Citeste articolul in romana → Poti amenaja mansarda fara autorizatie?
Often, yes. Since 25 August 2026, turning the attic of a family house into living space needs a notification to the city hall, not a building permit, if the roof keeps its overall shape and the structure doesn't need strengthening. Have a structural engineer check that first. Raising or reshaping the roof to gain height is a different job, and beyond small changes it needs a permit.
In short
Notification: converting an existing attic in a single-family house, stairs included, without changing the building's overall volume and only if no strengthening is needed (Law 169/2026, art. 294 alin. (2) lit. b) pct. (iii)).
Engineer first: if the floor or the roof needs strengthening, the notification route closes and you need a permit.
Usable floor area only counts where the clear height is at least 1.90 m (art. 584, definition of "mansardă").
The plot's floor-area limit (CUT) doesn't stop you: converting an existing attic is allowed even if it takes the house over the CUT (art. 252 lit. f)).
Roof windows keep the shape. Dormers change it. A small dormer may pass; a larger one, or raising the roof, means a permit, apart from the 0.50 m raise covered below.
Cost: roughly 750–1,500 lei/m² turnkey with standard finishes.
When is an attic conversion only a notification?
When the house is a single-family house, the roof keeps its overall volume, and the structure needs no strengthening. All three.
The code lists this under the notification route (art. 294 alin. (2) lit. b) pct. (iii)):
Converting an existing attic (pod) into a mansard (mansardă), in a single-family house.
Including the stairs (circulatii verticale) needed to reach it.
Without changing the overall volume of the building.
Only if the building doesn't need strengthening.
Outside protected zones and historic-monument protection zones (art. 294 alin. (2) lit. b)).
It doesn't apply to apartment buildings. The attic of a bloc is common property, and that's a different case.
Why an engineer comes first
"No strengthening needed" is the condition that decides the route, and only a structural engineer can confirm it.
Attic floors were rarely designed for living. Many were built to carry only maintenance and storage loads. A bedroom, a bathroom, furniture and people weigh more.
The roof structure has to be checked too: the condition of the timber, any rot or insect damage, and whether insulation and new finishes add load it can carry.
If strengthening is needed, the conversion falls outside the notification route and needs a building permit.
The engineer is part of the project anyway. A notification is filed with a simplified technical project prepared by architects and engineers (art. 295 alin. (4)). The responsibility for getting it right sits with them (art. 298 alin. (2)).
Have the attic checked before you plan rooms, order windows or price the work.
How much of your attic is really usable?
Only the part with at least 1.90 m of clear height counts as usable floor area. Measure where that line falls before you count on the space.
The code's definition of a mansard sets the clear height for usable areas at 1.90 m. Usable floor area is calculated from that (art. 584).
Under the slopes, the low strips are good for storage, not for living.
The converted mansard counts as a level of the house, and its floor area goes into the CUT calculation (art. 584).
That's not a problem for an existing attic. If converting it without changing its geometry takes the house over the CUT, no zonal plan (PUZ) is needed (art. 584), and the work is allowed even above the CUT (art. 252 lit. f)).
Roof windows, dormers or a higher roof?
Roof windows keep it a notification job. Dormers depend on their size. Raising the roof is limited to 0.50 m by notification.
Roof windows sit in the slope and don't change the roof's shape. They're the safe choice for the notification route.
Dormers (lucarne) add volume to the roof. A small dormer may be accepted as not changing the overall volume; a larger one changes the roof's shape. Ask the city hall before you design around one.
Changing the roof's shape to gain volume is what the code calls "mansardare" (art. 372). Adding a level this way needs a building permit, and only where the local planning rules allow it (art. 584).
Replacing the roof, even reshaped and raised by up to 0.50 m, is a notification, if the eaves and ridge stay within the maximum height in the local planning rules (art. 294 alin. (2) lit. b) pct. (ii)). That can be the difference between a low attic and a usable one.
Thinking of converting your attic and not sure it qualifies? Book a free 45-minute Office Hours session, show us photos of the attic and tell us what you'd like up there, and we'll go through whether it fits the notification route, what the engineer needs to check, and how much usable space you're likely to get.
Where does the stair go?
The stair often decides the whole layout, both upstairs and downstairs.
It takes space below: a straight stair and its landing take a strip of a room or a hallway on the floor underneath.
It needs headroom: where it arrives upstairs, the stair has to land under the high part of the roof, not under the slope.
A folding loft ladder isn't real access for bedrooms or a home office. It's for storage attics.
Plan the stair with the rooms, not after them. Moving it later means reopening the floor.
What about fire and escape?
A mansard is living space under a timber roof, so plan how you get out before you plan the finishes.
The stair is the escape route. Keep it clear and lead it to an exit.
Have at least one window you can actually get out of, in the rooms where people sleep.
Keep timber and insulation away from the chimney, with the fire protection the chimney needs where it passes through the attic.
Fit a smoke detector at the top of the stair.
What does an attic conversion cost and how long does it take?
Roughly 750–1,500 lei/m² turnkey with standard finishes, and 1,750–3,250 lei/m² with premium ones.
Bucharest, 2026:
Turnkey, standard finishes: roughly 750–1,500 lei/m².
Turnkey, premium finishes or complex design: roughly 1,750–3,250 lei/m².
Thermal insulation of the roof: roughly 300 lei/m², labour and materials.
Interior stair: roughly 3,000–8,700 lei in timber, 4,400–8,800 lei in metal, 3,950–15,000 lei for a spiral stair.
Roof windows: priced per window. Ask for the installed price, flashing included.
How long it takes:
The works: about two to three weeks for 50–70 m², three to four weeks for around 100 m².
The notification: about five weeks from filing. The city hall has 15 working days to respond, and you can start 15 calendar days later (art. 296 alin. (1) and (6)).
How do you convert an attic with a notification, step by step?
Six steps. The engineer's check comes before everything else.
Have a structural engineer check the attic floor and the roof structure. If strengthening is needed, plan for a permit instead.
Measure the usable area: where the 1.90 m line falls, where the stair can land, where the windows can go.
Get the simplified technical project: architecture, structure and installations (art. 295 alin. (4)).
File the notification with the city hall: the form, the project and the fees (art. 295 alin. (4) and (5)).
Wait 15 working days. If the city hall doesn't answer, the notification counts as approved, and you can start 15 calendar days later (art. 296 alin. (1) and (6)). The notification is valid for three years (art. 296 alin. (5)).
Build, then sign the completion report with the builder and a city hall representative, and register it in the National Register of Constructions (art. 298 alin. (6)).
Converting an attic without the notification can mean a fine of 5,000–50,000 lei (art. 357 alin. (4) lit. a)). Doing works that needed a permit without one, such as strengthening the structure or changing the roof's shape, can mean 50,000–1,000,000 lei (art. 357 alin. (4) lit. b)).
Find out what your attic can become before you plan the rooms
In a free, 45-minute Office Hours call, an architect looks at your attic with you: whether it fits the notification route, what the engineer needs to check, where the stair and windows can go, and how much usable space you'll really get.
Bring: photos of the attic (the floor, the roof timbers, the highest and lowest points), rough measurements, and a floor plan of the house if you have one.
No pitch, no obligation. Pick a time below; it shows in your local time.
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