Online Architectural Services

What Online Architectural Services does

Online Architectural Services Ltd (OAS) is a privately held London-based architectural and planning consultancy founded in January 2017 and headquartered at 7 Bell Yard, London WC2A 2JR. The firm delivers a full suite of residential and commercial architectural services across all 32 London boroughs, including planning applications (Certificate of Lawfulness, Householder, Full Planning, HMO, Flat Conversion, New Build, Appeals), interior design (2D and 3D), structural engineering (calculations, surveys, reports), building regulations drawings, party wall services under the Party Wall Act 1996, and Land Registry compliant plans. Service delivery is structured around a digital-first workflow with remote support, intake via website quote form, phone, and email.

The underlying technology stack is standard architectural CAD software for 2D/3D design and digital planning submission systems; no proprietary AI, software platform, or API is offered. Revenue is generated through project-based professional services fees with fixed transparent pricing and staged milestone payments (each stage paid prior to commencement). The primary customer segments are London residential property owners (homeowners seeking extensions, loft/garage conversions, HMO and flat conversions), with secondary segments in property developers and heritage/conservation-area property owners. Customer acquisition relies on a content-driven SEO strategy (102+ published articles), organic social media across Facebook, LinkedIn, Twitter, and Instagram, and email marketing — with no institutional funding, no enterprise sales motion, and no disclosed revenue.

The firm is led by CEO G P Austen and a 13-person multidisciplinary team spanning planning, structural engineering, party wall surveying, interior design, surveying, project management, HR, and IT support. Ownership is founder/management-controlled with no parent company, subsidiaries, or external investors identified. Operating geographies are restricted to the United Kingdom, with stated expertise across all 32 London boroughs but no disclosed activity outside London.

Name

Online Architectural Services

Legal name

Online Architectural Services Ltd

Website

https://onlinearchitecturalservices.com

Company type

Private

Founded year

2017

Operating status

Operating

Short description

Online Architectural Services is a London-based architectural and planning consultancy (founded 2017) delivering residential and commercial planning applications, interior design, structural engineering, party wall, and building regulation services across all 32 London boroughs to homeowners, developers, and heritage property owners via a digital-first workflow.

Ownership category

akta.pro rank

Product category

Architectural Services

NAICS

Architectural Services (54131), Engineering Services (54133), Interior Design Services (54141)

SIC

Services-Engineering Services (8711), Services-Engineering, Accounting, Research, Management (8700)

akta.pro primary industry

Architectural Design Services (BPAHAKAA)

akta.pro secondary industries

Interior Design Services (BPAHAKAB), Civil & Structural Engineering Consulting (BPAHAIAA), ADU Design, Architecture & Engineering (HSAPAMAF)

Keywords

• Architectural design services
• Planning application consultancy
• Structural engineering services
• Party wall surveying
• Building regulation drawings

Headquarters

HQ city

London

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2C

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Technology or R&D, Infrastructure

Revenue model

1. Architectural Design Services: Project-based fees for architectural drawings and design services including planning drawings, design and access statements, and technical documentation
2. Planning Application Services: Fees for submitting and managing planning applications to local authorities, including certificate of lawfulness, householder applications, full planning, HMO, flat conversion, and new build applications
3. Structural Engineering Services: Structural calculations, surveys, and reports provided through their team of expert engineers (may also involve separately appointed consultants)
4. Party Wall Survey Services: Party wall notices and surveys to protect property rights and maintain neighbor relations, including Schedule of Condition and Party Wall Awards
5. Land Registry Compliant Plans: Professional plans for property registration, lease creation, and title splitting for property transactions

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels4 records

Core offering

Online Architectural Services is a London-based consultancy delivering architectural design, planning application, structural engineering, interior design, building regulation, party wall, and land registry compliant plan services for residential and commercial property projects. The firm operates through an online-first, fully digital workflow with remote support, serving customers across all 32 London boroughs via a quote-based engagement model with fixed transparent fees.

Product overview

Online Architectural Services provides a comprehensive suite of architectural, planning, and structural services for residential and commercial projects across London. The core offering consists of Planning Application Services (covering certificates of lawfulness, householder applications, full planning, appeals, HMO, flat conversion, and new build), Interior Design Services (2D and 3D design including visualization), Structural Engineering Services (calculations, surveys, reports), Building Regulation Services (drawings and build over agreements), Party Wall Services (notices, surveys, and awards), and Land Registry Compliant Plans. The company operates as a service-based consultancy rather than a software platform, delivering architectural design, planning applications, and regulatory compliance documentation through a digital-first workflow.

Differentiator

Problem solved

Functional benefit

Products and services

• Planning Application Services End-to-end planning permission support for residential and commercial projects in London, covering Certificate of Lawfulness, Householder Applications, Full Planning, Pre-Planning Applications, Retrospective Planning Applications, Prior Approval Applications, Planning Appeals, HMO applications, Flat Conversions, and New Build projects. Designed for London homeowners, property developers, and heritage property owners navigating borough-specific planning regulations.
• Interior Design Services Professional 2D and 3D interior design services for residential and commercial clients in London, including 2D interior drawings and 3D architectural visualization to bring client visions to life before construction. Targeted at homeowners and developers undertaking renovation or new-build projects.
• Structural Engineering Services Expert structural calculations, surveys, and reports to support safe construction projects in London, including load-bearing wall removal calculations and RSJ beam design. Provided by an in-house team of structural engineers, intended for property owners and developers requiring structural sign-off alongside planning and building regulations work.
• Building Regulation Services Building regulation drawings and Build Over Agreement services to ensure construction projects comply with Building Control requirements in London. Designed for homeowners and developers preparing their projects for Building Control sign-off.
• Party Wall Services Party wall notices and surveys, including Schedule of Condition documentation and Party Wall Awards, designed to protect property rights and maintain neighbor relations under the Party Wall Act 1996. Targeted at London property owners undertaking building work near shared boundaries.
• Land Registry Compliant Plan Professional plans compliant with Land Registry requirements for property registration, title splitting, lease creation, and other property transactions requiring legal certainty. Prepared for homeowners, conveyancers, and developers in London.

Quantifiable outcome

• Successfully secured Full Approval Granted with Conditions for garage conversion project in Ealing
• +1 more outcomes

Named customers1 record

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature1 record

Scale indicators4 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Resi: UK-based online-first residential architecture service offering fixed-fee drawings, planning applications, and extensions to homeowners. Direct competitor to OAS with a similar digital, quote-based GTM and London focus.
• Designtec: London-based residential architecture and design practice covering extensions, loft conversions, and planning applications. Closely comparable in service mix, scale, and London borough focus to OAS.
• HomeOwners Alliance: UK platform connecting homeowners with architects and offering planning/architectural guidance. Overlaps with OAS's content-led, homeowner-centric model and London residential focus.
• Quod Architects: Smaller London-focused architecture practice providing design, planning, and project services for residential extensions and conversions. Comparable niche, scale, and digital customer acquisition to OAS.
• BPR Architects: London residential architecture practice delivering extensions, conversions, and planning submissions across London boroughs. Comparable service portfolio and customer segment to OAS.

Broad incumbents

• Jestico + Whiles: London architecture practice with residential, education, and interior design work. Comparable interior design and broader service breadth, though operating at larger project scale than OAS.
• Foster + Partners: One of the largest London-headquartered architecture practices globally, with broad residential and urban design capability. Same city and broad discipline overlap but not directly competitive for OAS's SMB residential segment.
• Allies and Morrison: Major London architecture firm with extensive residential and masterplanning work, including planning consultations. Operates at much larger scale and brand recognition than OAS but overlaps in residential planning expertise.

Others

• Houzz Pro UK: Online marketplace and software platform for homeowners to find architects and design professionals. Competes for the same online-led homeowner demand OAS targets, though as an enabling platform rather than direct service provider.

Emerging players

• ARC Engineering (UK): UK structural and architectural engineering consultancy serving residential developers and homeowners. Comparable structural calculation/survey stream that OAS offers in-house.

Market position

Strengths4 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

• Xx.com/onlinearchitec4
• Facebookfacebook.com/oasarchitecture.uk
• LinkedInlinkedin.com/company/online-architectural-services
• Instagraminstagram.com/online.architectural.services

Revenue estimate

Valuation estimate

Number of profiles

Profiles6 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Online Architectural Services