The 45 degree rule is a well known rule of thumb that a good planner will use to assess the acceptability of rear extensions on older homes. This is often used to ensure that a new building does not dominate its immediate surroundings, and will be of a reasonable size and style. This rule of thumb is also used to avoid overshadowing of the new building on neighbouring properties. The 45-degree rule is most commonly applied to side and rear extensions on larger semi-detached homes. A 45-degree line must be drawn at a midpoint from the nearest inhabitable room on the house. The rule may be relaxed for secondary windows.
The 45-degree rule is not applicable to all areas of the country, although it is used by most local planning authorities. A single-storey extension to a detached home can be considered, whereas a rear extension to a semi-detached dwelling will require detailed planning permission. The 45-degree rule is not the only measure of merit, as some councils enforce a stricter version of this rule of thumb. However, this rule of thumb is the most common.
The 45-degree rule is not as complex as one might think. The rule of thumb is a simple matter of drawing a line from the nearest ground floor window to the middle of the closest occupied space. The rule is best executed by taking into account the allowed development rights of the site in question. The rule of thumb is most often used to determine the height of a rear extension to a semi-detached house, as it can be applied to larger single-storey rear extensions. For example, a front porch can be built to a maximum height of about 2 meters from the road boundary.
The 45-degree rule is not the only rule of thumb to be consulted when determining the acceptable height of a front porch. It is important to note that the 45-degree rule does not apply to hallways, utility rooms, or garages. While the 45-degree rule is a simple matter of taking a gander at the ground floor, it does not take into account the surrounding properties or their individual architectural features, which can sway an officer’s decision. To avoid a kerfuffle, consult with the appropriate departments of the relevant authorities when deciding on the height of a porch or other accessory. The 45-degree rule can be a powerful tool in ensuring that a home’s front yard is a pleasant place to be.
The 45-degree rule has its limitations, but if you are considering extending your home, be sure to consult a reputable home improvement specialist to get the most out of your investment. The best way to do this is to research the various requirements of your specific area, and ask the right questions. This will help ensure that your new addition does not ruin the best aspects of your neighbourhood.
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