Architecture Companies in Cardiff: 157 Active Firms (2026)
Architecture companies in Cardiff design buildings, places and planning-stage schemes under protected-title rules for the city region.
Buying centres tend to sit with property owners, developers, local authorities and construction project teams, rather than with procurement teams buying generic design support. Work usually starts around feasibility, planning and concept design, then extends into technical detailing and coordination when schemes move towards delivery. The typical Cardiff practice looks like a specialist professional-services supplier: small to mid-sized, project-led, and dependent on repeat instructions from commercial, residential, mixed-use and public-sector clients. Engagements are usually substantial enough to involve staged appointments, consultant coordination and professional liability, but not necessarily the enterprise-scale procurement motions seen in national construction consultancies.
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Cardiff has 157 actively trading architecture companies, making the local cohort compact. Reported headcount totals 320 people, with employment present for 82 of 82 practices that publish a headcount, or 100% of that reporting group. The turnover profile also points to a practice-led market: only 1 company sits above £5M, while the remainder are more likely to be owner-managed studios, partnership-style firms or regional professional-services practices. Recent formation is visible, with 26 incorporated since 2022, but the market still reads as a specialist local services base rather than a scaled software-like sector.
Title protection under the Architects Act shapes the boundary of the Cardiff market more than a general licence for design services. The Architects Registration Board is the statutory regulator for the architects’ register and the use of the architect title, while RIBA acts as a professional body and source of practice and economics commentary rather than the statutory regulator. Firms, partnerships and corporate bodies using the protected title need registered-person control, management or supervision, so the compliance question is not just whether a practice produces drawings. It is whether the business holds itself out as architects and has the registered-person oversight needed to do so.
Demand appears tied to the pace of local planning work, commercial fit-out, housing schemes and public-sector estates decisions, so Cardiff practices may remain sensitive to construction-cycle caution. The cohort tends to look heavier at specialist and owner-managed practice level than at scaled regional-platform level, which limits the number of revenue-ranked outliers. Consolidation may occur through succession, multidisciplinary property-services groups or larger practices absorbing specialist teams, but protected-title rules should keep registered-person oversight central. Recent RIBA commentary has been cautious on workloads, which fits a market where professional discipline and pipeline visibility matter more than volume expansion narratives.
What’s in the file
One row per company, 50+ columns — everything below plus each company’s verified directors, from Companies House filings.
Company data
Verified directors — included
157
Active firms
2026
1
Above £5M turnover
Companies House band
26
Incorporated since 2022
Recent company formations
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Key facts
About 1% of the trading cohort reports turnover above £5M (1 of 157 firms) — the rest sits below that revenue band.
16% of the cohort was incorporated since 2022 (26 firms), so a sizeable share is in its first few filing cycles.
Under section 20 of the Architects Act 1997, a business using “architect” in its name, style or title must meet registration, control or supervision requirements.
The Architects Registration Board is the statutory regulator for the architects’ register and title protection; RIBA is a professional body rather than the statutory regulator.
DCMS estimates put the creative industries at £145.8 billion in GVA in 2024, equal to 5.5% of UK GVA.
Within the DCMS creative industries framework, Architecture grew by an estimated 6.8% between 2023 and 2024.
Nearly 70% of European architectural practices are solo operations, pointing to a fragmented market structure.
Top Cardiff Architecture companies
Provides architectural design services for residential and commercial projects, including bespoke new builds, extensions and renovations. Prepares feasibility studies, concept and technical designs,…
Serves homeowners, private residential clients and property developers planning bespoke new builds, extensions, renovations or commercial developments across Cardiff, South Wales, Wales and England.
Financial Health
N/AN/A
Location
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Financial sub-scores
Computed from 5 filingsProvides architectural design and project management services for construction projects. Works on schools, higher education, residential, retail, leisure and mixed‑use developments, and offers…
Serves public- and private-sector construction clients, including developers, local authorities, education and healthcare providers, and retail/leisure operators commissioning residential, mixed-use,…
Financial Health
StableStable · Profitable · -7% CAGR over 5y
Location
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Computed from 5 filingsProvides architectural design and masterplanning services for building projects across sectors including residential, education, healthcare, retail and leisure. Offers refurbishment and regeneration…
Serves public and private sector clients commissioning building projects, including property developers, education providers, healthcare organisations, cultural institutions, leisure operators and…
Financial Health
WeakWeak
Location
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Computed from 5 filingsProvides architectural, interior design, and masterplanning services for residential, commercial, and mixed-use developments. Designs buildings, public spaces, and infrastructure projects, including…
Serves property developers, investors and public-sector clients commissioning residential, co-living, mixed-use, education and transport infrastructure projects.
Financial Health
WeakWeak · -7% CAGR over 4y
Location
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Computed from 5 filingsProvides architectural design, structural and civil engineering, and CDM principal designer consultancy services for construction projects. Offers planning, surveying, design development and…
Serves businesses, developers and project owners seeking architecture, engineering and principal designer support for building projects in the UK and overseas.
Financial Health
StableStable · 0% CAGR over 5y
Location
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Computed from 5 filingsProvides architectural design and planning services for residential developments, care homes, supported living schemes, healthcare facilities and community buildings. Works on projects ranging from…
Serves care home operators, supported living and older persons housing providers, healthcare organisations, cultural and community bodies, public building clients, residential developers and private…
Financial Health
StableStable · -10% CAGR over 4y
Location
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Computed from 5 filingsProvides architectural design services for residential, education, cultural, workplace, industrial and data centre projects. Also undertakes high‑rise and cladding remediation work, heritage…
Serves public-sector bodies, developers, contractors and organisations commissioning projects in residential, education, cultural, leisure, emergency services, workplace, industrial, data centre and…
Financial Health
StableStable · Hiring · 3% CAGR over 4y
Location
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Computed from 5 filingsProvides architectural design and consultancy services, specialising in low‑carbon and timber construction, Passivhaus design, and conservation of historic buildings. Works on housing, private homes,…
Serves clients with projects in sensitive landscapes and historic contexts, including affordable housing providers, private homeowners commissioning modular homes, heritage asset owners, dioceses,…
Financial Health
StrongStrong · Growing, Hiring · 26% CAGR over 4y
Location
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Computed from 2 filingsFinancial Health
StableStable
Location
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Computed from 5 filingsFinancial Health
WeakWeak · 0% CAGR over 4y
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Computed from 5 filingsProvides architectural, urban design and civil engineering services, including planning, design and technical consultancy for residential and commercial building projects, infrastructure works and…
Financial Health
HealthyHealthy · Hiring · 5% CAGR over 4y
Location
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Computed from 5 filingsFinancial Health
StableStable
Location
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Computed from 5 filingsFinancial Health
DistressedDistressed · 0% CAGR over 5y
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Computed from 3 filingsFinancial Health
StableStable · 0% CAGR over 2y
Location
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Computed from 3 filingsFinancial Health
DistressedDistressed · 0% CAGR over 2y
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Computed from 4 filingsFinancial Health
DistressedDistressed
Location
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Computed from 5 filingsProvides architectural design services for residential, commercial, cultural and public projects. Works on building design, interior fit-outs, pavilions and housing schemes, developing concepts and…
Serves private residential clients, commercial and residential developers, cultural organisations and public-sector bodies commissioning architectural projects across varied scales.
Financial Health
HealthyHealthy · -68% CAGR over 4y
Location
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Computed from 5 filingsFinancial Health
StrongStrong · Hiring · 19% CAGR over 4y
Location
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Computed from 5 filingsFinancial Health
WeakWeak · Hiring · 19% CAGR over 4y
Location
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Computed from 3 filingsFinancial Health
WeakWeak · -91% CAGR over 2y
Location
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Computed from 5 filingsFinancial Health
HealthyHealthy · Hiring · 8% CAGR over 5y
Location
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Computed from 3 filingsFinancial Health
StableStable · 0% CAGR over 2y
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Computed from 5 filingsFinancial Health
DistressedDistressed
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Computed from 5 filingsFinancial Health
DistressedDistressed · 0% CAGR over 4y
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Computed from 3 filingsFinancial Health
DistressedDistressed · -90% CAGR over 2y
Location
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Computed from 5 filingsFinancial Health
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Computed from 5 filingsFinancial Health
DistressedDistressed
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Computed from 5 filingsFinancial Health
WeakWeak · 0% CAGR over 4y
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Computed from 5 filingsFinancial Health
HealthyHealthy
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Computed from 5 filingsFinancial Health
DistressedDistressed
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Financial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed
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Computed from 5 filingsFinancial Health
StrongStrong · Growing · 0% CAGR over 4y
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Computed from 5 filingsFinancial Health
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Computed from 3 filingsFinancial Health
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Computed from 4 filingsFinancial Health
StrongStrong
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Computed from 5 filingsProvides architectural design services for residential and other building projects. Prepares design concepts, planning drawings and technical documentation, and works with clients during project…
Serves private residential clients, homeowners and property owners around Newport and South Wales, plus local organisations with building redevelopment projects.
Financial Health
StrongStrong · Growing, Hiring · 6% CAGR over 4y
Location
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Computed from 3 filingsProvides architecture and development consultancy services for residential and mixed‑use projects. Services include masterplanning, layout and house type design, planning support, development…
Serves UK housebuilders, housing developers, property developers, landowners and private individuals pursuing residential, affordable housing, mixed-use and bespoke private housing projects.
Financial Health
StableStable · 0% CAGR over 2y
Location
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Computed from 5 filingsArchitectural practice providing building design and planning services for residential houses, housing developments and community buildings. Projects include new dwellings, replacement homes, housing…
Serves private residential clients, property developers and organisations commissioning housing, conversions and civic or environmental buildings, mainly across Wales and western England.
Financial Health
StableStable · Hiring · 2% CAGR over 4y
Location
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Provides architectural design and building consultancy services for residential, retail and leisure developments, including planning submissions, visualisations, structural and highway design, energy…
Serves B2B clients commissioning building projects, including retail operators, residential developers, retirement and care living providers, student accommodation developers, leisure businesses and…
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N/AN/A
Location
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Computed from 4 filingsProvides architectural design and consultancy services for commercial developments, including feasibility studies, concept design, planning applications, urban design and masterplanning. Manages…
Serves businesses and property developers commissioning commercial projects, typically organisations needing support on £0.5m-£30m schemes from concept through completion.
Financial Health
HealthyHealthy · 0% CAGR over 3y
Location
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Computed from 5 filingsProvides architectural design services focused on residential housing developments. Offers urban design and masterplanning for development land, and produces detailed technical drawings and…
Serves B2B clients in residential development, including housebuilders, strategic land managers and development consultants working on housing schemes and large land parcels.
Financial Health
WeakWeak · Hiring · 3% CAGR over 4y
Location
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Computed from 5 filingsProvides architectural design and planning services for residential, education, healthcare, retail and commercial developments. Produces building designs, drawings and 3D models, and supports…
Serves domestic homeowners and commercial clients across the UK, including schools, healthcare providers, offices, leisure and retail operators, housebuilders and residential developers.
Financial Health
HealthyHealthy · Growing · 0% CAGR over 4y
Location
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Computed from 3 filingsProvides architectural design services specialising in the care sector, including care homes, nursing homes, and retirement villages. Works with clients, consultants, and contractors on the planning…
Serves B2B clients in the care sector, including care home operators, retirement village developers, nursing home providers and charitable/social care organisations commissioning later-living…
Financial Health
WeakWeak · 5% CAGR over 2y
Location
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Computed from 5 filingsFinancial Health
DistressedDistressed
Location
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Computed from 5 filingsProvides architectural design services for residential and other building projects, covering concept design, planning, and detailed construction drawings, and supporting projects through design…
Serves property developers, housebuilders and other clients commissioning architectural projects of varying sizes, with evidence of residential apartment work for Bellway Homes.
Financial Health
WeakWeak · -20% CAGR over 4y
Location
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Computed from 5 filingsProvides architectural design and planning services for building projects, including concept design, project development, and preparation of drawings and technical documentation to support planning…
Financial Health
WeakWeak · -5% CAGR over 4y
Location
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How Cardiff Architecture companies work and how to sell to them
What they do
Cardiff architecture practices earn revenue mainly through fee-based professional services, not product resale. Fees are commonly structured as staged appointments, fixed sums for defined scopes, hourly work for early advice, or a percentage of construction value on larger schemes. Revenue follows project milestones: feasibility, planning submissions, developed design, technical packages, tender support and sometimes contract administration. Some practices add planning advice, interior design, conservation, sustainability assessment or visualisation, but the commercial unit is still a commissioned design project. Repeat work matters because each instruction carries mobilisation cost, consultant coordination and professional indemnity exposure, so practices tend to value clients with a visible pipeline rather than isolated drawing tasks.
Who they sell to
Most Cardiff architecture firms sell to property owners, developers, housing providers, local authorities, education estates teams and commercial occupiers. The buying group usually includes a client-side project sponsor, development or estates lead, cost consultant, planning adviser and sometimes a contractor if the scheme is already moving towards delivery. Smaller refurbishments and private residential work are often referral-led and partner-led, while public-sector and mixed-use projects are more likely to involve formal fee proposals, frameworks or tender processes. Sales cycles can be short for advisory work, but planning-led schemes usually take longer because budgets, land ownership, planning risk and consultant teams need to align before appointment.
What they buy
Most architecture practices tend to spend on tools and services that protect fee margin, coordinate project information and reduce rework. Common categories include drawing and modelling software, building information modelling coordination, project accounting, time recording, resource planning, document management, specification writing, cloud storage and cyber security. They also buy professional indemnity insurance, legal advice, accountancy, tax support, recruitment, payroll, training and IT support. Firms with a steadier commercial pipeline may also invest in CRM, bid management, proposal templates, website work, photography, visualisation and sector-specific marketing. Purchases usually need to fit project-based workflows, rather than generic office administration alone.
Why and how to sell to them
Architecture buyers tend to evaluate suppliers when workload changes faster than their operational routines: a new public framework, a larger commercial instruction, senior leadership change, hiring pressure, software renewal, insurance review or a move into more technical delivery work. Pain points are usually fee leakage, planning delays, revision control, consultant coordination, cash collection and liability management. A credible outbound angle starts with project risk and margin, not abstract efficiency. Messages that reference staged fees, utilisation, audit trails, protected-title governance or handover quality are more likely to land with principals and practice managers than broad claims about growth.
How this list is built
Data sources
This list is built from UK Companies House filings, XBRL accounts data, and semantic analysis of each company's public website. Revenue and headcount figures come from the most recent filed accounts; where the company has not filed, values are estimated using a model trained on filed history and peer benchmarks and are labelled as estimates.
Classification
Rather than relying solely on SIC codes, Firmbase classifies each company semantically: the company's website is crawled, an AI model reads what the company actually sells, and the company is placed into the relevant industry and subsectors. SIC codes are used as one signal but not the only one. This means a company that registered under a generic SIC code but pivoted into (for example) fintech is correctly identified as fintech, not as its original SIC category.
Freshness
The underlying company data is refreshed from Companies House continuously; filings appear in the list within days of submission. The curated list ordering is regenerated when the underlying data moves meaningfully (company count changes by more than 5%, a new company enters the top-ranked segment, or the filed-revenue numbers for the top firms change). You can see the last-updated timestamp near the top of the page.
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Frequently asked questions
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