Vale of Glamorgan Architects
Residential and Commercial Architecture Services
Vale of Glamorgan Architects Who Know the Area Inside Out
Dennis Hellyar Architects is a RIBA chartered practice and a team of Vale of Glamorgan architects based in Barry. We work with homeowners, businesses, housing associations and community organisations across the Vale, from Penarth and Barry to Cowbridge, Llantwit Major and the rural villages in between. Our studio has been at the heart of the Vale since the practice was founded in 2013, and we know this area better than any other part of our patch.
The Vale of Glamorgan is one of the most varied local authority areas in South Wales. Edwardian and Victorian terraces along the Penarth seafront, interwar and postwar housing in Barry, Georgian market town properties in Cowbridge, stone farmhouses and rural cottages across the Vale's villages, and coastal properties overlooking the Bristol Channel from Llantwit Major to St Athan. Every property type and every location brings its own planning context and its own design challenges.
As Vale of Glamorgan architects with our studio in Barry, we have an unmatched depth of local knowledge. We know how Vale of Glamorgan Council approaches planning applications, which areas carry conservation area status, how the Heritage Coast designation affects what is acceptable along the coastline, and which planning officers handle which parts of the area. That inside knowledge makes a genuine difference to project outcomes.
Whether you are a homeowner in Penarth looking to extend a period property, a farmer in Llancarfan with a barn conversion in mind, a business in Barry town centre planning a refurbishment, or a housing association delivering affordable homes across the Vale, we are the Vale of Glamorgan architects best placed to help.
Vale of Glamorgan Architecture Projects We Have Delivered
Here is a selection of projects our Vale of Glamorgan architects have completed across the area. Each one started with a conversation.
Architectural Services for Vale of Glamorgan Clients
As Vale of Glamorgan architects working across both the residential and commercial sectors, we offer a full range of services from initial feasibility through to completed building. Here is what we most commonly deliver across the Vale:
House Extensions in the Vale of Glamorgan
House extensions are among the most popular projects we deliver across the Vale. Whether you are planning a rear extension to a Victorian terrace in Penarth, a contemporary addition to a period farmhouse near Cowbridge, or a two-storey extension to a family home in Barry, we design extensions that respond to your property's character and meet Vale of Glamorgan Council's planning requirements. Our local knowledge means we understand the specific policies and design expectations that apply to each part of the Vale, including conservation areas, the Heritage Coast and the AONB.
Planning Drawings and Applications
Planning applications in the Vale of Glamorgan require a thorough understanding of Vale of Glamorgan Council's policies and the specific constraints that apply to different parts of the area. We prepare professional planning drawings and supporting documents and manage the submission process on your behalf. Our longstanding working relationship with Vale of Glamorgan Council and our familiarity with its planning team mean we know how to present applications that move forward rather than stall.
Feasibility and Early Advice
Not sure what is possible with your Vale of Glamorgan property? We offer honest, early-stage feasibility advice for residential and commercial clients. We assess your site, review the planning constraints that apply, whether that is a conservation area designation, the Heritage Coast, a listed building or a rural location policy, and give you a clear picture of your options before you commit to anything. Getting this right at the start saves time and money later.
Full Architectural Services
For clients who want complete support from first idea to finished building, we offer a full architectural service across the Vale. We manage the design process, coordinate with structural engineers and specialist consultants, handle planning and building regulations, and administer the building contract through construction. As a locally based team, we are easy to reach and easy to work with at every stage.
Commercial Architecture Across the Vale
We deliver commercial architecture for Vale of Glamorgan businesses, housing associations, councils and community organisations. Our Vale commercial portfolio includes the award-winning Cwrt Parc social housing development in Barry and the GVS Illtud House workspace refurbishment in Llantwit Major, alongside a range of smaller commercial projects across the area. We understand the planning landscape for commercial development across the Vale in detail.
Award-Winning Architectural Firm
Founded in 2013 after 20 years at large practices, Dennis Hellyar Architects brings the rigour of a bigger firm with the personal service clients value most. We are registered with the Architects Registration Board and hold Certified Passive House Designer accreditation, making us well-placed to advise on energy performance and sustainability across all project types.
We are not an outside practice serving the Vale from a distance. We are embedded in the local community, with a studio that has been part of the Barry landscape for over a decade.
From residential extensions in Pontcanna to a £27M social housing regeneration scheme for Cardiff City Council, our track record speaks for itself. Our Cwrt Parc development won the Best Social Housing Award at the Building Excellence Awards 2020.
How Our Architects Work With You
If you have not worked with architects before, here is how our process typically works from first contact to completed project. Not every client needs all of these stages. We are equally happy to provide exactly the level of service your project requires.
Step 1: Initial conversation
We listen to what you are hoping to achieve. There is no commitment at this stage, just a clear, honest conversation about your project, your property and what is realistic within the Vale of Glamorgan planning framework.
Step 2: Feasibility and early advice
We assess your property, review Vale of Glamorgan Council's policies and any site-specific constraints such as conservation area status, Heritage Coast designation or rural location policies, and give you a clear picture of your options before any design work begins.
Step 3: Design development
We develop the design in close collaboration with you, using 3D models and visualisations to communicate proposals. For projects in the Vale's conservation areas, historic towns or along the Heritage Coast, we take particular care to develop designs that respond to the local setting and will be well-received by the planning authority.
Step 4: Planning drawings and submission
We prepare professional planning drawings and manage the submission to Vale of Glamorgan Council on your behalf. Our knowledge of the local planning team and their expectations means applications are prepared to a standard that gives your project the best possible start.
Step 5: Building regulations and construction
Once planning is approved, we can take the project through building regulations, tender and construction, remaining your single point of contact throughout the build.
Ready to get started? An initial conversation with our architects costs nothing and will give you a much clearer picture of what your project could achieve.
Being based in Barry means we are easy to meet in person, easy to reach and closely familiar with the local contractors and consultants who can help bring your project to life. A first conversation costs nothing.
Areas of the Vale of Glamorgan We Cover
Our Vale of Glamorgan architects work across the entire council area. Here are the main towns, villages and areas where we regularly deliver projects.
Barry and the Barry Island Area
Barry is home to our studio and is where we have the deepest roots. We work across all of Barry's residential neighbourhoods, from the Victorian terraces of Barry town to the interwar and postwar housing of Cadoxton, Holton Road and beyond. We have delivered some of our most significant projects here, including the award-winning Cwrt Parc development, and we know Barry's planning context in exceptional detail.
Penarth
Penarth is one of the Vale's most architecturally distinctive towns, with a high concentration of Victorian and Edwardian properties, several conservation areas and significant demand for sensitive extension and renovation work. We work extensively in Penarth and have a strong understanding of Vale of Glamorgan Council's expectations for development in the town's historic areas. Many Penarth clients initially search for Cardiff architects, but our Vale of Glamorgan base makes us particularly well-placed to serve them.
Cowbridge and the Rural Vale
Cowbridge is the Vale's principal market town and features a high proportion of listed buildings, a conservation area covering much of the town centre and strong design expectations from Vale of Glamorgan Council. We work with homeowners and businesses across Cowbridge and the surrounding villages including Llanblethian, St Hilary, Wick, St Athan and the broader rural Vale. Rural and agricultural projects, including barn conversions and rural exception housing, are a particular area of expertise.
Llantwit Major and the Heritage Coast
Llantwit Major and the Vale's Heritage Coast, stretching from Aberthaw to Ogmore-by-Sea, present a distinctive planning context. The Heritage Coast designation places restrictions on certain types of development to protect the landscape and coastal character. We are experienced in working within these constraints, designing proposals that respond sensitively to their coastal setting and have a strong chance of approval with Vale of Glamorgan Council.
Dinas Powys, Sully and the Eastern Vale
We work across Dinas Powys, Sully, Wenvoe, St Nicholas and the eastern Vale, areas popular with families and commuters who value the Vale's character while staying within easy reach of Cardiff. These are predominantly residential areas where extensions, loft conversions and renovations are among the most common projects we deliver.
Planning Permission in the Vale of Glamorgan: What You Need to Know
As Vale of Glamorgan architects with our studio in Barry, understanding the local planning framework is second nature to us. Here is a plain-language guide to the key considerations that affect most projects across the Vale.
Vale of Glamorgan Council as planning authority
Vale of Glamorgan Council is the local planning authority for the whole of the Vale. Its planning team assesses all applications against the Vale of Glamorgan Local Development Plan, which sets out policies for housing, commercial development, design quality and environmental protection. We have a longstanding working familiarity with the planning team and the policies they apply, which means we know how to present applications effectively and anticipate the issues that are likely to arise.
Conservation areas in the Vale
The Vale of Glamorgan has a significant number of designated conservation areas, including parts of Penarth, Cowbridge, Llantwit Major and several of the Vale's historic villages. Development within conservation areas is subject to stricter design requirements, and permitted development rights for some works are removed. Our experience in the Vale's conservation areas means we understand how to design proposals that respect local character while delivering what our clients need.
The Heritage Coast designation
The Vale of Glamorgan Heritage Coast covers a significant stretch of the South Wales coastline between Aberthaw and Ogmore. Development within and adjacent to the Heritage Coast is assessed against policies designed to protect its natural and landscape character. This affects both residential and commercial projects in towns and villages along the coast, including Llantwit Major, St Donats and Ogmore-by-Sea. We are experienced in working within Heritage Coast policies and can advise on what is likely to be acceptable.
Rural planning in the Vale
A large part of the Vale of Glamorgan is designated open countryside, where planning policy strictly limits new residential development. However, there are exceptions including barn conversions, rural exception sites and agricultural worker dwellings, and we have experience navigating these policies for rural clients. If you own a rural property or agricultural building in the Vale and are wondering what might be possible, an early feasibility conversation is the best place to start.
Common Questions About Working with Architects in the Vale of Glamorgan
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Look for a RIBA chartered practice or an architect registered with the Architects Registration Board, both markers of professional standards and ongoing accreditation. For projects in the Vale, it is also worth choosing Vale of Glamorgan architects with direct local experience and a track record of successful planning applications with Vale of Glamorgan Council. A practice based in the Vale, rather than one serving the area from Cardiff or further afield, will have the most relevant and up-to-date local knowledge.
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It depends on the size and type of extension and your property's specific circumstances. Many extensions across the Vale fall under permitted development rights and do not require a formal application. However, if your property is in a conservation area, is listed, sits within the Heritage Coast, or has had permitted development rights removed, you will likely need to apply. We can assess your property quickly and give you a clear answer.
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Fees depend on the scope and complexity of your project. For a residential extension, fees typically cover design, planning drawings and application support. We are transparent about costs from the outset and provide a clear fee proposal before you commit. As a Vale-based studio, we do not carry the overheads of a Cardiff city-centre practice, which means competitive fees without any compromise on quality or personal service.
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Vale of Glamorgan Council aims to determine most householder planning applications within 12 weeks of a valid submission. Applications in conservation areas, along the Heritage Coast or for more complex commercial projects may take longer. We give you a realistic timeline at the outset and keep you informed at every stage of the process.
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Yes. Alongside residential work, we deliver commercial architecture for businesses and organisations in the Vale of Glamorgan. Our commercial portfolio includes large-scale industrial and office projects, social housing schemes and community building remodels. Get in touch to discuss your commercial brief.
If your question is not here, please visit our dedicated residential FAQs or commercial FAQs pages for more information.