability), and a Building Regulations Principal Designer (BRPD) service line introduced in October 2023 under the Building Safety Act 2022. The practice supports these services with a BIM-enabled design workflow built on Autodesk Revit, Enscape for real-time rendering and VR visualisation, and ISO19650-compliant information management, supplemented by related compliance work routed through its sister company SEA Building Compliance Ltd. (sound testing, SBEM, EPC, air testing).
The firm's revenue model is professional services, project-based and quote-driven; fees are not publicly disclosed and scale with engagement scope, complexity, sector and RIBA stage coverage. Go-to-market is sales-led, anchored by long-standing repeat clients (Canterbury Academy Trust spans 10+ years and over a dozen projects), referrals, portfolio-driven marketing via the OSG Hub, and direct tender participation including public-sector frameworks. Notable recent engagements include the £21M Westgate One student accommodation in Canterbury (completed June 2025, Best Architectural Design at the South East Construction Awards 2025), a BRPD framework with EQT Real Estate across the Storex self-storage portfolio (including Europe's tallest self-storage facility at Brentford), the 1,800-home Winterbourne Fields master plan, Kent's first Community Land Trust scheme at Carpenters Yard (March 2024), and multiple Cullum Centres delivered with the National Autistic Society. Employee headcount is in the 11-50 band, the firm is independent with no disclosed external investment or parent company, and revenue figures are not publicly disclosed.
OSG Architecture firmographics
Firmographics- Name
- OSG Architecture
- Legal name
- OSG Architecture Ltd.
- Website
- https://osgarchitecture.com
- Company type
- Private
- Founded year
- 2011
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- OSG Architecture is a Kent-based, RIBA chartered architectural practice delivering full-lifecycle design, technical delivery, master planning, and Building Regulations Principal Designer services across education, residential, commercial, leisure, and major development sectors in the UK.
- Ownership category
- akta.pro rank
OSG Architecture industry classification
Industry- Product category
- Architectural Services
- NAICS
- Architectural Services (541310), Interior Design Services (54141)
- SIC
- Services-Engineering Services (8711)
- akta.pro primary industry
- Architectural Design Services (BPAHAKAA)
- akta.pro secondary industry
- Space Planning & Workplace Design (BPAHAKAI)
Keywords
Where OSG Architecture is headquartered
LocationHeadquarters
- HQ city
- Faversham
- HQ country
- United Kingdom
- HQ region
- Europe
Offices1 record
Markets served
OSG Architecture business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure
Revenue model
- Architectural Design and Technical Services: Professional fees for architectural design services across RIBA stages 0-7, including concept design, planning applications, technical delivery, and project management. Revenue is generated through project-based commissions with fees structured around the scope and complexity of each engagement.
- Building Regulations Principal Designer (BRPD) Services: Standalone BRPD services for projects where OSG is not the lead architect, providing regulatory compliance oversight. This represents an additional service stream beyond traditional architectural fees.
- Master Planning Services: Strategic master planning engagements for large-scale developments including new villages and urban extensions, generating fees for comprehensive planning and design services.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Multi-year contract | Building Regulations Principal Designer services |
Go-to-market motion1 record
Distribution channels3 records
Marketing channels6 records
OSG Architecture product offering
Product offeringCore offering
OSG Architecture is a RIBA-chartered architectural practice delivering the full suite of architectural services across the RIBA Plan of Work Stages 0–7, including architectural design, technical delivery, master planning, sustainable design (BREEAM), BIM/3D design and visualisation, Building Regulations Principal Designer (BRPD) compliance, remodelling/fit-out, interior design, and client advisory/project management. The firm also offers BRPD as a standalone service to projects where it is not the lead architect, and participates in collaborative construction innovation such as the OSKOP MMC system.
Product overview
OSG Architecture is an award-winning architectural practice offering a comprehensive suite of architectural services delivered from Kent for clients across the UK. The core offering consists of Architectural Design, Technical Delivery, Building Regulations Principal Designer (BRPD), BIM/3D Design & Visualisation, Sustainable Design, Master Planning, Remodelling/Upgrades & Fit-Out, and Client Advisory/Project Management services. These services are delivered across the full RIBA Plan of Work stages 0-7. Supplementary services include Interior Design and Building Compliance Services (via sister company SEA Building Compliance Ltd). The practice also provides Building Regulations Principal Designer as a standalone service for third-party projects where they are not delivering technical design. Recent notable projects include Westgate One (student accommodation, awarded Best Architectural Design at South East Construction Awards) and OSKOP (Open Source Kit of Parts, a Modern Methods of Construction system developed in collaboration with industry partners, winner of the Structural Timber Awards Product Innovation category).
Differentiator
Problem solved
Functional benefit
Products and services
- Architectural Design Comprehensive architectural design service delivering projects across the full range of RIBA architectural stages, from site appraisals and feasibility studies through to technical design and delivery, for residential, commercial, and educational clients.
- Technical Delivery Technical design service taking projects from RIBA Stage 3 through to completion on site, delivering complex and challenging schemes in all sectors as lead consultant, including acting as Building Regulations Principal Designer.
- Building Regulations Principal Designer (BRPD)
- BIM, 3D Design & Visualisation
- Sustainable Design
- Master Planning
- Remodelling, Upgrades & Fit-Out
- Client Advisory / Project Management
- Interior Design
Quantifiable outcome
- Less than 1% of new non-domestic buildings achieve BREEAM Outstanding rating - OSG has demonstrated capability to deliver this standard
- +3 more outcomes
Companies that use OSG Architecture
Customer profileNamed customers10 records
Segments5 records
Ideal customer profiles4 records
OSG Architecture technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature5 records
OSG Architecture partnerships and signals
Strategic signalPartnerships
13 partnerships are on record, tiered core, strategic and minor.
- EQT Real EstatecoreOSG Architecture appointed to EQT Real Estate Framework to provide Building Regulations Principal Designer (BRPD) services across multiple Storex self-storage development sites. This framework arrangement provides ongoing project pipeline and consistent engagement for BRPD services, supporting BSAct compliance across the Storex portfolio in the UK.
- OSKOP ConsortiumstrategicOSKOP (Open Source Kit of Parts) is a collaborative construction system developed through partnership between architects, contractors, and manufacturers. OSG Architecture has been actively engaged in developing this platform-based MMC system for schools and public buildings, which won the Product Innovation award at the Structural Timber Awards.
- SEA Building CompliancecoreSister company providing building compliance services including sound testing, acoustic surveys, SBEM calculations, EPC certificates, and air testing. OSG refers clients for these specialist services and collaborates on projects requiring compliance expertise.
- The Cullum Family TrustcorePartnership with The Cullum Family Trust and National Autistic Society for the design and delivery of Cullum Centres - specialist resource provision for autistic students within mainstream schools. OSG has delivered multiple Cullum Centres across Kent.
- National Autistic SocietycoreCollaboration partner for Cullum Centre SRP designs, providing expertise on autism-friendly design requirements for specialist educational facilities integrated into mainstream schools.
- English Rural Housing AssociationcorePartnership delivering community-led housing through Carpenters Yard - Kent's first Community Land Trust project. ERHA partnered with Shepherdswell and Coldred CLT to provide affordable housing on rural exception site.
- StorexcoreSelf-storage developer for whom OSG provides BRPD services across multiple UK sites under EQT Real Estate framework. Projects include Loughton (10,000m², five-storey) and Brentford (11-storey, tallest self-storage in Europe).
- The Canterbury Academy TrustcoreLong-standing client relationship spanning over a decade with over a dozen projects completed. OSG has delivered multiple SEN facilities including Cullum Centres, Hearing Impairment Unit, and Primary School SEN provision.
- Swale Academies TrustminorNew client partnership for third Cullum Centre commission in Peacehaven, East Sussex - extending OSG's SEN design expertise beyond Kent into East Sussex.
- HarwoodminorBuilding compliance consultancy collaborated with OSG and SEA on innovative Part O design solution for new residential development, addressing overheating regulations and security requirements.
- Kent County CouncilminorPublic sector client for various education and development projects. Listed as a client on the website's client portfolio section.
- Paul Roberts & AssociatescoreClient for Westgate One student accommodation project (£21 million). Paul Roberts Developments appointed OSG for redesign and technical delivery of award-winning Canterbury development.
- Abbott ConstructioncoreMain contractor partner for multiple OSG projects including Westgate One and Canterbury Academy SEN facilities. Collaborative relationship on design-build projects.
Scale indicators12 records
Recent moves6 records
Expansion highlights5 records
OSG Architecture competitors and assessment
Company assessmentDirect peers
- Stride Treglown: UK architectural practice with multi-sector portfolio including education, residential, healthcare, and commercial. Comparable scale and service offering with similar project types across education and residential sectors. <parameter name="peer_description">
- HTA Design LLP: Mid-size UK architectural practice with strong residential, education, and master planning focus. Similar scale and service offering to OSG, with a comparable sector mix across housing, education, and public sector commissions across London and the South East. <parameter name="peer_description">
- PRP Architects: UK architectural firm specializing in residential design with a significant education and public sector portfolio. Comparable in scale, sector focus, and project types including affordable housing, education facilities, and SEN provision. <parameter name="peer_description">
- Mae Architects: Smaller UK practice with residential and education focus. Comparable in size and mid-market positioning with similar service offering across education and residential sectors in the London market. <parameter name="peer_description">
- Corstorphine & Wright: UK architectural firm with sector spread across education, residential, healthcare, and commercial. Comparable mid-size scale, BIM-enabled workflow, and similar service offering to OSG Architecture. <parameter name="peer_description">
- Haworth Tompkins: London-based UK architectural practice with strong education, cultural, and theatre portfolio. Similar mid-market positioning with comparable services and project complexity to OSG, particularly in education and heritage-sensitive settings. <parameter name="peer_description">
Broad incumbents
- Foster + Partners: Global architecture and design firm with UK headquarters. Operates at vastly larger scale but competes for premium education, residential, and commercial commissions in same UK market segments, particularly on flagship public sector projects. <parameter name="peer_description">
- AHMM (Allford Hall Monaghan Morris): Major UK architectural practice with significant education, residential, and commercial portfolio. Operates at larger scale but directly competes for public sector and commercial commissions similar to OSG's work, including education and mixed-use developments. <parameter name="peer_description">
- Allies and Morrison: Established UK architectural practice with portfolio across residential, education, and cultural sectors. Operates at larger scale but directly competes for similar commissions including public sector, master planning, and education work. <parameter name="peer_description">
- BDP (Building Design Partnership): Major UK architectural and engineering practice with broad sector coverage including education, healthcare, and commercial. Operates at much larger scale but provides overlapping architectural services in same geographies including education sector commissions. <parameter name="peer_description">
Market position
Strengths1 record
Weaknesses1 record
Competitive moat5 records
Key risks7 records
Key highlights7 records
Customer concentration
OSG Architecture social profiles
Digital presenceOSG Architecture compliance and trust
Trust signalCompliance2 records
OSG Architecture financial estimates
Financial estimateRevenue estimate
Valuation estimate
OSG Architecture leadership team
Management profileNumber of profiles
Profiles2 records
OSG Architecture subsidiaries and ownership
Company hierarchySubsidiaries1 record
OSG Architecture funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
OSG Architecture M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about OSG Architecture
What does OSG Architecture do?
OSG Architecture is a RIBA-chartered architectural practice delivering the full suite of architectural services across the RIBA Plan of Work Stages 0–7, including architectural design, technical delivery, master planning, sustainable design (BREEAM), BIM/3D design and visualisation, Building Regulations Principal Designer (BRPD) compliance, remodelling/fit-out, interior design, and client advisory/project management. The firm also offers BRPD as a standalone service to projects where it is not the lead architect, and participates in collaborative construction innovation such as the OSKOP MMC system.
Is OSG Architecture a public or private company?
OSG Architecture is a private company. It is classified as unknown and is currently operating.
When was OSG Architecture founded?
OSG Architecture was founded in 2011. It employs 11 to 50 people.
Where is OSG Architecture based?
OSG Architecture is headquartered in Faversham, United Kingdom, in the Europe region.
How does OSG Architecture make money?
Three revenue lines are on record. Architectural Design and Technical Services are the primary driver. The others are building Regulations Principal Designer (BRPD) Services and master Planning Services.
Who are OSG Architecture's main competitors?
Direct peers on record are Stride Treglown, HTA Design LLP, PRP Architects, Mae Architects, Corstorphine & Wright and Haworth Tompkins. Broad incumbents are Foster + Partners, AHMM (Allford Hall Monaghan Morris), Allies and Morrison and BDP (Building Design Partnership).
Does OSG Architecture have an API?
No public API is recorded for OSG Architecture.
What industry is OSG Architecture in?
OSG Architecture's product category is Architectural Services. Its primary akta.pro industry code is BPAHAKAA, Architectural Design Services, with a secondary code of BPAHAKAI, Space Planning & Workplace Design. Its NAICS code is 541310 and its SIC code is 8711.