The First 30 Days with Your New Roommate: A Survival Guide

The first days with a new roommate set the tone for the entire cohabitation. This guide will help you establish a positive relationship from the start and avoid common misunderstandings.

Day 1: First Impressions Matter

Your first day together lays the foundation of the relationship.

Proper Introduction

Beyond just “hello,” take the time to:

• Share your basic routine (work/study schedule)
• Mention your key habits (early bird/night owl, tidy/relaxed)
• Ask about their preferences
• Be authentic, don’t create false expectations

Full Tour of the Flat

Even if you’ve seen it before, do a walkthrough together:

• Show where you keep your things
• Explain quirks (e.g., the faucet drips, the door sticks)
• Identify shared vs private spaces
• Locate together: electricity meter, water shut-off, Wi-Fi router

First Basic Rules

You don’t need a full manual, but establish the fundamentals:

• “Is it okay if I play music in the mornings?”
• “Do you have a bathroom preference in the mornings?”
• “Should we give notice before having guests over?”
• “How do we divide cleaning duties?”

The First Day Mistake

Don’t: Assume “we’ll talk about it later” Do: Establish 3-4 basic rules right away

First Week: Establishing Routines

The first few days reveal a lot about each person’s habits.

Observe Without Judging

During this week, simply observe:

• What time they wake up/go to sleep
• How they use the kitchen
• The level of tidiness they maintain
• How often they have guests
• Time spent in the bathroom

Don’t complain yet - it might be first-week nerves. Give it time.

Share Your Routine Naturally

Help your roommate get to know you:

• “I usually get up at 7, I’ll try to be quiet”
• “My partner comes over for dinner on Wednesdays”
• “I like to cook on Sundays, does the smell bother you?”

First Shared Purchase

Decide together what to share:

• Basic products (toilet paper, dish soap, cleaning supplies)
• Common spices and condiments
• Coffee, tea, sugar (if both use them)

Payment system: Alternating or using Splitwise from the start.

First Weekend

The first weekend reveals a lot:

• Do they need alone time or enjoy socializing?
• Do they have frequent visitors?
• Is their routine different from weekdays?

Respect the differences - not everyone socializes the same way.

Weeks 2-3: Adjustments and Negotiations

Now that you know your roommate better, it’s time to fine-tune.

First Cleaning Conversation

If you see that standards differ, speak up now:

• “I’ve noticed we have different tidiness styles - can we find a middle ground?”
• Suggest a system: weekly turns or assigned areas
• Be specific: “clean the kitchen” means what exactly?

Set Schedules for Shared Spaces

Bathroom in the Mornings:

• If both work/study, assign schedules: “Me 7-7:30, you 7:30-8”
• Or set a maximum time: 20 minutes each

Kitchen Use:

• If both cook, establish who uses it when
• Or cook together and share costs (if the relationship is going well)

First Financial Meeting

Review the first month’s expenses:

• Were the estimates correct?
• Is someone using more than expected?
• Is the payment system working?

Adjust if needed - better to do it now than after 6 months.

First Discomfort

Something will bother you. How you handle it is crucial:

Bad example: Ignoring it or complaining to others Good example: “Hey, can we talk for a moment? I’ve noticed that…”

Use the formula:

1. Observation (without accusing): “I’ve noticed that…”
2. Impact: “This affects me because…”
3. Request: “Could we…”
4. Openness: “What do you think?”

Week 4: Consolidating the Relationship

The first full month is an important milestone.

First Month Evaluation

Ask yourselves these questions (mentally or together):

• Do I feel comfortable at home?
• Is there something I need to change?
• Is the expense split fair?
• Do we respect each other’s spaces?

First Social Event Together

If the relationship is going well, consider:

• Watching a movie together
• Cooking a shared dinner
• Inviting mutual friends
• Going out for drinks

Note: Being friends isn’t mandatory, but getting along is.

Contract Adjustments (If Applicable)

If something in the initial agreement isn’t working, modify it now:

• Expense division
• Use of spaces
• Guest policy
• Cleaning rules

It’s easier to adjust after one month than after one year.

Common First Month Situations

The Overly Friendly Roommate

Signs:

• Wants to do everything together
• Gets offended if you say no
• Doesn’t respect your alone time

How to handle it:

• Be clear: “I value my space, it’s not personal”
• Set gentle but firm boundaries
• Suggest occasional activities, not daily ones

The Overly Distant Roommate

Signs:

• Never home
• Avoids conversations
• Minimal communication

How to handle it:

• Respect their style, they may be introverted
• Maintain basic communication via messages
• Don’t take it personally

Cleaning Differences

The most common first-month problem.

If you’re the tidier one:

• Don’t be passive-aggressive by cleaning everything
• Talk directly about expectations
• Propose a clear cleaning system

If you’re the more relaxed one:

• Acknowledge that your “normal” might be “dirty” for others
• Make an extra effort at the beginning
• Find your minimum acceptable standard

Noise and Schedules

Situation: Your roommate makes noise when you sleep or vice versa.

Solution:

• Invest in earplugs (3 EUR)
• Headphones for the noisy one
• “Absolute silence” hours: 11 PM - 8 AM
• Rugs and closing doors carefully

Eating Non-Shared Food

First offense: It was probably a mistake.

Say: “Hey, that yogurt was mine. Can we respect non-shared food?”

If it happens again: Label your food or get separate fridge space.

Unannounced Guests

Problem: Their partner/friends show up without notice.

Solution:

• “I’d like you to let me know when guests are coming”
• Establish a rule: minimum notice of X hours
• Especially important if guests are staying overnight

Fatal First Month Mistakes

Mistake 1: Letting “Small” Things Slide

Those “little annoyances” accumulate and explode after months. Speak up now.

Mistake 2: Trying to Change the Other Person

You can’t change a person. Adjust expectations or seek compromise, not transformation.

Mistake 3: Sharing Too Much, Too Soon

You don’t need to be best friends immediately. Build trust gradually.

Mistake 4: Not Documenting Agreements

“I thought we had agreed to…” - Write down the important rules.

Mistake 5: Comparing with Previous Roommates

“My previous roommate always…” - Every person is different. Start from scratch.

First 30 Days Checklist

First Week

• Proper introductions
• Full flat tour
• 3-5 basic rules established
• First shared purchase
• Shared routines

Second Week

• Cleaning system defined
• Common space schedules
• First conversation about expenses
• Observe habits without judging

Third Week

• First “difficult conversation” (if needed)
• Adjustments to initial rules
• Establish clear boundaries
• Review what works and what doesn’t

Fourth Week

• First month evaluation
• Adjust agreements if needed
• Celebrate (if things are going well)
• Plan the next month

Signs of Good Cohabitation

If you see these signs, you’re on the right track:

• You communicate openly about problems
• Both make an effort to accommodate the other
• There’s mutual respect for spaces and time
• Expenses are split fairly and on time
• You can have uncomfortable conversations without drama
• You feel comfortable at home
• There’s a balance between socializing and privacy

Warning Signs

If you see these signs, you need immediate action:

• One person avoids being at home
• Communication only through passive-aggressive notes
• Constant arguments about the same thing
• Lack of respect for belongings
• Recurring payment problems
• Constant boundary violations
• Walking on eggshells feeling

If Things Aren’t Working

Sometimes, despite best efforts, it’s just not compatible.

Signs of Fundamental Incompatibility

• Irreconcilable differences in cleanliness
• Completely opposite schedules with no solution
• Total lack of mutual respect
• Trust issues (theft, lies)

Steps If You Want to Leave

1. Review your contract: notice periods
2. Talk honestly with your roommate
3. Help find a replacement
4. Give appropriate notice (30-60 days)
5. Leave on good terms

Steps If You Want Them to Leave

1. Review what the contract says
2. Document serious problems if any
3. Honest conversation about why it’s not working
4. Give reasonable time to find a new place
5. Consider if you can hold out until the end of the contract

Building for the Future

The first 30 days are just the beginning. If they go well:

Create Small Traditions

• Coffee together on Sundays
• A series you watch together
• Shared dinner once a month
• Quarterly deep cleaning together

Maintain Regular Communication

Don’t wait for problems to arise:

• Monthly 10-minute check-in
• “Anything to adjust?”
• “How’s everything going?”

Celebrate Milestones

• First month: small celebration
• Three months: evaluate and adjust
• Six months: renewal or decisions
• One year: definitely celebrate

Resources for New Roommates

Useful Apps

For communication:

• WhatsApp groups for the flat
• Slack (if you’re very organized)

For chores:

• Tody: organize cleaning
• OurHome: shared household tasks

For expenses:

• Splitwise: the best for splitting expenses
• Settle Up: simple alternative

Useful Templates

Cohabitation Agreement: Simple document with:

• Cleaning rules
• Expense division
• Guest policy
• Respected schedules
• Both signatures

Shared Calendar:

• Cleaning turns
• When to expect guests
• Vacations/absences
• Scheduled payments

The Best Advice

Communicate, communicate, communicate.

90% of cohabitation problems come from lack of communication. If something bothers you, say it politely but clearly. If something is working well, say that too.

The first 30 days set the tone, but cohabitation is an ongoing process of adjustment and negotiation. With patience, mutual respect, and open communication, you can build a harmonious living arrangement that makes your flat a true home.

Need More Help?

The first days with a new roommate can be challenging, but with the right tools, they can lay the foundation for excellent cohabitation.

Looking for more cohabitation tips? Explore our other articles on the Roomio blog.

Have specific questions about your situation? Contact us - we’re here to help you create the best shared living experience.