§02 Local
Renovating in Delft
The housing stock is heavily rental-oriented: approximately 42% is owned by housing corporations, 20% is private rental and 37% is owner-occupied. Approximately 21% of the housing stock dates from before 1945, including the monumental canal houses in the protected city center, which has been designated a nationally protected cityscape. The presence of TU Delft creates high demand for student rooms and compact rental homes, which means the average WOZ value (approximately 352,000 euros in 2025) is relatively low compared with surrounding municipalities. This determines which renovations are common in Delft and how best to set up an application.
Common renovations in Delft
Whether it concerns a dormer, a extension, a roof extension or the converting the loft: for each type we supply a permit-ready construction drawing that suits the homes in Delft and the requirements of the municipality. Are you unsure whether your renovation is permit-required? In our knowledge base read what is permit-free.
Aesthetic review in Delft
The Welstandsnota Delft 2025 distinguishes three aesthetic review levels: special (for the historic city centre and protected areas), general (for regular residential areas) and light-touch (for business parks with little impact on the public realm). The Advisory Committee for Environmental Quality meets fortnightly on Thursdays at the city hall; meetings are open to the public. Anyone applying for a building permit for a development in a special or general aesthetic review area must take into account assessment of urban coherence, facade appearance and appropriate detailing, and material and colour use. We check those requirements upfront, so that 90% of our designs pass the aesthetic review first time.
How your application works in Delft
Your application in Delft follows fixed steps: a free intake, the design with an aesthetic-review check upfront, the structural calculation by our own structural engineer where needed, and then we submit the environmental permit to the municipality of Delft. We do the drawing work digitally and remotely, and you follow every step in your own online file, from quote to completion. Whether you live in Delft or elsewhere in the Haaglanden region, you pay the same fixed price upfront.