Our local architects at Trimble Architects offer a range of architectural services across Twickenham and South London. Our RIBA chartered architects ensure that every construction site is safe for our workers, the public and future users.
We follow strict building regulations during all our projects, so we can complete your project in the safest and most efficient way. Our architects have a deep understanding of the local area and work hard to ensure that every project meets industry standards.
We work closely with our interior design team to make sure we can create your desired outcome. We can provide each client with builders and designers that we highly recommend. For more information on our services, please read on or send us an email.
All Our Services
During all our construction projects, we use the building regulations so we can complete your plans in the safest and most efficient way. Our RIBA chartered architects want to ensure the construction site is safe for our workers, the public and future users.
Here at Trimble Architects, based in Twickenham, in south-west London, and we provide our great services to the surrounding local area, such as Richmond. We work closely with the interior design team to make sure we create your desired outcome. We can provide each client with builders and designers that we highly recommend. For more information on our services, please search through our website.
Planning Permission
Larger building projects often need planning permission due to boundary issues and landowners. Our extensive experience in the industry means we can provide expert advice and guidance to all our clients.
Planning permission is required for listed buildings, environmental conservation, and other sectors.
As a registered RIBA company, we handle all the complexities of obtaining planning permission, removing the stress from your shoulders. Additionally, we provide 3D outline plans that help you fully visualise your ideas.
Design Planning
The design planning stage is a crucial part of the entire architectural process. We aim to make your innovative ideas come to life, and doing this involves looking at the existing architecture of your property.
We assess the condition, shape and structure of the building to ensure your idea works with the property type.
We can help draw your designs so you can have a better perspective of what the end result will look like. From the groundwork to interior design, we will make sure that every detail is dealt with. Whether you want a new kitchen floor, a loft conversion, or extensions, our services can fit the bill.
Project Management
We value project management and consistently plan and execute your project ideas as smoothly as possible. We can create tailored schedules and work plans for all our team members to help organise the project and ensure productivity.
Our managing directors handle your project as efficiently as possible and keep an eye on the budgets spent on each step of the project. If we come across any obstacles during any of our processes, we will use our expert skills to re-plan the project or find alternative options to work around them.
We always make sure our best architects are on the ball when it comes to managing your project.
Architectural Drawings
Architectural drawings are a technical blueprint of your project to see how it's going to look and what you'll be able to achieve with the space.
To create these detailed drawings, our architects will take measurements within the existing building so that the drawings will be as accurate as possible.
Our London architects at Trimble Architects have years of experience in architectural drawings and can sketch your plans with exceptional attention to detail.
We want to make sure everything for your new home or building is planned to perfection before the project begins. By creating detailed drawings, we can reduce the risk of encountering problems down the line.
Party Wall Agreements
Having a Party Wall Agreement helps avoid disputes between you and your neighbour when you are undertaking a new build project or extension. We can negotiate, advise you and create Party Wall Agreements using our many years in the industry.
Disputes can be caused if your project requires building onto your neighbour's side of the land since they can take legal action if they do not agree to the work.
This mostly happens with extensions or other larger projects that cross set boundaries. If there happens to be a wall between the two properties and one of you needs to knock it down, you must seek your neighbour's permission beforehand. Having this permission means that you don't face any legal consequences down the line.
Residential Architects
Our residential architects specialise in designing and planning homes that are functional, aesthetically pleasing, and tailored to the needs of homeowners.
We work on projects ranging from new builds to extensions and remodelling, ensuring that every design integrates seamlessly with the surrounding environment.
We consider factors like space optimisation, energy efficiency, and building regulations, while also focusing on the architectural style and the client’s personal preferences.
Residential architects guide clients through the design process, from initial concept to detailed plans, and collaborate with contractors to bring their vision to life.
RESIDENTIAL ARCHITECTS
Trimble Architects is a design-led professional architecture firm based in South London. We have years of experience in designing and completing various projects to meet any client's requirements and specifications.
Our talented, skilled architects use their deep understanding of the residential architecture industry, and the background knowledge they have built up over the years, to work on projects of various sizes and scales.
From large urban planning projects to modern new builds, multi-story schemes, and mixed-use developments, we can do it all. Our scope of work is tailored to you.
Though we specialise in developing larger projects and complexes, we also have a knack for much smaller designs, including renovations, house extensions and loft conversions.
Our team of award-winning residential architects use their creativity to design concepts that factor in all the existing variables, such as the surrounding buildings and ecosystems near your local area or postcode. Doing this allows us to factor in your aspirations and make sure they are included during our design phase.
Our services also include showcasing visualisations and using CGI technology such as Houzz to create an almost exact visual representation of the concept art for your project. By using 3D models and CGI technology in this way, our clients can see the vision we have for their property before construction begins.
Our approach to residential architecture gives our clients the chance to discuss their opinions every step of the way - from the initial design through to the final touches. We always make the time for our clients to have a say when it comes to their site.

What can I expect from a residential architect?
An RIBA architect from us will first ask as many questions as possible about the project you want to build and achieve. Our local architects need to have as deep of an understanding as possible to bring your vision to life, especially for more modern plans, sites and builds.
Our RIBA professionals will work with you closely to develop your project brief down to the specific details and then finalise the budget to suit the scope of the job.
Architects from Trimble Architects strive to guide you through a range of ideas and methods so you can see your project from different angles. From drafting up the initial design ideas to seeing the project come to life, we make sure every detail is accounted for and factored in. We try our best to stick to your budget so you don't have to be weighed down by extra costs or fees.
Both you and your RIBA architect must agree on all terms of your project before they begin their design process. Our London architects develop design plans in ways that will increase the value of your new building or extension as an asset for any future investments.
What is the cost of building a new house?
If you're considering building a new house from scratch, often referred to as a 'self-build', it's important to understand the costs involved.
Nowadays, for buildings in the London area, costs typically range from £2,500 to £3,500 per square metre. This variation is due to different factors like design complexity, material quality, and site conditions.
While this may seem like a broad range, it allows for flexibility depending on your needs and preferences. Once the basic requirements and desires for your project are finalised, Trimble Architects's architects can narrow down the options and provide a detailed plan of action.
What is the cost of building an extension?
Building an extension in the UK costs between £2,500 and £3,000 per square metre on average. This applies to front, rear, and side extensions. If you’re considering roof extensions or loft conversions, the budget is significantly higher, ranging from £40,000 to £60,000 - including dormer windows.
Mansard roof extensions are even more expensive, typically costing between £80,000 and £120,000. These figures are averages based on our completed projects, particularly in and around London. Many of these are rough costs used as a basis in the early planning and development stages, so the price can fluctuate at any point.
To get a more precise estimation, close to the actual cost of your building project, Trimble Architects will appoint a price professional.
Several factors influence the total cost of your project. These include the level of structural support required, the complexity of the design, the choices of fittings and fixtures, the creation of extra spaces, and the materials and finishes used.
Each of these elements contributes to the final price, making it essential to plan carefully to meet your budget.
What is pre-planning, and will it be required for my project?
Pre-planning, or pre-application planning advice, is a vital step in ensuring the success of any architectural project.
Once the initial design scheme for the project is completed, we review it thoroughly and consult with you to ensure everyone is happy to proceed. At this stage, we will advise you on whether obtaining pre-planning is necessary.
Pre-planning is needed when your project has specific requirements that need to be addressed. This process involves consulting with the local authority to get their input on your project.
If our architects think that pre-planning is essential, we will handle the application process for you. This includes preparing all the necessary documents and ensuring that all requirements are met.
How long will it take to obtain planning permission for my project?
The council usually have eight weeks to think through and consider your application and either approve it or not. However, they only generally look at your application in the final days of the consideration period. The council considers the entire application when it's submitted and then offers a final decision.
We particularly recommend waiting ten weeks minimum for your results to come through. However, depending on the scope of work, it can sometimes take slightly longer.
If you are looking for award-winning, London Architects near you, we're your best bet. Our RIBA chartered architects constantly ensure that your site is safe for workers, the public and any future visitors.
If you are looking for award-winning, Local London Architects near me, we offer a complete range of Twickenham and south London architectural services. Our RIBA chartered architects want to ensure the construction site is safe for our workers, the public and future users.
Architects Near Me
Are you looking for architects near me? If you are looking for RIBA local architect services in Twickenham and the surrounding areas. Trimble Architects works with clients throughout London and the surrounding areas, including:
Other Information
Trimble Architects is based in Twickenham and offers high-quality services completed by our RIBA chartered architects. If you would like more information on our full range of listed services, please search through our website, or contact us by phone or email.
Also, if you would like a free consultation, by one of our professional ARB architects, please call us today! Our company are flexible, so let us know a day and time you are available, and we will do our best to work around you as much as we can.
Trimble Architects
Based in Twickenham
South West London

