IN Brief:
- Tustin Estate Phase 2 received Building Safety Regulator approval with four outstanding requirements on 18 October 2026.
- The 295-home Southwark phase follows a 34-week review of nearly 900 regulatory documents prepared by Bouygues and its advisers.
- Approved elements may progress subject to statutory procedures, but work covered by a requirement must await its resolution.
Bouygues UK has secured Building Safety Regulator approval with requirements for Phase 2 of the Tustin Estate regeneration in Southwark, involving 295 homes in four buildings. The decision was confirmed on 18 October 2026 after an extended technical assessment and leaves four requirements to be addressed before work covered by them may begin. Bouygues can advance the approved elements of the next phase, but the regulatory result should not be confused with unconditional clearance for every construction activity.
The eastern part of the estate will accommodate maisonettes and one, two and three-bedroom flats, with earlier design information specifying 151 affordable homes and 144 private tenure homes. Bouygues acts as developer and contractor alongside Southwark Council. dRMM Studio Architects led the design, with residents involved in the planning and design process; their engagement also informed the treatment of the buildings and public realm adjoining the future central park.
Gateway 2 is a building control decision for higher-risk building work, distinct from the project’s planning consent. Government guidance states that an approval with requirements permits work on the approved parts of the application, but prohibits starting any part subject to an outstanding requirement until the regulator is satisfied it has been met. Bouygues describes the four requirements as minor, without publishing the full terms of each one. The extent of permissible early work must therefore follow the actual approval notice rather than a general assumption that the entire phase is ready to start.
Bouygues submitted nearly 900 regulatory documents after a detailed design programme from July to December 2025. The application was validated in late January 2026, and the subsequent assessment took 34 weeks. More than 28 specialist design and engineering partners contributed, with the contractor reporting that it resolved most requests for further information within 12 weeks. The lengthy review reflects the documentation and coordination demanded of the next four building blocks rather than a fresh planning application.
The regulator’s assessment considers how the proposed construction will comply with building regulations, including structural and fire safety requirements and the competence and management arrangements of the delivery team. Architectural information must align with the designs and specifications for escape routes, external walls, structural interfaces and services where these affect compliance. The client and its appointed project team also need a means of recording and controlling changes after approval, so evidence prepared for Gateway 2 must remain useful during procurement and construction.
Bouygues says it developed updated digital templates and document management processes for the submission. Across hundreds of technical records, version control and timely responses to regulator questions help keep individual design packages consistent with the application being reviewed. A façade interface revised by one consultant, for example, may affect other coordinated details and fire precautions. The company has not quantified an isolated time saving from its digital approach, so the tools are best described as part of its coordination method rather than a proven acceleration measure.
Tustin is planned as a four-phase redevelopment delivering nearly 700 homes, refurbished council properties, a replacement primary school, new public open space and more than 1,800 square metres of commercial accommodation. The scheme began on site in autumn 2022, and Bouygues currently describes an overall programme extending to 2030. Phase 1 has been completed and handed over to residents, so the Gateway 2 outcome marks progress on an existing delivery programme rather than approval for a newly conceived development.
Four buildings are proposed along the eastern edge of the estate, including homes facing the planned park and Ilderton Road. Different brick finishes draw on the locality’s existing buildings and industrial history, while the mix of maisonettes and apartments introduces varied ground-floor and residential access arrangements. The works must also be sequenced within an occupied regeneration site, as residents have already moved into Phase 1 and further parts of the overall estate remain in use.
Southwark’s February 2026 cabinet decision dealt separately with procurement. It agreed to enter a Phase 2 main works contract with BY Development Limited at an estimated £164.5m and recorded separate prices and a break provision affecting certain blocks. That was an earlier commercial decision, not a contract awarded following October’s Gateway 2 announcement. The final extent and scheduling of works must be read alongside the council’s contractual arrangements and the regulator’s approval conditions.
The four-phase Tustin programme is expected to deliver nearly 700 new homes, refurbished council properties, a replacement primary school, a central park and more than 1,800 square metres of commercial space by 2030. Phase 1 has already been handed over. Bouygues has not published a definite Phase 2 construction start date in its October update; approved work can now be planned subject to the four requirements, applicable commencement notices, change controls and eventual building control completion approval before occupation.
