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Not every internal repair requires a building permit, but not every partition can be moved freely. The answer depends on structure, common parts, installations, loads and designated use. If the purchase works only after a particular alteration, ask an architect to check it before the deposit rather than after completion.
ZUT's general rule requires construction work to be authorised, while Article 151 lists exemptions. The statutory definition of “current repair” allows internal alterations only within defined limits: no effect on the structure or structural walls, designated use or loads. ZUT, Articles 148 and 151 and §5(43), Bulgarian text
Sources were checked on 21 August 2026. No online guide can identify the structural role of a particular wall. Use a Bulgarian architect and, where structure is uncertain, a structural engineer.
Start with the approved plan
A marketing plan and a survey of the present condition may not show what was approved. Obtain the approved architectural plan and compare it with the cadastral scheme, commissioning papers and physical apartment. An undocumented past change is a separate risk from the new change you want.
The architect should review walls, openings, shafts, risers, wet areas, façade and common parts. “Non-load-bearing” does not automatically mean “no procedure”. Work can affect building services, a common part, fire design or the approved layout without carrying a vertical load.
When the question becomes more complex
An opening in a structural wall, work to a slab, altered loading or interference with common systems needs technical design and the applicable approval route. Moving a kitchen or bathroom is not assessed only by pipe length. The design, vertical connections, ventilation, waterproofing and neighbours' rights matter.
A change of use follows a separate regime. Even without building work, Article 147a may require a permit. ZUT, Article 147a Enclosing a balcony, changing the façade or absorbing common space is not ordinary decoration either.
Is condominium consent required?
Not for every internal alteration. Article 185 applies different conditions depending on common parts, other owners' rights, loads and use. ZUT, Article 185 “All neighbours must consent” is as unreliable as “you may do anything inside your apartment”.
The architect defines the intervention; the lawyer and municipality confirm the decisions and consents. If the plan depends on consent not yet given, price that uncertainty into the purchase.
Protect the purchase
Commission a short feasibility review before signing the preliminary contract. It should identify whether the desired layout appears technically feasible, the likely procedure and remaining unknowns. Confirm the route with the competent municipality where needed.
If the new layout is essential, negotiate an exit condition for an adverse professional or municipal response. Do not pay a premium for the “potential” of a wall that nobody qualified has checked.
Frequently asked questions
Can I remove a non-load-bearing wall without a permit?
That label alone is not enough. The approved design, structure, services, use and ZUT conditions must be reviewed.
Does every renovation need neighbours' consent?
No. The answer depends on common parts, other owners' rights, loads and designated use.
Does commissioning prove the present layout is lawful?
Not necessarily. A later undocumented change may have been made. Compare the approved plan with the physical condition.
Verified primary sources
- Ministry of Regional Development: Spatial Development Act, Bulgarian
- Ministry guidance reproducing the current-repair definition, Bulgarian
Also review the building's technical passport where substantial past work is suspected.
View Pikadili and check the proposed layout before reserving a unit.