Director-led practice
Your brief and design are led by David Hepburn, keeping architectural judgment close to the project and communication direct.
Hepburn Architects is a director-led, RIBA Chartered practice specialising in homes, residential conversions and small developments across Birmingham.
A good residential project begins before a line is drawn. It starts with the existing house, the people who live there, the planning history and the physical constraints that will shape what is sensible.
Hepburn Architects provides architectural services from its Birmingham studio for homeowners who want to improve a long-term home, clients assessing a purchase, and developers testing a residential opportunity. Our specialism is the detailed territory between an initial ambition and a project that can secure approval and be built with confidence.
For a house extension, that may mean reorganising a compromised ground floor rather than simply adding the largest possible footprint. For a loft conversion, it means resolving headroom, stair geometry, roof form and fire safety as one design problem. For a new home or small development, it requires an honest appraisal of capacity, access, outlook, neighbouring amenity and local character before a scheme becomes fixed.
Planning and technical design are connected throughout. Early proposals anticipate Birmingham City Council’s likely assessment of scale, character, privacy and daylight, while leaving a credible route for structure, drainage, insulation, ventilation and construction. This helps avoid the familiar gap between an attractive planning image and a technically awkward building.
The practice also works on HMOs, house-to-flat conversions and other changes of use. These require more than drawing bedrooms into a plan: the lawful use, occupancy, space standards, refuse, cycle storage, amenity and fire strategy all influence whether a property is suitable.
Residential work benefits from continuity. The person who understands the first conversation should remain close to the design decisions, approvals and technical questions that follow.
Your brief and design are led by David Hepburn, keeping architectural judgment close to the project and communication direct.
The practice works within the professional standards, quality management and client-care expectations attached to RIBA Chartered status.
The title architect is legally protected. David is registered with the Architects Registration Board and accountable to its professional code.
The practice is focused on homes: how existing houses work, how families use space and how residential projects move through approvals.
Design decisions are tested against planning history, local policy, neighbour amenity, character and the evidence an application will need.
Planning drawings are developed into coordinated information covering structure, thermal fabric, drainage, fire safety and construction junctions.
A written, stage-based proposal explains scope, fees, exclusions and likely third-party inputs before an appointment begins.
Contemporary space, daylight and material choices are balanced with the proportions, fabric and setting of the existing building.
Appointments are tailored to the property and project stage. A homeowner may need design and planning support only; a more complex conversion may require feasibility, technical information and consultant coordination.
Rear, side, wrap-around and two-storey extensions designed around daily life, the original house and a realistic approval route.
Explore service 02Dormer, hip-to-gable, rooflight and more complex roof conversions coordinated from stair position to fire safety.
Explore service 03Planning-led design, drawings and supporting information for householder, full and lawful development applications.
Explore service 04Technical drawings that coordinate structure, fabric, fire safety, drainage, ventilation and buildability.
Explore service 05One-off houses, replacement dwellings and infill homes developed through feasibility, planning and technical design.
Explore service 06Planning, space standards, licensing interfaces and technical design for C4 and larger HMO proposals.
Explore service 07Early assessment and application support for residential conversions, subdivisions and material changes of use.
Explore service 08Site-capacity studies and coordinated design for compact infill, backland and small residential development opportunities.
Explore serviceThe case studies below are pulled directly from the practice’s published Sanity project archive. Each records a real location, brief and architectural response.


A contemporary extension and external remodelling project that transforms a substantial detached home through improved proportions, natural materials and a refined modern façade.
View project
A carefully considered rear extension and internal renovation transformed this traditional Harborne home into a bright, contemporary family space. The existing ground floor was reorganised to create an open-plan kitchen, dining and living area, centred around a generous island and connected directly to the garden through full-height glazing. Rooflights, a restrained material palette and integrated storage bring natural light, warmth and functionality into the heart of the home.
View projectOnly established location pages are shown here. Each explains the local housing, planning and design context relevant to that area.
Planning is not a box to tick after the design is finished. The likely approval route should inform the proposal from the outset.
Birmingham City Council assesses applications against national policy, the development plan and relevant local guidance. For domestic work, the most visible questions are often scale, roof form, materials, privacy, daylight and the relationship with neighbouring houses. Yet the correct route can also turn on less obvious facts: when the house was built, how it has been extended before, whether a condition removed permitted development rights, or whether the site sits within a conservation area.
We begin with the planning history and site context, then identify the drawings and supporting information proportionate to the proposal. For sensitive sites this may include a design and access statement, heritage input, tree information, ecology, drainage or specialist planning advice. These are identified early, not discovered at validation.
Read the Birmingham house-extension planning guide for a deeper explanation, or explore the wider Knowledge Centre.
Extensions, roof alterations and domestic outbuildings that fall outside permitted development normally require a householder application. Scale, appearance, garden retention, overlooking, daylight and the relationship with adjoining homes are central considerations.
Some alterations benefit from national permitted development rights, subject to detailed limits and conditions. The original house, earlier additions, land designation and any removed rights must be checked before that route is relied upon.
A certificate can formally establish that proposed work is lawful or that an existing use or development has become lawful through time and evidence. It can be valuable during construction, refinancing or a future sale.
Birmingham’s conservation areas vary greatly in character. A successful proposal should begin with the significance of the place, important views, established materials, trees and the contribution made by the existing building.
Work affecting a listed building’s special architectural or historic interest may require listed building consent as well as planning permission. Internal fabric can be as important as the exterior.
Birmingham’s city-wide Article 4 Direction means a change from a C3 family dwelling to a small C4 HMO requires planning permission. Licensing, space standards and fire safety remain separate considerations.
Conversions to flats, larger HMOs and other residential uses need a clear account of the lawful existing use, proposed operation, amenity, parking, refuse, cycle storage and technical consequences.
Infill and backland proposals are tested for access, site capacity, character, privacy, daylight, trees, drainage, ecology and the quality of accommodation—not simply the maximum number of units.
Planning permission and Building Regulations approval answer different questions. A planning drawing communicates what is proposed; technical information must explain how it will satisfy applicable performance requirements and be constructed.
For an extension, conversion or new home, the technical stage brings together the architectural layout, structural design, fabric performance and building services. Decisions are interdependent. A beam affects ceiling zones; insulation changes junction dimensions; drainage routes influence foundations; and a new open-plan arrangement may alter the fire strategy.
Our role is to develop the design into coordinated plans, sections, details and notes appropriate to the appointment. Structural calculations, energy assessments and other specialist designs are prepared by the relevant consultants and integrated into the wider information set. Building Control remains the approving authority and contractors retain responsibility for workmanship and construction methods.
Foundation assumptions, beams, posts, bearing points, roof alterations and stability are coordinated with the architectural layout and a structural engineer’s design.
Insulation, glazing, airtightness, thermal bridges, ventilation and energy calculations are considered as a connected building-fabric strategy.
Escape routes, alarms, doors, compartmentation, linings and access for the fire service are developed for the particular building and proposed use.
Below-ground routes, rainwater disposal, existing connections and build-over constraints are reviewed before they become site problems.
Plans, sections, details and specifications explain how the approved design is intended to be built and provide the basis for Building Control review.
A more complete and coordinated information package allows contractors to price the same scope, reducing ambiguity before construction starts.
Not every commission needs every service. The appointment is divided into clear stages so that decisions can be made at sensible points and the scope can respond to what the project actually requires.
The first task is to understand why the existing property is not working. More space may be part of the answer, but the underlying issue could be circulation, a dark middle room, poor storage, a disconnected kitchen or competing uses within the same plan. We review the address, planning history, available information and broad budget before recommending the next step.
A measured survey records the geometry needed for design. On more constrained sites, feasibility may also draw on title information, drainage records, tree surveys, ecology, heritage advice or an early structural opinion. These inputs have a cost, but commissioning the right evidence early can prevent a scheme being developed around a false assumption.
Concept work tests the brief in plan, section and external form. Options are compared for more than appearance: they are judged against daylight, movement, furniture, garden connection, planning risk, likely structure and the client’s spending priorities. The aim is not to present endless variations. It is to identify the meaningful choices, explain their consequences and develop a preferred direction.
For existing homes, retained fabric matters. Moving a staircase, removing a chimney breast or opening a long rear wall can transform a plan, but each intervention carries structural and cost implications. A restrained move in the right place can be more valuable than a larger addition that leaves the old house unresolved.
Once the proposal is agreed, the application drawings and supporting material are coordinated for the appropriate route. This may be householder planning permission, a full application, prior approval or a Lawful Development Certificate. We explain what is being submitted, what the authority will assess and which parts remain subject to later technical design.
Consultation responses and officer requests are considered on their merits. A modest amendment can sometimes resolve a precise concern; at other times, a requested change would undermine the brief without addressing policy. The response should be reasoned rather than automatic. Any decision notice and conditions are reviewed before work proceeds.
The planning scheme is then developed for Building Regulations and, where appointed, contractor pricing. This stage establishes wall, floor and roof build-ups; coordinates structural information; considers openings and junctions; and records the performance requirements relevant to the work. Product selection and specialist design responsibilities are identified so they do not sit invisibly between drawings.
Clear tender information improves comparison between quotations. It cannot eliminate every unknown in an existing building, but it reduces the number of important choices left until work is underway. Before appointing a contractor, clients should understand the proposed contract, programme, insurance position, payment structure and how changes will be instructed and valued.
Architectural involvement during construction can range from answering defined design queries to a fuller contract-administration service. The appropriate level depends on the procurement route, contractor and complexity of the project. Site inspections are periodic rather than continuous and do not replace the contractor’s responsibility for construction, safety and compliance.
At completion, Building Control certification, warranties, commissioning information and consultant documents should be assembled and retained. A well-kept project record is useful for operation, future alterations and sale. The final stage is therefore not merely the last site visit; it is the orderly close-out of decisions made throughout the project.
Birmingham’s best opportunities for residential design are found in the differences between its neighbourhoods, not in a single city-wide architectural style.
Terraces and villas in areas such as Harborne, Moseley, Kings Heath and parts of Edgbaston often have strong front elevations but compromised rear plans. Kitchens may be narrow, utility spaces fragmented and the garden poorly connected to the main living rooms. An extension can unlock the house when it improves circulation and daylight as well as floor area. The design must still respect party walls, drainage, neighbouring windows and the proportions of the original building.
Inter-war semi-detached houses form a large part of Birmingham’s suburban identity. Their side passages, hipped roofs and generous rear gardens create opportunities for side, rear, wrap-around and loft additions. They also create recurring planning questions: the visual gap between pairs, a possible terracing effect, the relationship between two-storey work and a neighbour, and whether a hip-to-gable roof alteration sits comfortably in the street.
Later estates can offer more rational plans and larger openings, but they are not constraint-free. Corner plots, open frontages, covenants, consistent building lines and planning conditions can limit apparently simple changes. Some houses have shallow roofs or construction systems that require early structural investigation. A scheme should be based on the actual building, not assumptions made from its age.
Birmingham’s conservation areas include planned estates, industrial quarters, village centres and mature residential suburbs. Edgbaston, Bournville and Jewellery Quarter projects do not share the same heritage logic. The right response comes from understanding what is significant in each place—street rhythm, landscape, plot pattern, materials, roofscape or surviving historic fabric—and deciding where change can be absorbed.
The city continues to grow while households ask existing homes to support working, caring and multigenerational life. Extending is often more practical than moving, but useful space does not follow automatically from a larger footprint. The strongest projects make the original rooms work harder, bring daylight deeper into the plan, create calm storage and utility areas, and form a deliberate threshold to the garden. Architecture adds value when the whole house becomes more coherent.
These practical guides cover the questions that most often shape a Birmingham residential brief.
Very responsive and understands what I’m trying to do with my projects.Ciaran Durkin, BirminghamOther · Birmingham and West Midlands · August 2026 · GoogleRead on Google
Great service! David was on time with the plans, and his advice has been invaluable throughout the process.Avtar, BirminghamBuilding Regulations · Birmingham and West Midlands · September 2025 · MyBuilderRead on MyBuilder
In one statement: first class. I could not have asked for a better service.Lee, BirminghamHouse extension · Birmingham and West Midlands · October 2020 · MyBuilderRead on MyBuilder
These answers are general guidance. Property history, location and the exact proposal can change the position.
Not always. Some extensions may use permitted development rights, but the dimensions, position, original house, previous additions, planning conditions, conservation status and any Article 4 Direction must be checked. Larger, two-storey, side and prominent extensions commonly need a householder application.
Fees vary with the property, size and complexity of the proposal, planning risk and services required. Hepburn Architects provides a written stage-based quotation. The online fee calculator can give an early indication, but a project-specific proposal confirms the actual scope.
A straightforward householder application has a statutory target of eight weeks after validation. Validation delays, consultation, amendments, specialist reports, committee referral or an agreed extension of time can make the overall programme longer.
Yes. We prepare technical drawing packages and coordinate structural and specialist information for Building Control. The precise package depends on the project, construction method and procurement route.
Not always, but a feasibility review before exchange can identify planning constraints, obvious spatial limitations and likely specialist inputs. It cannot remove all purchase risk, and legal, structural and valuation advice remain separate.
Yes. We assess roof volume, headroom, stair position, structure, dormer form, planning constraints, insulation and fire safety together. This avoids a planning-led layout that cannot be resolved technically.
Yes. We support one-off homes, replacement dwellings, infill sites, small developments, conversions and HMOs. Early feasibility can test site capacity and planning risk before a full design appointment.
Yes. Birmingham’s city-wide HMO Article 4 Direction makes planning strategy especially important. We can review use class, layout, room standards, amenity, refuse, cycle storage and fire-safety implications alongside the licensing interface.
Planning considers the use, scale, appearance and external effects of development. Building Regulations deal with health, safety, accessibility and technical performance. Many projects require both, and approval under one does not grant approval under the other.
No. No architect or planning consultant can guarantee a council decision. We can identify constraints, test options, explain risk and prepare a well-reasoned submission with the best realistic prospect of approval.
Yes. We prepare and submit appropriate applications, respond to validation points and monitor the application. Where useful, we can liaise with the planning officer, although the council controls its own process and timescale.
Potentially. Contemporary design can be appropriate where its scale, form, materials and detailing respond intelligently to the significance of the building and area. Conservation does not require imitation, but it does require a convincing design rationale.
We can recommend or coordinate a structural engineer as part of the technical stage. Their calculations and design are a separate professional service, integrated with the architectural drawings.
Yes. We can develop the scheme for Building Regulations, coordinate consultants, prepare tender information and provide further construction-stage services where agreed in the appointment.
We work across Birmingham and adjoining areas, including Harborne, Edgbaston, Moseley, Kings Heath, Bournville, Selly Oak, Hall Green, Erdington, Sutton Coldfield and Solihull. The first step is a review of the property and proposed scope.
Discuss your ideas with Hepburn Architects. Share the property address, the changes you are considering and any drawings or planning information already available.