Selasi was Born in Barking in 1990 to Ghanaian parents who came to London in their 20's. At the age of 5, Selasi moved to Ghana with her parents and attended primary school there. Her father passed away when she was 8 and so she was subsequently raised by her grandmother, and a family friend who helped support them while her mum went back to London to work. Both Selasi and her brother moved back to London when she was 10, completing primary school in London.

In her teens, Selasi wanted to be an athlete, sprinting was her thing but she was also interested in music. Her grandparents suggested Selasi consider a career in architecture as she was always a keen artist and had decided to take art at GCSE. Selasi was told by a careers advisor that to have a shot at a career in Architecture she would need to do maths A-level. So initially, she took Maths, Design Technology and sports science BTEC but Selasi decided to drop Maths at AS level and took I.T. instead. Her sixth form art teacher supported her in completing her UCAS applications for university, and she went on to Portsmouth university to study Architecture. (So her careers advisor was wrong!)

Selasi faced many hurdles at university, and ended up doing resits for every year of her undergraduate (Part 1) studies, which knocked her confidence. After completing her degree at Portsmouth University, Selasi struggled to find architectural work. Eventually she managed to join a student project and got an internship in Slovenia for 7 months. From Slovenia she was accepted into Manchester University to do her post graduate training, where she gave everything to her masters (Part 2). Her determination ensured she achieved her diploma, and she left Manchester determined to find a space for herself within the profession. 

In order to build a network for herself, Selasi stepped out of her comfort zone and went to industry events hosted by the Architects Journal and the RIBA, where among others, she met Elsie Owusu at an event hosted by Dian Small. Elsie gave her portfolio and C.V. tips and advice, and an opportunity to travel to Ghana to work with Elsie as a consultant. In 2018, Selasi got onto the RIBA London council after a campaign run by Elsie, with support from Baroness Lawrence, which enabled her to work on a project and complete her diploma (Part III).

Around this time the Architecture Foundation ran a series of events called True Colours which explored some radical themes and ideas. There she met Neba Sere who was also a trustee for another organisation at the time. Neba invited Selasi to another event she was hosting at Jestico + Whiles offices. There she got to meet other people of colour who she hadn't seen at other events. Significantly, Selasi met a few other black women with whom she got along with really well. They decided to keep in touch and made a WhatsApp group together. They each invited more people to the group and it grew to about 30 participants all sharing events and ideas. They decided to call it Black Females in Architecture (BFA) and the group grew to around 200. At the time you couldn't have more than 200 members in a group on WhatsApp so they decided to formalise things and make it a company. They put on their own events and increased BFA’s visibility via social media.

Selasi was still working for Elsie at the time for 1 day a week and Elsie took her along to the Mayors Round Table at the GLA building in Southwark. There she met Pooja Agrawal from Public Practice who encouraged her to apply for a role with them. Selasi then managed to get a job with PEACH -  People's Empowerment Alliance for Custom House where she learned a lot about more participatory approaches to housing and design. Off the back of this she got a full time role with BeFirst in Barking & Dagenham Council managing the small sites program, where she has helped grow the team from 4 people to 8.

In 2021 Selasi was nominated for an MBE for services to diversity in architecture. Although she wasn't sure she should accept it, she decided she would in order to use it to help others.