Architectural Services Award-winning design across London
Salstan is one of London's most trusted architectural practices, with over 1,000 projects completed and 130+ five-star Google reviews. We offer a full design and build service across London.
Trusted by over 1,000 London homeowners
Salstan is one of London's most trusted architectural practices, with over 1,000 projects completed and 130+ five-star Google reviews. From house extensions and loft conversions to new builds and full renovations, we deliver bespoke architectural services across every London borough. With two offices in Park Royal and Teddington, our Chartered team is never far from your project.Whether you're pla
Our team handles everything from initial design through to completion, all managed in-house.
Our Services
Everything you need, managed by one practice
House Extensions
From single-storey kitchen extensions to double-storey side and rear extensions.
Loft Conversions
Dormer, hip-to-gable and mansard loft conversions designed to maximise space.
New Builds
Complete architectural design for new-build residential projects from concept to completion.
Planning Applications
Full planning submissions with supporting documents for all project types.
Structural Engineering
In-house chartered structural engineers for calculations and construction drawings.
Construction
Our own build team delivers your project, so design intent is never lost in translation.
Understanding architectural services in London
Salstan is one of London's most trusted architectural practices, with over 1,000 projects completed and 130+ five-star Google reviews. From house extensions and loft conversions to new builds and full renovations, we deliver bespoke architectural services across every London borough. With two offices in Park Royal and Teddington, our Chartered team is never far from your project.Whether you're planning a single-storey rear extension, converting your loft into a master suite, or building a new home from the ground up, our architectural designers create solutions that balance your vision with practical requirements. We are a full-service, turnkey practice covering every stage of your project:Architectural drawings and design — bespoke plans tailored to your property, lifestyle, and budgetPlanning permission applications — expert guidance through council submissions with a 97%+ approval rateBuilding regulations — full technical drawings compliant with current Part L, Part B, and all relevant standardsStructural engineering — in-house structural calculations and designs, no need to hire separatelyConstruction and project management — end-to-end design and build, from concept to keys in handParty wall services — surveyor appointments and agreements handled for you Unlike many architectural firms that only cover design, Salstan manages the entire process, so you deal with one team from your first sketch to your finished build. That is all if you want, of course. We cater to any type of need our clients have.
Why choose Salstan for architectural services?
Our clients consistently rate us five stars. With over 130 verified Google reviews, we are one of the highest-rated architectural practices in London. Don't take our word for it, read what our clients say.
From compact flat conversions in Islington to large new builds in Richmond, we've delivered over 1,000 projects across London and the surrounding counties. This experience means we've seen every challenge and know how to solve it.
- Over 1,000 projects completed across London
- In-house architects, engineers and builders
- Fixed-fee pricing with no hidden costs
- 130+ five-star Google reviews from clients
Our Featured Works
How we deliver architectural services at Salstan
House ExtensionsFrom single-storey kitchen extensions to double-storey side and rear extensions, we design extensions that add space, value, and natural light to your home. Our team has completed hundreds of house extensions across London, navigating everything from conservation areas to restrictive permitted development rights.Loft ConversionsWe specialise in all loft conversion types; dormer, hip-to-gable, mansard, and L-shaped conversions and extensions. Our structural engineers work alongside our architects to ensure your new loft space is structurally sound and fully compliant. Loft conversions are one of our most popular architectural services in London.New Build DesignPlanning a self-build or new dwelling? We handle the complete new build architectural design, from site analysis and massing studies through to detailed construction drawings and contractor tendering.Basement ConversionsBasement projects require specialist knowledge of waterproofing, structural underpinning, and light well design. Our team has delivered basement conversions across London, adding significant living space and property value.Planning Permission & AppealsStruggling with a refused application? We have extensive experience with planning appeals, lawful development certificates, and complex applications including those in conservation areas, Green Belt, and metropolitan open land.Commercial ProjectsWe provide architectural services in London for commercial fit-outs, change-of-use applications, mixed-use developments, and HMO conversions.
Our process explained in six easy steps
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Accreditations & Education
Trusted Experience Across Architecture,
Engineering & Construction
Our team’s background combines architectural design, structural engineering and construction delivery.
Civil Engineering
Institution of Civil Engineers
Structural Engineering
The Institution of Structural Engineers
City University London
Academic excellence in the built environment
Loughborough University
Academic excellence in design & innovation
UCL
Academic excellence in architecture & engineering
Civil Engineering
Institution of Civil Engineers
Structural Engineering
The Institution of Structural Engineers
City University London
Academic excellence in the built environment
Loughborough University
Academic excellence in design & innovation
UCL
Academic excellence in architecture & engineering
Frequently Asked Questions
Working with a qualified architectural designer ensures your project meets building regulations, maximises your planning approval chances, and avoids costly mistakes during construction. For projects in London, where planning policies vary significantly by borough, professional architectural services are strongly recommended.
A typical residential project takes around 4 weeks from initial consultation to planning submission, depending on complexity. We can definitely work even faster on time-sensitive projects. Planning decisions usually take 8 weeks for householder applications. Technical drawings for building regulations take an additional 5–7 working days after planning approval.
Fees depend on the project scope. To give you some indicative figures, a simple rear extension design might cost £900 + VAT, while a full new build design could be £2,500 + VAT. We offer free initial consultations and provide fixed-fee quotes before any work begins, so there are no surprises.
Yes. We regularly help clients who have received planning refusals. We review the council’s reasons for refusal, redesign the scheme to address their concerns, and resubmit or lodge a formal planning appeal where appropriate.
Yes. We provide both planning drawings and full building regulations packages, including structural calculations. This means you don’t need to hire separate consultants — we handle everything in-house.
We cover all 33 London boroughs from our two offices in Park Royal and Teddington. We also work across Hertfordshire, Surrey, Essex, Kent, and other Home Counties — even as far as Brighton!
Yes. Salstan is a full-service, turnkey practice. We can manage your project from initial concept through to completed construction, including architecture, structural engineering, and building works — all under one roof.