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What are the differences between semi-detached houses and townhouses?

Last updated: 12 Jul 2026
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What are the differences between semi-detached houses and townhomes? Which should you choose? This is a question many people ask, especially those looking for a house. Both townhomes and semi-detached houses are popular choices due to their lower cost compared to single-family houses. However, many may hesitate or have questions about these two types of housing.

This article compiles all the essential information to help you clearly see the differences between townhomes and semi-detached houses, making it easier to decide which type of house to buy.

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What are the differences between semi-detached houses and townhomes?

To explain the differences between semi-detached houses and townhomes, we need to review their characteristics, differences, advantages, and disadvantages.

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What is a semi-detached house?

To explain semi-detached houses simply, imagine two detached houses attached together, sharing a common wall or partition. However, each house has its own separate front, back, and side areas, and a separate roof. Ownership of assets will be considered common property. Twin house owners are responsible for maintenance and insurance of the house and its assets.

Currently, many projects offer underground access for the adjoining unit or a shared kitchen area, resulting in more usable space in modern twin houses.

Legally, twin houses must have the following characteristics:

– Starting land size of 35 square wa (single houses require a land size greater than 50 square wa)

– Land frontage of at least 8 meters (but cannot build across the entire land)

– Side area of ​​the house must be at least 2 meters, uncovered by any structures

– Setback of 3 meters from the front of the house and 2 meters from the back (a roof cover is allowed, but no enclosed structure is permitted, and it must be approximately 50 centimeters from the property line to avoid disturbing neighbors)

– Shared structures such as walls or beams between two houses are considered joint property. Demolition or modification requires the consent of the neighbor.

Setback distance from the public road as determined by the Department of Public Works and Town Planning

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Advantages and Disadvantages of Twin Houses

The first advantage of buying a semi-detached house is that it's cheaper while offering a living atmosphere similar to a detached house. It also offers more privacy than a townhome because it's only shared with a neighbor on one side, or some projects even have underground connecting sections, creating additional usable space. Furthermore, you don't have to worry about conflicts if you need to renovate or extend your house. The disadvantage of semi-detached houses is their higher price compared to townhomes in the same location.

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What is a townhome?

Simply put, a townhome is a higher-level townhome. Generally, the house resembles a row house, with shared walls or partitions with other townhomes. If it's not a corner unit, there will be vacant space in front and behind the house, but corner townhomes will have vacant space on the sides as well.

What distinguishes townhomes from townhomes is that townhome projects, which are mostly newer developments, often include additional amenities that cater to a wider lifestyle.

By law, townhomes or townhomes must have the following characteristics:

– A townhome or townhome must have a minimum frontage of 4 meters.
– There must be vacant space in front, between the fence or property boundary and the house wall. – At least 3 meters wide.
– There must be at least 2 meters of open space behind the townhome or townhome.
– townhomes or townhomes built in a long row totaling 40 meters must have a 4-meter open space between rows. This means that if there are 10 townhomes or townhomes that are 4 meters wide each, there must be a 4-meter open space between them.

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Advantages and Disadvantages of townhomes

The advantage of townhomes is their affordability. The price of this type of house is within the range that most people can afford, not excessively high compared to detached houses or semi-detached houses in similar prime locations.

The disadvantages of townhomes are, of course, less privacy compared to detached houses or semi-detached houses. The surrounding environment involves sharing fences and walls with neighbors, which may make renovations or other activities less convenient and increase the risk of conflicts with neighbors. Also, there is less interior space compared to detached houses or semi-detached houses.

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Thank you for the valuable information from DD Property.


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