This question comes up almost always after a siren. The honest answer is that it is possible only in some cases, and that the limitation is almost never budgetary — it is engineering or legal.
What decides whether it can be done
- Loads. A mamad is a heavy concrete box. In an existing building the foundations and structure must be shown to carry it, and sometimes strengthened.
- Position. The mamad has to be reachable from inside the flat and meet the requirements for distance and openings.
- Development rights. Whether rights remain on the plot, and what the applicable plan allows.
- Shared building. An addition to a flat in a block touches the common property and requires consents. This is the stage where most projects stop — not the engineering.
Consents in a shared building
Building on common area or altering the facade requires the consent of the flat owners in the proportion set by law, according to the type of work. Projects that add a mamad to every flat have dedicated routes, but for a single flat the process is more complex and needs orderly handling with the neighbours and with the planning committee.
It is worth starting here: there is no point investing in detailed design before it is clear the consents can be obtained.
How long, and how disruptive
The construction itself is relatively short — a few weeks — but it is noisy, dirty and involves concrete work inside an occupied flat. Alternative accommodation or an isolated area has to be planned in advance, and coordinated with the neighbours.
When the answer is no — the alternatives
Where a compliant mamad is not possible, protective alternatives exist at various levels. They are not a substitute for a mamad and do not give the same level of protection, but they improve on an ordinary internal room. Choosing between them is a professional decision to be made with an engineer, not from an advertisement.
Where management and supervision come in
A project like this involves an engineer, an architect, the local committee, the neighbours and a contractor — five parties, any one of which can hold up the rest. The value of management is in the right order: consents first, then design, then execution. See management and supervision and building addition.
How we work
Bramy Group checks feasibility and consents before anyone pays for a detailed design. See building a safe room and building permit for a mamad. Get in touch.