Ty Bronna is a large detached house on St Fagan's Road in the Cardiff suburb of Fairwater.

It was designed by C. F. A. Voysey for Hastings Watson, a timber merchant, and built between 1903 and 1906.

[6] The RCAHMW report on Ty Bronna praises Voysey as having "...exploited the slope by placing the entrance at the short west end so that he could open up a five-arched veranda almost the full width of the south front which faced the view over the valley of the River Ely".

The house is three storeys in height, capped by a hipped roof, battered buttresses rise from the ground to the eaves.

[7][3] Since 2001, the Church Army has provided accommodation at Ty Bronna for 16–21 year-olds who find themselves without a home and to support them towards independent living.