Althea Peacock and Tanzeem Razak are founding partners and directors of LEMONpebble Architects and Urban Designers. Their award-winning Johannesburg-based practice has executed work in both the public and private sectors with projects ranging from university and other education buildings, housing projects, corporate and public buildings, social infrastructure, urban development frameworks and private homes at various scales and in multiple contexts.

Tanzeem graduated from the University of Witwatersrand with a BArch and an MArch (Magna Cumme Laude)in Human Settlements from the Katholieke Universiteit Leuven.

A passionate advocate for spatial justice, Tanzeem heads a team designing buildings within the post –apartheid context, including the recent completion of the new building for the School of Architecture and Planning at the University of Witwatersrand.

She is an Atlantic Senior Fellow for Racial Equity and has been a participant at the  International Architecture Exhibition of La Biennale Di Venezia 2023. Tanzeem has also been listed as one of the Africans Column 50 Influential African Women Architects of 2025 and is Honorary researcher at the School of Architecture at Wits.

Althea is also a graduate of the University of the Witwatersrand, and a PHD candidate. She leads a design team which explores themes of racially historicised spaces and other interdisciplinary themes which manifest in built infrastructures, affirming architecture as a political act. Her research interests encompass politics of archive and erased identities and how those manifest spatially.

In addition, Althea is a Journal of Architectural Education(JAE) fellow for the 2023-2024 cohort and advisory board member of the International Archive for Woman Architects (IAWA).

Both Tanzeem and Althea are long-time guest critics, at various universities for both undergrad and post-grad, and have written about some their work in several publications. These interactions feed back into their practice which promotes and is at the confluence of critical spatial thinking, space making and spatial justice.