9 important measures before building a new house.

Building laws are crucial for landowners to understand before starting construction on their land. While owning a dream house is a goal for many, it's essential to verify that the size and type of land they own allows for construction.

Detailed building laws relate to land characteristics, land use according to zoning plans, and various land regulations. Landowners should thoroughly study these aspects before beginning construction to avoid future legal problems.

For those considering buying land or already owning land, checking the land's condition should be the first step. Many areas have problems with land being lower than road level or lacking drainage, requiring land filling or excavation to create drainage channels. This must comply with building laws, specifically Section 71 of the Building Control Act, which states:

"The construction or modification of single-family residential buildings with an area not exceeding 1,000 square meters, townhouses, row houses, duplexes, and temporary buildings must show the wastewater treatment system plans for each unit."

This is a mandatory requirement. Land improvement operations must be carried out under the Land Excavation and Filling Act B.E. 2543 (2000), which comprises three main sections:

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– Section 17: Anyone intending to excavate land to a depth exceeding 3 meters from ground level, or with a pit area exceeding 10,000 square meters, or with a depth or area as determined by the local official, must notify the local official using the form prescribed by the local official.

– Section 24: When excavating land to a depth not exceeding 3 meters from ground level, and when excavating near the boundary of another person's land at a distance less than twice the depth of the pit to be excavated, appropriate measures must be taken to prevent soil erosion.

– Section 26: Anyone intending to fill land with a mound height exceeding the level of adjacent land owned by different owners, and with a mound area not exceeding two thousand square meters, or with an area as determined by the local official, must provide adequate drainage to prevent causing inconvenience to adjacent landowners or other persons. The area determined by the local official under paragraph one must not exceed two thousand square meters.

Land filling exceeding two thousand square meters, or exceeding the area specified by the local authority as per paragraph one, requires notifying the local authority of the land filling using the form prescribed by the local authority in addition to providing drainage as per paragraph one.

After preparing the land for a new house, the next step for the houseowner is to obtain permission from the local authority. If the landowner hires a construction company, the company will usually handle this part.

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After obtaining building permits, the next thing to consider is the Building Control Act B.E. 2544 (2001). For self-built houses, the main legal provisions to consider are:

– Section 36: “Open space” means an area without a roof or covering structure. This area may be used for a pond, swimming pool, wastewater treatment pond, garbage disposal area, or parking area located outside the building. It also includes the area of ​​a structure or building that is no more than 1.20 meters above ground level and has no roof or covering structure above that level. The law mandates a minimum setback of 2 meters around the house, from the building to the outer wall/fence.

– Section 50: Buildings constructed or modified near a public road less than 6 meters wide must be set back at least 3 meters from the center of the public road. No part of the building may extend into this setback, except for fences or walls not exceeding 2 meters in height.

– Section 51: For land situated at the corner of a public road that is 3 meters or more but not exceeding 8 meters wide, and has an angle less than 135 degrees, the fence or wall must have a beveled corner at least 4 meters long and form equal angles with the public road. No fence, wall, or part of the building may extend into the beveled corner portion of the land.

– Section 54: Openings, doors, windows, and ventilation openings on the side of a building adjacent to private land. Or, balconies for floors 2 and below, or not exceeding 9 meters in height, must be at least 2 meters away from the property boundary. For floors 3 and above, or exceeding 9 meters in height, they must be at least 3 meters away.

– Section 55: Buildings not exceeding 15 meters in height (approximately 2-story detached houses) must have at least 1 meter of open space around the building, except for residential houses with an area not exceeding 300 square meters. Buildings exceeding 15 meters in height must have at least 2 meters of open space around the building.

– Section 56: For residential houses with an area not exceeding 300 square meters, the wall without openings can be built less than 1 meter from the property boundary. If it is less than 50 centimeters from the property boundary, written consent from the owner of the adjacent land is required.

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After studying these various house construction laws, you can build your house with peace of mind without worrying about future problems.

Before starting construction, you may choose a house plan from a construction company that has designed it to be in accordance with the law.

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Thank you for the valuable information from DD Property.