• The stuff of life makes us hum. Ullmayer Sylvester Architects are a design-led architectural studio. We incorporated in 2005 following our participation in a collaborative custombuild housing project in North London. Since then we have created fine, handcrafted projects, which have been widely published and which won an accolade of national and international awards including two RIBA Awards, a Wood Award and Hackney Design Awards.

    As a studio question and re-invent typologies with enthusiasm and a sense of optimism. We never see spaces in isolation, but as part of a larger collection of rooms and spaces and set within a wider context. As such have have developed an ability to make the smallest spaces feel generous and special and make them work at many levels .

    As a practice we engage in domestic, custombuild but also niche urban and community context to make high quality, beautiful projects and environments. We work closely with our consultants and with our contractors through every step of the design and construction process to deliver both cost effective and elegant designs. Our directors develop each project uniquely around our client and their family, they are at the heart of each project at all times.

  • Silvia Ullmayer


    Silvia studied Design and Architecture in Germany and the UK and was recommended for the RIBA Silver Medal.  She was a tutor at the CASS in diploma unit 5 from 2005 to 2013 and an external examiner at Cambridge.
    Silvia has worked for Caruso St John, Florian Beigel, Wilkinson Eyre and with Allies and Morrison and has been a member of the RIBA housing group.
    Dipl. Des. (Produkt-design) Distinction, Dip Arch,Riba, Arb

    Florian Beigel – ARU

    ➔ Caruso St John Architects

  • Allan Sylvester


    Studied at the university of north london (now the CASS) and the Bartlett (UCL).
    Allan worked for Tim Saddler, Michael Mallinson and Simon Sturgis Associates prior to setting up practice. More recently he developed a passion for drone photography and is about to become fully trained drone pilot. He taught at Oxford Brookes and now teaches at Westminster.
    Dip Arch, Arb

    ➔ The Bartlett

    ➔ Westminster Architecture and the Built Environment

  • Agnes Elvin

    Architectural Assistant

    Agnes has a fantastic creative eye. She works with great precision and dedication. In addition to being a talented architectural assistant she is an amazing photographer and adds high quality Scandinavian design ability.

    BA (hons)

  • Ivona Geogieva



  • former key collaborators & employees

    Ludovica Beltrami

    Toby Hart

    Ro Spankie

    David Caines

    James Maidment

  • Selection of awards

    AJ Retrofit 2023 | highly commended

    2 x RIBA awards 

    NLA Don’t Move Improve! 2020 | winner environmental leadership prize

    Hackney Design Awards 2020 | winner (sustainability and climate change)

    Whatcotts Yard Collaborative Terrace ‘In Between’ AJ first building award│ winner,  RIBA awards  │ winner,  hackney design awards  │ winner, future house london  │ winner,  bauwelt prize category housing │winner

    Iconic Awards 2020 (Rat für Formgebung) | winner (selection)

    2020 Real Estate and Property Awards | winner (best pavilion & small housing architecture firm West Europe)

    AJ Architecture Awards 2019 | winner (project under 250K)

    Timber Trade Awards 2019 | winner (private residential timber construction)

    Don’t move improve 2018 │ shortlisted

    Don’t move improve 2018 │ shortlisted

    Don’t move improve 2012 │shortlisted

    BDIA 2008 │ würdigung

    Summerhouse Hackney design awards │ winner,  wood awards │ winner, RIBA awards │ shortlisted