How do I find out which pipes are mine?
Who pays, usually: Your declaration usually decides, with state law filling gaps in some states; pipes serving several units are often the association's, while lines serving one unit vary widely from building to building.
Filed under Not clear yet
Condo plumbing responsibility comes first from your declaration, then state law, so find its definitions of unit and common elements and its maintenance article before you believe any rule of thumb.
From the Whose Pipe Is It? desk. Sources last checked November 3, 2026. .
No national rule exists. You may hear that everything inside the walls belongs to the association, and in some buildings that's even right. See it in your own document.
A common pattern is that pipes serving more than one unit are common elements. The arguments live one step away from that, in the line that serves only your unit but runs through a wall, a slab or someone else's ceiling. Declarations split there, and they split in different ways.
Which document are you looking for?
The main one is the recorded declaration. Depending on your state and building it may be called a master deed, CC&Rs or condominium instruments. The bylaws mostly run the association, and the rules cover daily conduct, but both can matter. Ask the manager for a full copy with every amendment. Failing that, check your closing papers or ask the county recorder's office. A later amendment can change the answer, so an old copy from a drawer isn't enough.
Read it in this order
- The definition of "unit". It usually states the boundaries: unfinished surfaces of walls, the slab, the middle of a party wall.
- The definition of "common elements". Look for a list that names pipes, ducts, conduits or plumbing.
- The definition of "limited common elements". Items serving one unit but outside its boundaries often land here, and they may have their own maintenance rule.
- The maintenance article. See who must maintain, repair and replace each category. Those words may be split.
- The insurance article. Who repairs a pipe and who pays after water damage can be two separate questions, and this is where the second one is usually answered.
- Any clause about damage caused by an owner. Look for negligence or misuse.
- The alterations article. If you're changing anything, this may shift the duty onto you.
Which words decide it?
You're looking for how the document draws its line. Some declarations go by location: inside your boundaries is yours. Others go by service: serving only you is yours, wherever it runs. Take a pipe inside a wall that serves only you. If your unit stops at the unfinished surface of the drywall, a location test may put that pipe outside your unit, while a service test may make it yours. Same pipe, opposite answer.
| Words | What they often signal | What to check next |
|---|---|---|
| "serving more than one unit" | A service test | What's said of one-unit lines |
| "exclusively serving" or "serving only" | One-unit lines singled out | Yours, or limited common elements? |
| "within the boundaries of the unit" | A location test | Where boundaries were drawn |
| "wherever located" | Service beats location | Who repairs walls opened to reach it |
| "from the point of connection" | A named handoff point | Riser, shutoff or wall? |
| "maintain, repair and replace" | The duty, in full | Whether cost is treated separately |
| "unless caused by", "negligence" | An exception shifting cost | The insurance article |
Drains and vents may be treated differently from water lines. And don't stop at the first sentence that sounds like an answer: "notwithstanding" or "except" further on can undo it.
What does your state's statute say?
These are the statutes read for this site. Each applies only in its own state, and each sends you back to your documents more than it tells you which pipe is yours.
Two others read don't answer this: Washington's RCW 64.90.470 is about insurance, and New York's Real Property Law 339-x about common charges. If your state isn't named, this site hasn't read its statute; that doesn't mean it has none. A co-op works differently again, through a proprietary lease.
What if the document is unclear?
That's why "not clear yet" is a real category here. A sensible way through:
When you can't tell
- If water is moving, deal with that first: close your unit's shutoff if you know it, then call staff or the emergency line. The argument can wait.
- Have a plumber note in writing where the pipe is, what it serves and what failed, with photos before anything is closed up.
- Ask the manager in writing who the association believes is responsible, and which section of the declaration it relies on. Keep the reply.
- Ask whether the board has adopted a responsibility chart or handled the same pipe in other units. Past practice is worth knowing, though a chart may not override the declaration.
- Before paying for something you think isn't yours, ask whether paying now affects your right to raise it later.
- When real money is involved, take the document and your notes to a lawyer licensed in your state.
If you own
Do this reading before anything leaks, and keep a marked copy with your insurance papers. Your HO-6 policy should fit whatever the declaration leaves with you, and your agent can check that against the insurance article.
If you rent
Your lease comes first, because your landlord generally answers to you and deals with the building on your behalf. Report the problem in writing, and see what to do if nothing happens.
The short of it
Find the definitions, then the maintenance article, then the insurance article, and notice whether your document goes by location or by service. If it still won't say, get the association's position in writing and take it to a lawyer licensed in your state.
Asked next
If a pipe is inside your wall, is it yours?
Not necessarily. A pipe in your wall may be a riser serving a dozen units, or a branch that only serves you, and declarations treat those differently. Check what it serves as well as where it sits, then see which test your document uses.
Can the manager or board simply decide that a pipe is yours?
They can state a position, and it may be correct, but ask which section it's based on. A manager's email isn't the same as the document.
Who pays for the wall if the pipe inside is the association's?
Don't assume the pipe's owner also pays for the drywall and paint. Look in the maintenance and insurance articles for wording on restoration.
Read it yourself
- Florida Statutes 718.113: maintenance of common and limited common elements, read Nov 3, 2026.
- Florida Statutes 718.111: repair absent an insurable event and the opt-out, read Nov 3, 2026.
- California Civil Code 4775: default repair duties and interrupted services, archived copy of the official page, captured Sep 14, 2026, read Nov 3, 2026.
- Virginia Code 55.1-1955: default duties and conditions originating in the common elements, read Nov 3, 2026.
- Illinois 765 ILCS 605/18.4: board duties for common elements, archived copy of the official page, captured Dec 9, 2024, read Nov 3, 2026.
- Illinois 765 ILCS 605/12: insurance provisions, archived copy of the official page, captured May 22, 2025, read Nov 3, 2026.
- Washington RCW 64.90.470: insurance provisions, read Nov 3, 2026.
- New York Real Property Law 339-x: common charges, archived copy of the official page, captured Aug 3, 2025, read Nov 3, 2026.