HMO conversions
C3 to C4 and larger HMO proposals, layout optimisation, communal space, planning constraints and licensing-aware design.
Explore feasibility ↗ RIBA CHARTERED ARCHITECT · ENGLAND & WALES
Architecture that unlocks property potential.
Mayorga Chartered Architect (MCA). Architecture and planning for HMO conversions, commercial property and residential projects.
From the first feasibility sketch to a considered planning strategy, MCA helps property owners and developers make informed decisions about their next project.
✳ Architecture for commercial property owners,
HMO investors and developers across England and Wales
HMO investors and developers across England and Wales
SELECTED WORK / CARDIFF09BED HMO
Former nursery conversion
Planning permission secured · 12 Oct 2026
DESIGN / FEASIBILITY / PLANNING
Architectural illustration
01 / MAYORGA CHARTERED ARCHITECTSCROLL TO EXPLORE ↓
RIBA Chartered ArchitectHMO & change-of-use expertisePlanning to technical designEngland & Wales
01 / WHAT WE DO
DESIGNED AROUND THE INVESTMENT
More than drawings.
Clearer development decisions.
Good design begins with understanding what a site can realistically become. We combine architectural thinking, planning knowledge and practical accommodation standards from the outset.
Planning strategy
Feasibility, pre-applications, Design & Access Statements, supporting statements and responses to complex planning issues.
Our approach ↗Commercial change of use
Adaptation and development of business premises, additional floor space and alternative uses across commercial property.
See projects ↗Technical design
Building Regulations packages, detailed design and coordination with other consultants as a scheme progresses.
Start a conversation ↗02 / SELECTED WORK
HMO & COMMERCIAL SUCCESSES
Work that makes
the case.
Selected MCA commissions from HMO planning to commercial adaptation and residential architecture. Explore confirmed planning successes alongside commissions in design and development.
MCA / CASE STUDY 001
09BEDROOM
HMO
HMO
CARDIFF / ADAPTIVE REUSE 2026
HMO / CHANGE OF USE 01
Red Balloon Nursery — nine-bedroom HMO
Llanedeyrn, Cardiff · Full planning permission secured on 12 October 2026. Application 26/01245/FUL.
Read case study ↗MCA / CASE STUDY 002
05BEDROOM
HMO
HMO
CARDIFF / ADAMSDOWN APPROVED
HMO / PLANNING PERMISSION 02
5 Beresford Road — five-bedroom HMO
Adamsdown, Cardiff · C3 to five-bedroom HMO approved on 26 May 2026. Application 26/00328/FUL.
Read case study ↗MCA / CASE STUDY 007
08BEDROOM
HMO
HMO
CARDIFF / ADAMSDOWN APPROVED
HMO / PLANNING PERMISSION 07
Constellation Street — eight-bedroom HMO
Adamsdown, Cardiff · Change of use, side dormer and external alterations approved on 18 August 2025. Application 25/00881/FUL.
Read case study ↗MCA / CASE STUDY 008
C1SERVICED
ACCOMMODATION
ACCOMMODATION
PORTSMOUTH / CLASS E TO C1 APPROVED
COMMERCIAL / CHANGE OF USE 08
9 Arundel Street — serviced accommodation
Portsmouth · Upper-floor offices to serviced accommodation approved on 21 August 2026. Application 26/00157/FUL.
Read case study ↗MCA / CASE STUDY 009
06BEDROOM
HMO
HMO
PONTYPOOL / CHANGE OF USE APPROVED
COMMERCIAL TO HMO / PLANNING PERMISSION 09
48 George Street — six-bedroom HMO
Pontypool · Change of use of Usk Vets to a six-bedroom HMO with external alterations approved on 9 September 2026. Application 26/P/0331/FUL.
Read case study ↗MCA / CASE STUDY 003
POOLE / CLASS E CONCEPT
COMMERCIAL / ADDITIONAL STOREY 03
Victoria Joinery — additional floor
Poole, Dorset · Commercial premises expansion and pre-application design.
Read case study ↗MCA / CASE STUDY 004
04BEDROOM
HMO
HMO
NEWPORT / C3 TO C4 DESIGN
HMO / CHANGE OF USE 04
Four-bedroom HMO planning package
Newport · Planning and Design & Access work including green infrastructure and flood considerations.
Read case study ↗
MCA PORTFOLIO IMAGERESIDENTIAL / COMPLETED 05
St Mary's Road extension
Ashvale, Surrey · Extension and alterations completed September 2025.
Read case study ↗
MCA PORTFOLIO IMAGERESIDENTIAL / RENOVATION 06
Lilliput coastal renovation
Poole, Dorset · House renovation, rear extension and loft accommodation.
Read case study ↗Project graphics illustrate the type and scale of each commission. Planning approval does not indicate completed construction.
03 / HMO FOCUS
FOR PROPERTY INVESTORS
The right questions
before you buy.
Will planning permission be required? Is there an Article 4 direction? Does the layout support the accommodation you want to create? These are the questions to tackle early.
Request a feasibility discussion ↗01↗
Planning route
Understand the likely application pathway, local policies and change-of-use considerations.
02↗
Space & amenity
Explore room arrangements, communal facilities, circulation and usable accommodation.
03↗
Constraints & coordination
Identify relevant design, licensing, fire strategy coordination and Building Control issues.
04↗
Planning submissions
Prepare drawings and supporting material with a clear architectural and planning rationale.
04 / OUR APPROACH
A PRACTICAL PATH THROUGH THE PROCESS
From opportunity
to application.
Every site is different. A structured early review gives the design and planning strategy a firmer basis.
Discover
Understand the building, brief, constraints and intended use.
Test
Develop layout options and identify planning or technical risks.
Prepare
Coordinate drawings and documents required for submission.
Progress
Support planning and subsequent technical stages as instructed.
SELECTED MCA RESIDENTIAL WORK05 / ALSO AT MCA
RESIDENTIAL ARCHITECTURE
Thoughtful design
for every scale.
Alongside HMO and commercial work, MCA continues to provide architectural services for extensions, loft conversions, new dwellings and sensitive domestic alterations.
Talk to us about a home project ↗MCA
DESIGN / PLANNING / DELIVERY06 / THE PRACTICE
INDEPENDENT. EXPERIENCED. PERSONALLY LED.
Jose Mayorga.
Chartered Architect.
Mayorga Chartered Architect (MCA) is led by Jose Mayorga, a RIBA Chartered Architect qualified since 2009. The practice works across residential and commercial architecture, with a particular focus on planning-led solutions to challenging briefs.
A direct conversation with the architect responsible for your scheme — from its early potential through to the drawings and documents it needs.
Meet your architect ↗07 / START A PROJECT
LET'S TALK ABOUT YOUR PROPERTY
What could your
building become?
Tell us where the property is and what you have in mind. We'll help identify an appropriate first conversation about the scope and planning pathway.