HomeHow Much Do Plans Cost For An Extension?

How Much Do Plans Cost For An Extension?


Building an extension on your home is a great way to add some extra living space and raise the property value of your home. However, these benefits don’t come without investing. Before beginning any construction project, it’s essential to have a clear understanding of all the costs associated with your project to ensure everything runs smoothly.

In this blog post, we’ll break down all the different factors that can affect the cost of building an extension and find out how much do plans cost for an extension. Once you’ve reviewed these factors, you’ll have a much better idea of the budget you’ll need to complete your home extension project.

So How Much Do Plans Cost For An Extension?

If you are thinking about building an extension on your home, it’s best to get in touch with a skilled architect. Architects will be able to draw up extension plans for your project and give you insight based on their experience for the best options when working on your project. There are several factors which will affect the cost of hiring an architect.

Some architects may charge a fixed fee for extension plans, while others charge an hourly rate. Most commonly, architects will charge a percentage of your project’s total cost. The percentage an architect may charge will also depend on the scope of your extension. For a simple and smaller extension, architects may typically charge between 8 and 15 percent of the total project cost. For a larger complex extension, architects may charge up to 20 percent.

Although this might seem like a high fee, consider the value architects add to your extension project when creating an extension plan. When you partner with an experienced architect you can end up saving a lot more money by avoiding common mistakes or any legal fees. Architects can also make the most out of your construction budget and even source cost-efficient materials. When working with an experienced architect you are more likely to achieve a high-quality design, which can also result in an increase in the value of your home.

Other Fees Associated With Building An Extension:

The final price of your home extension will depend on a number of factors. Here are a few of the most common factors you can expect to impact the cost of your home extension:


The type of materials you use for your home extension will have one of the biggest impacts on the overall cost of your project. You can always look out for budget-friendly options or speak with your architect if costs begin to overwhelm you.


The location of your home can also influence the final cost of your extension. If you live in a populated area like London, costs are typically higher, so expect to pay more for the final cost of your home extension versus some in a different location.


The cost of labour will always play a huge part in the final price of your extension. Remember that the more complex your extension the more labour that will be required, thus increasing the price. You can always help keep costs down by trying to do some of the work yourself or simplifying the extension.

Determining The Final Cost Of Your Extension Plans

Adding an extension to your home is a big decision and having a clear understanding of how much you can afford to spend, will help to keep your project on track.  Working with a skilled Architect is one of the best ways to get an accurate estimate of the costs associated with your extension.

Hopefully, you now have a clear understanding of how much plans may cost for an extension. If you are looking for a professional architect? Get in touch with specialists  Happinest today.

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