
Imagine a single building housing 20,000 residents—a structure so vast it functions as an independent city. What might seem like a sci-fi dystopian dream is actually a real housing development, offering a glimpse into the future of hyper-urbanized living.
As major cities worldwide struggle with overpopulation, rising rent prices, and limited living space, developers are turning to super-dense housing solutions to accommodate growing populations. This massive apartment complex is a prime example of that concept.
But what is it really like to live inside a building that houses the equivalent of a small town?
- How much does it cost to live there?
- What are the living conditions like?
- Is this the future of urban housing, or a warning of what’s to come?
Let’s take a deep dive into the world’s most overcrowded housing complex, exploring its costs, challenges, and the reality of living in such an environment.
The Massive Apartment Complex That Feels Like a City

Located in Hangzhou, China, this giant residential building is one of the most densely populated structures in the world.
- Total Residents: Over 20,000 people live in the complex.
- Number of Units: More than 5,000 apartments are stacked into this giant structure.
- Amenities: Includes restaurants, shops, gyms, and even schools, making it a self-contained ecosystem.
For many, this type of housing is an affordable solution in cities where rent prices have become unaffordable for the average worker. But others describe it as claustrophobic and overwhelming, raising questions about whether mega-buildings like this are a sustainable housing solution or a step toward urban dystopia.
How Much Does It Cost to Live in This High-Density Complex?

One of the most attractive aspects of living in this mega-building is the low cost of rent compared to standard city apartments.
- Studio Apartment (150-250 sq. ft.): $200 – $400 per month
- One-Bedroom Apartment (300-500 sq. ft.): $500 – $700 per month
- Larger Units (600+ sq. ft.): $800 – $1,200 per month
Compared to average city rents, these prices are significantly lower, making it an appealing option for students, young professionals, and low-income families.
What Is It Like to Live Inside a 20,000-Person Apartment Complex?

Living in such a high-density environment comes with both benefits and drawbacks.
The Benefits:
- Affordability: The biggest advantage is that rent prices are far lower than typical city apartments.
- All-in-One Living: Shops, restaurants, and services are available within the building, reducing the need to leave.
- Community Feel: Some residents enjoy the tight-knit social environment, where neighbors become like family.
- Convenient Transportation: Many mega-complexes are built near metro stations or have their own shuttle services.
The Downsides:
- Overcrowding: The sheer number of people means hallways, elevators, and public spaces are constantly busy.
- Noise Issues: With thousands of residents in one building, noise levels can be a major problem.
- Limited Privacy: Many apartments are small and tightly packed, making it hard to find personal space.
- Maintenance Struggles: Upkeep in such a massive building can be challenging, with complaints about elevator breakdowns and sanitation issues.
A Look Inside: What Do the Apartments Look Like?

While the size of the units varies, most apartments in the building are compact and minimalistic, designed to maximize efficiency.
- Studio Units: Often feature a fold-out bed, compact kitchen, and a tiny bathroom.
- One-Bedroom Units: Provide slightly more space but are still significantly smaller than standard apartments.
- Larger Family Units: More expensive but designed for multi-person households with separate sleeping areas.
Some apartments have been creatively designed to feel larger, using mirrors, smart furniture, and space-saving techniques. However, many residents must sacrifice personal space for affordability.
A Growing Trend: Are These Super-Sized Buildings the Future?

As urban populations grow, mega-buildings like this are becoming more common in cities where real estate is scarce and expensive.
In Hong Kong, Tokyo, and New York, similar high-density housing solutions have been introduced, often aimed at young professionals and low-income residents.
Pros of High-Density Living:
- More affordable housing options in expensive cities.
- Reduces urban sprawl, keeping populations closer to city centers.
- Encourages sustainability, as residents share utilities and resources.
Cons of High-Density Living:
- Mental health concerns due to overcrowding and lack of privacy.
- Potential infrastructure failures, as maintenance becomes harder over time.
- Fire safety risks, as evacuating thousands of residents quickly is a challenge.
While some see these developments as an efficient housing solution, others worry they reduce the quality of life and set a dangerous precedent for urban planning.
Conclusion
Mega-buildings housing tens of thousands of people may seem futuristic, but they are becoming a real solution for overcrowded cities.
For some, the affordability and convenience make it a perfect living situation. For others, the lack of privacy and overwhelming population density make it feel claustrophobic and stressful.
As cities continue to expand, super-high-density apartment complexes may become the norm, raising questions about how we design future urban living spaces.
Would you ever live in a mega-apartment building like this? Let us know in the comments!