Sharing an apartment can make NYC affordable — until money, chores or visitors cause tension. A written roommate agreement turns expectations into rules everyone can follow. This guide explains what to include, how to negotiate fair terms, and which red flags to watch for before you sign a lease.

Why a written agreement matters

A roommate agreement complements the landlord’s lease. It clarifies day-to-day responsibilities, payment routines and exit plans so small problems don’t become costly disputes. Even if all roommates are on the lease, an agreement protects relationships and sets a path for resolution.

Core items to include

• Names & dates: Full names of roommates, address, and agreement start/end dates.
• Rent & payment split: Exact share for each roommate, due date, payment method, and where to deposit (bank account, Venmo handle, etc.).
• Utilities & recurring bills: Which bills are shared (electric, gas, internet, streaming), split percentages, and billing responsibility.
• Security deposit & damages: How the security deposit is handled, damage reporting process, and how repair costs are split.
• Cleaning & chores: A rotating schedule or fixed responsibilities (trash recycling, bathroom cleaning, common space upkeep).
• Guests, overnight visitors & subletting: Limits on frequency, notice periods, length of stay, and sublet rules tied to landlord permission.
• Pets: Whether pets are allowed, who is responsible for pet damages, and any pet fees.
• Noise & quiet hours: Agreed quiet windows (e.g., 11pm–8am) and expectations for parties.
• Smoking & substances: Policy on smoking, vaping, cannabis, or other substances inside the apartment.
• Conflict resolution: Steps to resolve disputes (talk first, mediation, written notices) and an agreed escalation path.
• Moving out & replacement: Notice period, subletting or replacement roommate process, and final inspection procedures.

Practical sample clauses (short & clear)

• Rent Payment: "Rent of $3,000 is split 50/50. Each roommate pays $1,500 by the 1st of every month via bank transfer to [account]. Late fee of $50 after the 5th unless communicated in writing."
• Utilities: "Electric and internet will be split 60/40; roommate A pays electric, roommate B pays internet and provides receipts monthly."
• Guests: "Overnight guests are permitted up to 3 nights in any 30-day period per roommate. Longer stays require written approval from all roommates."
• Cleaning: "Shared areas cleaned weekly on Saturday. Failure to follow schedule results in a $25 cleaning fee split among non-compliant roommates."

How to negotiate fairly

1. Be transparent about finances and non-negotiables before moving in.
2. Split awkward costs (like high heating bills) proportionally to usage or room size.
3. Document verbal agreements—better to have a short written clause than rely on memory.
4. Use neutral language and avoid punitive tones; agreements are easier to follow when roommates feel treated fairly.

Red flags to watch for

• Someone refuses to put key terms in writing or avoid the topic of deposits and payments.
• Repeated late payments or secret sublets already happening.
• Reluctance to sign anything at all while expecting you to be on the lease alone.
• Evidence of illegal activity or severe cleanliness neglect that can affect your security deposit.

Quick one-page checklist before you sign

• Do all roommates know the exact monthly share and due dates?
• Is the security deposit split and accounted for?
• Are utilities, internet, and streaming services assigned clearly?
• Have you agreed on guest rules, quiet hours, and cleaning expectations?
• Is there a plan for move-outs, replacements, and damage responsibility?
• Is the agreement signed and dated by everyone?

Taking 30–60 minutes to write a clear roommate agreement can save months of frustration — and preserve friendships. Keep a signed digital copy and consider periodic check-ins to update terms as circumstances change.