Overview of the Report
The document is a news‑feature article published by the Landeshauptstadt Stuttgart, the city’s official administration. It presents the latest statistics on housing construction and permits in Stuttgart for the year 2025, offering insight into trends that affect the city’s housing market and its sustainability challenges.
Stabilisation of New Housing Completion
In 2025, Stuttgart completed 661 new dwellings, a sharp decline from 1 321 units finished in 2024. Despite the drop in completions, the net increase in housing stock amounted to 558 apartments, indicating that the overall supply is beginning to stabilise after several years of contraction.
Surge in Building Permits
The most notable development is the rise in building permits. Authorities granted 1 330 permits for new apartments in 2025, representing a 38 % increase over the 961 permits issued in 2024. This surge follows a historic low of 961 permits and remains below the pre‑crisis level of 1 835 permits recorded in 2021, but it signals renewed confidence among developers.
Growing Construction Backlog
The increase in permits has created a substantial “construction backlog”. By the end of 2025, 4 067 apartments were approved but not yet finished, up from 3 668 in 2024. Of these, 2 324 were under construction and 1 356 had reached the shell stage, suggesting that a significant number of units will become available in the coming years.
Lengthening Project Timelines
The average duration from permit issuance to completion lengthened to 29 months for the 2025 cohort, compared with 27 months in 2023 and 23 months in 2020. Longer timelines reflect tighter financing conditions and regulatory pressures, but they also imply that the current permit surge will translate into housing supply over an extended period.
Geographic Distribution of New Units
The majority of newly finished apartments were built in the northern districts, with 197 units completed there. A notable conversion project in the former Bürgerhospital produced 136 apartments, complemented by public‑sector support, a childcare centre, a family hub and a community garden.
Role of Renovations and Extensions
Out of the 363 new apartments delivered by new builds, an additional 298 units resulted from conversion, extension or refurbishment of existing buildings. Consequently, roughly 45 % of all finished housing in 2025 derived from measures on existing structures, highlighting the growing importance of densification and adaptive reuse for sustainable urban growth.
Shifts in Unit Size and Building Types
Average floor area of new apartments in multi‑family buildings rose to 86 m², surpassing the ten‑year average of 79 m². Nonetheless, smaller units dominate: 44 % of 2025 completions were one‑ or two‑room apartments, whereas larger units (five rooms or more) accounted for only 15 % of new builds, though they represent 23 % of the overall city stock.
Implications for Sustainable Housing
The data suggest that Stuttgart’s housing market is moving from a period of decline toward a modest recovery, driven largely by increased permitting and a focus on retrofitting existing stock. While longer construction times and a persistent backlog temper immediate impacts, the shift toward adaptive reuse and larger average floor areas aligns with broader European goals of reducing embodied carbon and promoting efficient land use.