In recent years, the number of people choosing to share an apartment has been increasing, especially in urban areas. With rising rents and the desire to save on living expenses, this lifestyle of living with friends, colleagues, or even strangers is gaining attention. However, while apartment sharing offers cost advantages, it also has disadvantages due to differences in privacy and lifestyle. For those wondering, "What's apartment sharing really like?", "Who is it suitable for?", and "How can I prevent problems?", this article provides a thorough explanation of the advantages and disadvantages of apartment sharing, as well as tips for success. If you're considering apartment sharing, please use this as a reference.
What is a room share?
Room sharing refers to a lifestyle where multiple people share a single residence. Typically, this involves living with friends, colleagues, or people met online, with each person having their own private room while sharing common spaces such as the kitchen, living room, and bathroom.
One of the biggest advantages of living with a roommate is that you can share rent and utility costs, which significantly reduces the financial burden compared to living alone. Another benefit is that living with a roommate can help you develop social skills and expose you to new perspectives.
The difference between room sharing and shared housing
"Room sharing" and "share house" are often confused, but there are actually several differences between them.
| item | Room sharing | Share house |
| Contract type | Residents make individual contracts | The property is managed by a management company or owner. |
| Relationships between residents | Mostly friends and acquaintances | It's common to live with complete strangers. |
| Management/Equipment | We will provide our own furniture and appliances. | They are often fully furnished with furniture, appliances, and shared facilities. |
| Rule settings | The residents decide on the rules together. | The management company sets the rules. |
| privacy | Depending on the floor plan, private rooms are the norm. | Private rooms or dormitory-style accommodations are available. |
The appeal of room sharing lies in the freedom for residents to set their own rules, but prior agreements are crucial to avoid problems. On the other hand, share houses are managed by a management company, making them a safe and convenient option even for those new to communal living.
Reasons why room sharing is popular
In recent years, room sharing has become increasingly popular, especially among young people. The following are some of the reasons for this:
- Saving on rent and living expenses: Rent for single people is soaring in urban areas, so room sharing allows you to share rent, utilities, internet costs, etc., thus easing the financial burden.
- Living in a spacious property: By sharing a larger apartment (such as a 2LDK or 3LDK) that would be difficult to rent on your own, you may be able to live in a comfortable space with a living room and balcony.
- Security benefits: Compared to living alone, living with someone reduces security risks. Room sharing, especially among women, is popular because it provides a sense of security.
- You can gain new encounters and experiences: Living with roommates increases opportunities to be exposed to new values and cultures. In particular, for international students and those interested in intercultural exchange, it has the advantage of fostering an international perspective.
- Reducing the burden of household chores: One of the advantages of room sharing is that you can live more efficiently than living alone by sharing household chores such as cleaning and cooking. This is especially beneficial for busy working adults, as it allows them to create a comfortable living environment while reducing their burden.
As described above, room sharing has gained attention in recent years due to its many advantages, including cost reduction, a comfortable living environment, safety, and social connections. However, problems are likely to arise if rules are not established beforehand, so prior discussion and confirmation of the contract are crucial.
Advantages of room sharing
Room sharing offers many advantages that living alone doesn't. It's a very attractive option for those who want to save on rent and living expenses while enjoying a comfortable living environment. Here, we'll explain some of the main benefits of room sharing in detail.
You can save on rent and living expenses.
The biggest advantage of room sharing is cost reduction. In urban areas, rent for single-person apartments is soaring, so living with a roommate can alleviate the financial burden.
- Rent sharing: For example, renting a 2DK apartment alone might cost 100,000 yen per month, but with room sharing, it could be as low as 50,000 yen per person.
- Saving on utility bills: You can share electricity, water, and internet costs, which helps reduce your monthly fixed expenses.
- Sharing household goods: You can jointly purchase consumables such as toilet paper and detergent, reducing unnecessary expenses.
Thus, room sharing is a budget-friendly lifestyle, offering significant advantages, especially for students and young professionals.
You can share the burden of household chores.
When living alone, you have to do all the housework yourself, but with a roommate, you can share the burden of cleaning, cooking, taking out the trash, and so on.
for example,
- We take turns cleaning each week.
- Cooking in shifts
- I share the task of taking out the trash with my roommate.
By assigning roles in this way, the burden on one person is reduced, and household chores can be completed more efficiently. This is especially beneficial for people who are busy with work or school, as it allows them to "live comfortably while reducing their burden."
Security measures will be strengthened.
Compared to living alone, room sharing is a superior option in terms of safety.
- Peace of mind while away from home: Having someone at home reduces the risk of burglaries and intruders.
- Peace of mind when returning home late at night: This provides a more reassuring environment, especially for women, compared to living alone.
- Helping each other in emergencies: You can immediately ask for help in case of sudden illness or trouble.
For those who feel anxious about living alone, especially in urban areas, room sharing can be a safe option.
Enjoy a lively life
One of the attractions of room sharing is the "liveliness" that you can't experience when living alone.
- The reassuring feeling of having someone there when you come home from work or school
- We can enjoy cooking and watching movies together on our days off.
- You can easily talk about your worries and concerns.
Thus, it's an ideal lifestyle for those who want to live in an environment where they are less likely to feel lonely and who want to communicate with others. In particular, roommates can be a great source of support for people who have moved to Tokyo from rural areas or who want to build new relationships.
There's a possibility of living in a spacious property.
While small studio apartments or 1K apartments are common for single people, room sharing allows you to live in larger properties such as 2LDK or 3LDK apartments.
- Comfortable living in a property with a living room
- The ample storage space means you don't have to worry even if your belongings increase.
- You can enjoy excellent amenities such as a balcony and a counter kitchen.
For people who work remotely or who want a space for their hobbies, living in a spacious room is a huge advantage.
Search for a room
Only furnished properties with appliances are listed!
Disadvantages of room sharing
While room sharing offers advantages such as saving on rent and enjoying a lively lifestyle, there are also disadvantages to be aware of. To avoid problems inherent in communal living, it's crucial to understand potential issues beforehand and take preventative measures. Here, we'll explain in detail the common disadvantages of room sharing and how to resolve them.
It is difficult to secure privacy.
One of the biggest challenges of room sharing is the difficulty in securing personal time and space.
- The lack of private rooms, or poor soundproofing, means there is less time to relax alone.
- I sometimes feel stressed because I can't freely use the shared spaces.
- I sometimes find everyday noises and visitors bothersome.
<Solution>
- Choose a property with completely private rooms (2LDK or 3LDK apartments offer better privacy than 1LDK apartments).
- Establish rules to respect each other's lifestyles (such as being considerate about late-night TV viewing and phone calls).
- I go out regularly to secure personal time (by using cafes or gyms).
Establishing rules to ensure privacy from the outset can reduce stress.
Financial troubles are likely to occur.
In shared living arrangements, financial disputes regarding the division of rent and utility costs tend to occur frequently.
- My roommate is late with his payment.
- We disagree on how to split the rent.
- The burden of purchasing daily necessities is unevenly distributed.
<Solution>
- Rent and utilities are paid collectively for everyone, and then split later (one representative pays, and the other members send money).
- Use payment management apps (such as Splitwise or LINE's bill-splitting function).
- First, decide on the payment rules for "common expenses (such as toilet paper and detergent)."
Money issues can affect friendships and trust, so establishing clear rules is essential.
Stress caused by differences in daily routines
Having different waking and sleeping times or lifestyle habits with your roommate can be a source of stress.
- Noise problems are more likely to occur when you have roommates who are night owls and early risers.
- I feel stressed when meal times and shower times overlap.
- Whether or not you work remotely significantly impacts your living environment.
<Solution>
- Choose a roommate with a similar lifestyle (someone with the same occupation or lifestyle is recommended).
- Establish rules to respect each other's rhythms (e.g., lower the volume at night, get ready quietly in the morning).
- Take measures to reduce noise, such as using headphones or separating workspaces.
Those who work from home frequently should also consider whether they can secure a dedicated workspace.
If we don't set rules, problems will increase.
In shared living situations, if you don't clearly define the rules specific to communal living, you're likely to encounter more problems.
- If you don't decide on a division of labor for cleaning and taking out the trash, the burden will fall disproportionately on one person.
- The rules for using food in the refrigerator and shared spaces are vague, leading to problems with unauthorized use.
- Opinions are divided regarding guests or romantic partners staying overnight.
<Solution>
- All roommates should create "minimum rules" (such as cleaning duties, food management, and rules for visitors).
- Utilize LINE groups and whiteboards to facilitate smooth communication.
- First, decide what is acceptable to share (e.g., seasonings and cleaning supplies can be shared, but personal food items are not).
Establishing rules in advance can not only prevent problems from arising but also help build harmonious relationships.
The options for choosing a property are limited.
One disadvantage of properties that allow room sharing is that there are fewer options compared to properties for single occupancy.
- Many rental properties have a "no room sharing" clause in their contracts.
- Some owners do not allow contracts between friends.
- The initial costs can be higher if more than one person is living there.
<Solution>
- Utilize real estate companies that handle properties that allow room sharing.
- Prove to the landlord that you have the ability to pay the rent (prepare income statements, etc.).
- Consider a shared house from the start (many properties come furnished with furniture and appliances, which helps reduce initial costs).
Another option is to choose properties that are suitable for room sharing, such as corporate-leased properties or monthly rental apartments.
Key points for choosing and signing a lease for a shared apartment.
To successfully share an apartment, it's crucial to choose a comfortable floor plan and understand the key points of the contract. Choosing the wrong property can make it difficult to maintain privacy and increase the likelihood of conflicts with roommates.
This article provides a detailed explanation of how to choose the best floor plan for a shared apartment and important points to consider when signing a contract.

What kind of floor plan is suitable for roommates?
To ensure a comfortable shared living situation, it's important to choose a floor plan that takes your lifestyle and privacy into consideration.
① Completely private room type | This is the one for those who value privacy!
When sharing an apartment, a layout with "completely private rooms" is the most popular.
- Privacy is ensured → You can have your own space to study, work, or relax.
- Even with different lifestyles, stress levels are lower → This can prevent noise problems caused by differences in night owl/morning person patterns.
- Perfect for working from home → You can concentrate on your work in your own room.
<Recommended floor plan examples>
- 2LDK and 3LDK properties (with 2-3 separate rooms).
- 1LDK apartment with loft (the loft can be used as a separate room)
② Type with shared spaces | Comfortable living while keeping costs down
For those who want to keep costs down or who want to enjoy interacting with roommates, a floor plan with a shared space is ideal.
- Private rooms are provided, while the living room and kitchen are shared.
- It's easier to keep rent low (even a larger property is less of a burden than living alone).
- There is a space where you can eat together and relax.
However, having shared spaces makes it important to establish rules and responsibilities for cleaning.
<Recommended floor plan examples>
- 3DK and 4LDK properties (private rooms + dining room/kitchen included)
- Detached house rental (allows for spacious living room and balcony)
③ Utilizing the living and dining area | For those who want an open and spacious lifestyle
If you value interaction with your roommates, it's a good idea to choose a property with a spacious living room or dining area.
- Relax in an open space
- We can enjoy meals and movies together after work.
- Easy to host home parties
However, if you share a living room, it's important to decide who gets to use it and when, as well as establish cleaning rules.
<Recommended floor plan examples>
- 2LDK and 3LDK properties with spacious living rooms.
- Designer apartment with an open kitchen
Room share contract types | Basic knowledge to prevent problems
When sharing an apartment, the scope of responsibility varies depending on the type of contract, so it's important to thoroughly understand the contract details.
① A pattern where everyone becomes a contract holder | A fair contract structure
All roommates sign the contract, and everyone is responsible for the rental agreement.
<Benefits>
- Equal responsibility → Fewer problems when moving out
- The risk of unpaid rent is low (because everyone shares the same responsibility).
<Disadvantages>
- A new contract is required when bringing in a new roommate.
- When someone moves out, the contract needs to be reviewed.
This arrangement is suitable if you want to prevent the risk of unpaid rent.
② A pattern where only the representative signs the contract | Allows for flexible changes of roommates
The representative signs the contract, and the roommate lives there as a sub-tenant (co-resident).
<Benefits>
- It's easy to change roommates.
- The contract process is simple.
<Disadvantages>
- The representative is responsible for paying the rent (if other roommates don't pay, the representative will have to pay).
- The representative may be forced to bear the burden upon vacating the property.
This type of contract is suitable if your roommates are fluid or if you are considering short-term room sharing.
③ Check the landlord's rules and conditions | Essential to prevent problems!
Room sharing may be prohibited in some properties, so it is important to check with the landlord or real estate company in advance.
- Check if the property allows room sharing (there's a difference between "accommodates two people" and "room sharing allowed").
- Check if the contract includes a clause regarding "adding or changing roommates."
- Clearly define the proportion of the security deposit and key money that will be borne by each party.
- Check in advance how to handle problems (noise, rules upon moving out, etc.).
Clearly defining the terms of the agreement is crucial for preventing future problems when sharing an apartment.
Search for a room
Only furnished properties with appliances are listed!
People who are suited to and not suited to room sharing
While room sharing offers advantages such as saving on rent and enjoying a lively lifestyle, it also carries the risk of stress and problems inherent in communal living.
So, what kind of person is suited to room sharing? Conversely, what kind of person is not suited to it? Understanding these differences will help you choose a lifestyle that suits you.
Characteristics of people who are suited to room sharing
Room sharing is suitable for people who have good communication skills and can enjoy living together with others. Those who fit the following characteristics are likely to be well-suited to room sharing:
① People who want to save on rent and living expenses
- I feel that the rent for living alone is a burden.
- I want to save money by sharing the costs of utilities and daily necessities.
- I want to live in a spacious room at a low cost.
Rents in urban areas are soaring, and living alone often limits one's living options. With room sharing, you can live in a larger property for the same budget, making it possible to live comfortably while keeping costs down.
② People who like living with others
- I like spending time with my friends.
- I want to enjoy a meal and conversation with someone.
- Living alone often leads to feelings of loneliness.
The appeal of room sharing is the enjoyment of living together with others. You can enjoy things you can't experience when living alone, such as spending time together in the living room or enjoying cooking and movies together.
③ Someone who can follow the rules of communal living.
- You can keep things tidy and your room clean.
- I can follow the rules for using and cleaning shared spaces.
- Being able to properly manage rent and utility payments.
In shared living situations, consideration for others and adherence to rules are crucial. If you can establish and follow rules such as taking turns cleaning, paying utilities, and being mindful of noise levels, you can live comfortably and stress-free.
④ People who can accept differences in values
- Respect for different values and lifestyles
- Don't worry too much about slight differences.
- A flexible personality
Because roommates come from different backgrounds and lifestyles, differences in perspectives can arise. If you respect each other and are willing to compromise, you can enjoy a smooth and harmonious shared living experience.
⑤ People with flexible lifestyles
- It can flexibly adapt to moving or changes in lifestyle.
- I'm thinking about sharing a room for a limited time.
- Suitable for short-term stays such as job changes, studying abroad, and working holidays.
Room sharing is suitable for short-term stays, making it a great option for those looking for temporary housing for a few months to a few years due to job changes, studying abroad, or other reasons.
Characteristics of people who are not suited to room sharing
Room sharing is not suitable for people who want to live independently or prioritize their privacy. If any of the following characteristics apply to you, living alone may be more comfortable.
① People who value their alone time
- I feel stressed if I don't have my own personal space.
- I want to spend my time quietly after returning home.
- I want to live freely without anyone interfering with me.
Room sharing makes it difficult to have complete solitude, so it's not suitable for people who want quiet time. In particular, in layouts with many shared spaces, noise from daily life in the living room or kitchen can be bothersome.
② People who are sensitive to differences in lifestyle and values
- I tend to be bothered by everyday noises and minor manners.
- I get easily irritated by other people's actions.
- I want to prioritize my own rules.
If your roommate's lifestyle doesn't match yours, it can cause stress due to differing bedtimes, late-night noises, and other issues. People who are easily bothered by small details might find living alone more comfortable.
③ People who are not good at tidying up or following rules
- I don't mind if my room is messy.
- I find cleaning shared spaces a hassle.
- They are lax about paying living expenses and rent.
In shared living situations, cleanliness and good manners are expected, so people who can't keep things tidy or follow the rules are likely to cause problems. Leaving common areas dirty, in particular, can damage relationships with roommates.
④ People who are not good at managing money
- I often forget to pay my rent and utility bills.
- I tend to lend and borrow money.
- Unable to manage living expenses
In shared living arrangements, problems often arise if rent and shared expenses are not properly managed. Late payments or unfair burdens can damage relationships with roommates, so it's not suitable for those who can't manage these matters responsibly.
summary
Room sharing offers many advantages, such as saving on rent and living expenses, living in a larger property, and a sense of security. On the other hand, there are also disadvantages, such as difficulty in maintaining privacy, the risk of financial troubles, and the stress caused by differences in lifestyle.
To ensure a comfortable room share, choosing the right property, setting rules, and reviewing the contract are crucial. Consider the characteristics of people who are suited to room sharing and those who are not, and choose the living arrangement that suits you best.