SY Design Studio provides professional architectural design, planning drawing and Building Regulations services in Brentford. Led by architectural designer Salman Yousaf, we help homeowners, landlords and small developers with extensions, loft conversions, measured surveys, planning applications and detailed technical drawing packages.
Brentford is a fast-changing riverside neighbourhood within the London Borough of Hounslow, combining Victorian terraces around the historic High Street with newer waterside developments near Kew Bridge and Brentford Lock. SY Design Studio provides architectural design and technical drawing services to homeowners, landlords and small developers across Brentford.
Common projects include rear and side extensions to Victorian terraces, loft conversions and internal alterations, alongside occasional flat conversions near the town centre. Parts of Brentford sit within conservation areas around the historic High Street and waterside, where design and materials receive additional scrutiny.
Every property and planning history is different, so we assess each site individually. We cover Brentford, Brentford High Street, Kew Bridge, Brentford Lock, Boston Manor and Clayponds, and the surrounding Hounslow area.
People searching online for architects near me or architectural services near me in Brentford often need help with planning drawings, Building Regulations packages, extensions or loft conversions for a Victorian terrace. SY Design Studio provides these services from initial assessment through to technical drawings, working with clients across Brentford and neighbouring Isleworth and Hounslow.
Led by architectural designer Salman Yousaf, the studio offers clear, practical and buildable design solutions for extensions, loft conversions and internal alterations. We are happy to discuss your project before you commit to anything.

Design and planning drawing packages for householder applications, full planning applications and planning feasibility advice.
Learn More
Detailed technical drawings and construction information to support Building Control approval and construction.
Learn More
Rear, side, wraparound and two-storey extension designs that improve space, daylight and everyday use.
Learn More
Dormer, hip-to-gable, rooflight and mansard design support, subject to the property and relevant planning controls.
Learn More
Accurate measured surveys and existing-property drawings to support design, planning and technical work.
Learn More
Prior approval applications for larger single-storey rear extensions and other qualifying permitted development.
Learn More
Certificates confirming that existing or proposed works are lawful, for permitted development or established use.
Learn More
High-quality external and internal visuals to help clients understand a proposed design before construction.
Learn More
Conversion of houses into flats or maisonettes, including layout design and Building Regulations packages.
Learn More
Internal structural alterations coordinated with a suitably qualified structural engineer where required.
Learn More
Shop alterations, change-of-use applications, subdivisions and Building Regulations packages for commercial premises.
Learn MorePlanning applications in Brentford are assessed by the London Borough of Hounslow. Depending on the property and proposal, a project may require householder planning permission, permitted development where a property is not affected by conservation-area restrictions, and change-of-use applications for flat conversions.
The correct route depends on the property type, site location, proposed dimensions, planning history, previous planning conditions, conservation-area or listed-building status, permitted development restrictions, Article 4 Directions, use class and local planning policy. We do not guarantee approval and have no special relationship with any local planning authority — every application is assessed on its own facts.
Parts of Brentford, particularly around the historic High Street and waterside, sit within conservation areas where design quality and materials receive additional scrutiny. Some properties may also be affected by flood risk given the area's riverside location. These designations must be checked for the individual address.
Rear and side extensions and loft conversions are common on Brentford's Victorian terraces, with additional design care needed near the historic High Street and waterside conservation areas.
Planning permission and Building Regulations are separate processes. Gaining planning permission, or confirming permitted development, does not remove the need for a compliant technical drawing package before and during construction. Depending on the project, this may include:
Not every project needs every item — the exact package depends on the project, and we confirm the scope once the design is settled.
We follow the same clear process for every Brentford project, from initial consultation through to construction support.
Discuss the property, proposed work, required services and likely next steps.
Review the property type, planning history and potential planning constraints.
Carry out a measured survey and prepare accurate existing drawings where included.
Develop the proposed plans and external design with the client.
Prepare the required drawings and supporting documents and submit the application where included within the agreed service.
Prepare the technical drawing package and coordinate structural and specialist information where required.
Provide clarifications, revisions or further design services where included or separately agreed.
Alongside Brentford itself, we cover areas across and around the borough, including Brentford High Street, Kew Bridge, Brentford Lock, Boston Manor, Clayponds, Syon Park area and The Ham. See our full areas covered guide for other locations.