Adding a floor or unit to an existing property in Israel
Adding a floor or unit to an existing property in Israel
Not every value-creation strategy requires a new building. Many owners can increase the value or income of an existing property by adding a floor, creating a separate unit, splitting a large apartment or extending into unused rights. Each route depends on planning rights, permits and, in shared buildings, the consent of neighbours. This guide explains the main options and helps owners judge when such a project is likely to be worthwhile.
Using unused building rights
The first question is whether the plan leaves unused rights on the property. If the building has not used all its permitted area, an extension or additional floor may be possible with a permit.
In a condominium, unused rights and the roof are often common property. Using them usually requires the consent of other owners according to the building's registered bylaws and the law.
Splitting an apartment
Dividing a large apartment into two smaller units can increase rental income or saleability. It requires a permit, and the plan must allow the additional unit. Some municipalities encourage it in certain areas while others restrict it.
Splitting without a permit creates legal exposure and may affect financing and a future sale. Owners should confirm feasibility with an architect before investing.
Planning – the plan must permit an extra unit
Permit – required for the division and any works
Services – separate entrances, meters and utilities
Adding a floor or extension
Adding a floor or extension may use existing rights, a relief from the plan or a new plan. In private homes the process is simpler than in shared buildings, where structural questions and neighbours' consent become central.
A structural engineer must confirm that the structure can carry the addition. Fees, levies and any betterment levy should be included in the budget.
When it pays
An addition is worthwhile when the value or income it creates exceeds its full cost, including design, permits, construction, levies and the owner's time. In areas with strong demand for smaller units or additional space, the case is often stronger.
Where the building has larger potential, for example for renewal, a small addition may reduce future options. An appraiser can compare the paths.
Demand – is there a market for the added space
Cost – full budget including levies and fees
Alternatives – would renewal or a sale capture more value
Practical steps and support
Start with a review of the plan and the building file, then consult an architect and, in shared buildings, a lawyer about consents. Obtain the permit before starting work, and keep records of all costs, which may matter for tax on a future sale.
Elkayam Group works in development and urban renewal and can help owners assess whether a small addition or a larger project is the better route.
Frequently asked questions – adding units to a property
Do I need my neighbours' consent to build on the roof
In most condominiums the roof and unused rights are common property, so consent is usually required. The building's bylaws and a lawyer's advice will confirm the position.
Can I rent out a split unit legally
Yes, if the split was carried out with a permit and the plan allows the extra unit. An unauthorised split can create enforcement and insurance problems.
Will adding a unit trigger a betterment levy
It may, if a relief or plan change increased the property's value. Some exemptions exist, so the question should be checked with an appraiser or lawyer.
Why Elkayam Group
The group works in development, urban renewal, combination deals and complex deals, works with backing companies, brings partners and provides guarantees for clients. The team works in Hebrew, English and French.
Contact: +972-53-658-4252 · support@kobielkayamrealestateltd.com · Rival St 37, Tel Aviv