SY Design Studio provides professional architectural design, planning drawing and Building Regulations services across Buckinghamshire. Led by architectural designer Salman Yousaf, we help homeowners and landlords with extensions, loft conversions, measured surveys, planning applications and detailed technical drawing packages.
Buckinghamshire has been served by a single unitary authority, Buckinghamshire Council, since April 2020, when the former county council and four district councils were merged. SY Design Studio provides architectural design and technical drawing services to homeowners and landlords across the county, working on suburban family houses, rural and semi-rural properties and, in places, listed or Green Belt sites.
Common projects include rear and side extensions, loft conversions and internal alterations, alongside occasional new-build and outbuilding projects on larger plots. Parts of Buckinghamshire, particularly towards the south of the county, are designated Green Belt or fall within the Chilterns National Landscape, formerly the Chilterns Area of Outstanding Natural Beauty, which can affect design and materials.
Every property and planning history is different, so we assess each site individually. We work with clients across Buckinghamshire, including areas such as Aylesbury, High Wycombe, Amersham, Chesham and Marlow.
People searching online for architects near me or architectural services near me in Buckinghamshire are often looking for support with planning drawings, Building Regulations packages, extensions or loft conversions. SY Design Studio provides these services from initial assessment through to technical drawings, working with clients across Buckinghamshire's towns and villages.
Led by architectural designer Salman Yousaf, the studio offers clear, practical and buildable design solutions for extensions, loft conversions and internal alterations, whether your property sits within the Chilterns National Landscape or a more straightforward suburban street. 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 Buckinghamshire are assessed by the Buckinghamshire Council. Depending on the property and proposal, a project may require householder planning permission, permitted development, prior approval and, in Green Belt or Chilterns National Landscape locations, a more restrictive planning approach reflecting national and local policy.
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 Buckinghamshire, particularly towards the south of the county, are designated Green Belt or fall within the Chilterns National Landscape, both of which can restrict development and require particular care with design and materials. Many towns also have historic centres protected by conservation area status. These designations vary across the county and must be checked for the individual address.
Rear and side extensions and loft conversions are common across Buckinghamshire's suburban and semi-rural housing, with Green Belt and Chilterns National Landscape status requiring careful checking on a site-by-site basis.
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 Buckinghamshire 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 Buckinghamshire itself, we cover areas across and around the borough, including High Wycombe, Amersham, Chesham, Marlow, Beaconsfield, Princes Risborough and Gerrards Cross. See our full areas covered guide for other locations.