Renovating an apartment is not renovating a small house. People find this out around week two, usually in a conversation with a building manager about elevator padding.
The work itself is similar enough. Same trades, same materials, same finish standards. What’s different is everything wrapped around the work: who has to approve it, what you’re actually allowed to touch, when crews can make noise, how material gets to the eleventh floor, and who’s liable when the unit below yours reports a stain on the ceiling. Those constraints shape the project more than any design decision, which is why apartment renovation specialists exist as a distinct category from general remodelers. The building is a second client, and it has opinions.
What You Own Is Smaller Than You Think
This is the concept that trips up almost everyone, and it’s worth getting straight before you plan anything.
The boundary is usually the surface
In most condominium arrangements, what you own is roughly the airspace inside your unit and the finishes on it. The structural slab, the building envelope, the load-bearing walls, and typically the pipes and wiring inside common walls belong to the association. So does the waterproof membrane under your bathroom floor, in many buildings.
That means the drywall is yours and the stud wall may not be. The floor covering is yours and the slab underneath is not. Anything that crosses that boundary stops being a decorating choice and becomes a governance question.
Why it matters most in wet areas and kitchens
Waterproofing and plumbing are where the boundary gets tested hardest, because those are the systems that fail into somebody else’s home. Move a shower drain and you’re likely into common property. Add a second bathroom and you’re into the building’s stack capacity. Relocate a kitchen and you may be asking to core through a slab.
None of that is automatically forbidden. It just means you’re applying for something rather than deciding something.
How Approval Actually Works
Every association handles this a bit differently, but the shape is consistent. Your governing documents (the declaration, bylaws, and rules) define what needs approval and who grants it. Many communities run it through an architectural review committee, and some hand it to the board directly.
What the board usually wants
A scope of works. Drawings or a marked-up floor plan. Your contractor’s license and insurance certificates, including workers compensation and liability at whatever limit the building requires. A schedule with working hours. Sometimes a security deposit against damage to common areas.
Timing is the part people underestimate
Committees meet on their own calendar, not yours. A submission that lands the day after a meeting waits for the next one. Requests for more information restart the clock. Budget four to eight weeks for approval on a typical unit renovation, and more in a heritage building or a co-op, where boards tend to hold broader discretion over what owners can do.
The contractors who move fastest here aren’t cutting corners. They’re submitting complete packages the first time, because they’ve seen what the committee asks for.
House Versus Apartment: What Changes
| Factor | Detached House | Apartment or Condo |
|---|---|---|
| Approval needed | Municipal permit | Municipal permit plus board or committee approval |
| Working hours | Local noise ordinance, generally generous | Building rules, often 8am to 4pm weekdays only |
| Material delivery | Driveway, any time | Booked service elevator, protected corridors, timed windows |
| Waste removal | Dumpster on site | Scheduled removal, often no dumpster permitted |
| Structural changes | Engineer plus permit | Frequently prohibited outright |
| Plumbing relocation | Generally your call | Common property, needs approval and often not feasible |
| Liability exposure | Your own property | Neighboring units below and beside you |
| Typical duration | Driven by scope | Scope plus approval, access, and elevator scheduling |
The pattern: nothing on the apartment side is impossible, but almost everything has a gatekeeper. Projects run long when owners plan for the work and forget to plan for the gatekeepers.
Logistics That Quietly Wreck Schedules
- Elevator booking. Most buildings allow one contractor at a time in the service lift, booked in advance. Miss your window and material sits in a loading dock for two days.
- Noise windows. Eight to four on weekdays is common, sometimes with no jackhammering before ten. That can halve the productive hours of a demolition day.
- Corridor and lobby protection. Masonite on floors, padding on lift walls, sometimes a dedicated cleaner. Usually the contractor’s cost, which should be in the quote.
- Parking. In dense buildings there may be nowhere for a trades vehicle at all, which changes how material arrives and what it costs.
- Neighbor notification. Some buildings require it, and doing it anyway is smart. A note under six doors before demolition buys enormous goodwill.
- Water shutoffs. Isolating your unit sometimes means shutting a riser, which means scheduling with the building and notifying everyone on that line.
- Dust and air handling. Shared ventilation can carry dust into other units. Sealing returns during demolition matters more here than in a house.
Design Choices the Building Makes For You
Constraints aren’t only bureaucratic. The physical building narrows the field too.
Floor coverings are the classic one. Many buildings mandate a minimum acoustic rating for anything hard-surfaced, or require carpet across a percentage of the floor area. That single rule can rule out the flooring you had in mind, so check it before you fall in love with wide plank oak.
Ceiling height limits what you can do with lighting. If you’re on a concrete slab with no cavity above, recessed cans may be off the table entirely, and the answer becomes surface mounts, track, or a dropped bulkhead in the zones where it’s worth losing the height.
Window and balcony treatments usually count as building appearance, which puts them under the association’s control regardless of the fact that you look through them.
Then there’s plain footprint. Apartments reward layout thinking more than square footage, since you rarely get to move a wall. Our guide to long narrow living room layouts covers the proportion problem most apartment living rooms have. For the utility side, where units frequently have to combine functions, we mapped workable plans in our piece on small bathroom and laundry room combos. And if you’re working with a compact bedroom, the storage strategies in our 10×10 bedroom layout guide apply almost directly.
Frequently Asked Questions
Do you need approval from the condo board to renovate?
Almost always for anything beyond cosmetic work. Painting or swapping a light fixture typically does not require it, while anything touching plumbing, electrical, flooring, waterproofing, walls, or the building’s appearance usually does. Your governing documents define the threshold, and it varies considerably between buildings. Co-op boards generally hold broader discretion than condominium associations, so the bar can be higher.
What is common property in an apartment building?
Common property is everything owned collectively by the association rather than by individual unit owners. It typically includes the structural slab and frame, the building envelope, roofs, corridors, and the plumbing, wiring, and ventilation that run through common walls and risers. In many buildings the waterproof membrane in wet areas is also common property. Owners generally control the finishes and the airspace inside their unit, which is a narrower boundary than most people assume.
How long does apartment renovation approval take?
Plan on four to eight weeks for a typical unit renovation, though it can run longer. The timeline depends on how often the board or architectural committee meets, whether your submission is complete on the first pass, and whether the building requires engineering review for anything structural. Incomplete applications are the biggest cause of delay, since a request for more information usually means waiting for the next scheduled meeting.
Can you move plumbing in an apartment?
Sometimes, but it is the single most constrained change in apartment renovation. Waste lines need fall, and in a concrete building there is often very little floor depth to work with. Relocating a fixture may mean building up the floor, which affects door heights and thresholds. Because the stacks are usually common property, any relocation needs approval and sometimes engineering sign-off. Short moves within an existing wet area are far more achievable than moving a bathroom or kitchen to a new wall.
What are typical renovation hours in an apartment building?
Many buildings restrict work to roughly 8am to 4pm on weekdays, with limited or no weekend work and additional limits on the noisiest activities like jackhammering or core drilling. Rules vary widely, and heritage or mixed-use buildings often have tighter windows. Confirm the hours before accepting a schedule from a contractor, since restricted hours meaningfully extend the calendar even when the labor total is unchanged.
Wrapping Up
The best predictor of how an apartment renovation goes isn’t the design or even the budget. It’s whether the person running it treats the building as a stakeholder from day one.
Read your governing documents before you draw anything. Find out what the flooring rules are, where the boundary between your unit and common property actually falls, and when the committee meets. Then design inside that. It sounds like the boring version of the project, but owners who front-load the constraints end up with more of what they wanted, not less, because they never have to redesign around a rejection halfway through.
