Using Cantilevering in Modern Home Designs

Jigsaw • 1 March 2023

What is a cantilever?

A cantilever is a rigid structural element that extends horizontally and is supported at only one end. Typically, it extends from a flat vertical surface such as a wall, to which it must be firmly attached. Like other structural elements, a cantilever can be formed as a beam, plate, truss, or slab.

Building an extension in this way requires a dedicated team of architects or designers, structural engineers, and builders so that the execution is perfect from design to completion.

Rooted in physics and structural design, cantilevered additions are a great way to add more living space to your home and open up the rooms around the outer segments of a floorplan. Below are a few of the benefits that cantilevered additions and remodels have to offer.

Add More Living Space

Cantilevered additions can allow you to completely elongate a space without having to do the same thing to every level of the home. For example, if you wanted to elongate the main room on the second floor of your cottage overlooking the water, a cantilevered addition could be a great fit. Combined with floor-to-ceiling windows, this style of addition would provide gorgeous views.

Create Architectural Interest

Cantilevered additions create a unique architectural interest, both in the interior and exterior of the home. Cantilevered additions are most often associated with modern home design but can work well under a variety of conditions and with a diversity of home styles.

Cantilevered Micro-Addition

A cantilevered micro-addition, or a cantilevered bump-out, allows you to add a little more space to a room without having to undertake foundation work and, therefore, it’s a more cost-effective solution for more living space. A great option if your property hosts mature trees where the roots would otherwise be disturbed if you had to dig an extended foundation.

These bump-outs are prime for creating a new counter/storage space in the kitchen and creating a perfect spot for a wall installation or entertainment unit in the main living room, for example.

Cantilevered kitchen counters, bathtubs and furniture are growing in popularity as homeowners continue looking for ways to personalise a space.

This dramatic kitchen island features a mahogany wood top with a long steel support underneath that is wedged a few feet into the concrete island. It can be used for several purposes, including dining, food preparation, reading or kids’ homework. It’s also a good example of accessible design since a wheelchair can glide right up with no obstacles.

What to consider

Renovation difficulties

Since this style of extension is hanging in mid-air, not all homes will be able to incorporate them into their architecture. The dimensions of your home will dictate the size and shape of your cantilever. Make sure you consider this before drawing up those plans for this project.

Design

How far your design will be able to protrude will depend on construction. There are three main areas your designer will need to consider:

· The load above — how much weight is on top of the supported section of the structure?

· The anchor point — how is the cantilevered structure connected to the other elements of the building?

· The materials you plan to use and their strength.

Having a good structural engineer on your project is essential. Their job will be to make the structural calculations that will allow your builder to create a safe and legal result. These structural details will be checked by building control to make sure your project is compliant with the Building Regulations.

Cost

A cantilever will increase costs in comparison to a 'regular' extension, so calculations on budget must be made before any work begins. As cantilevered structures are more technically ambitious than most other features, you should be prepared to pay a premium if you want to include them in your design. The additional extension cost using a cantilever will include the steel beams, reinforced concrete and other expensive materials required. However, the value added by a good cantilever design can far outweigh the cost in terms of how you use the property and in property sale.

At Jigsaw Construction Surrey, we have a team of people to manage your project from start to finish. Get in touch to find out more hello@jcs-ltd.co.uk.

by Lisa Woolnough 2 April 2025
Thinking of Knocking Through? Here’s What You Need to Know! 🔨 Benefits of Knocking Through for a Kitchen-Diner: ✔ More space & a better flow ✔ A brighter, airier home with more natural light ✔ Perfect for entertaining – cook & chat with guests easily ✔ Adds value to your property ⚠ Things to Consider: 🔎 Is the wall load-bearing ? You may need structural support 💷 Budget for potential plumbing & electrical work 🏗 Be prepared for dust & disruption – but it’s worth it! A kitchen-diner knock-through can completely transform your home! Could it work for you? Read more in our blog: www.jcs-ltd.co.uk/blog #KnockThrough #HomeRenovation #KitchenDiner #OpenPlanLiving Why Choose JCS Ltd? At Jigsaw Construction Surrey Ltd , we bring expertise, quality craftsmanship, and a commitment to customer satisfaction . Our experienced team ensures your home improvement project is completed on time, within budget, and to the highest standards. With a proven track record in renovations, extensions, and bespoke building projects , we’re the trusted choice for homeowners looking to enhance their living spaces. We specialise in: Home extensions and renovations Kitchen and bathroom refurbishments Garden landscaping and patios Loft and garage conversions New build and custom projects Ready to Get Started? If you’re considering a home renovation or construction project this year, now is the perfect time to get in touch. Contact us today via www.jcs-ltd.co.uk to discuss your ideas and secure your spot with trusted local builders before our schedule fills up!
by Gary Newell 1 March 2025
If you're thinking about a home renovation , house extension , or garden landscaping project this year, now is the time to act. March is the perfect month to start the planning process and get your project booked in before the summer rush. Here’s why: 1. Avoid Peak Season Delays As the weather warms up, more homeowners start planning their building projects . By securing your spot in March, you get ahead of the crowd and avoid long wait times. Builders’ schedules fill up fast , and delaying could mean pushing your project back by months. 2. Better Availability of Skilled Trades During peak season, high demand can make it harder to secure top-quality tradespeople . Booking in March gives you access to the best professionals before their calendars are fully booked. 3. Take Advantage of Mild Weather Spring brings better weather conditions for construction work compared to the unpredictability of winter or the intense heat of summer. Getting started in March allows for steady progress with fewer weather-related interruptions. 4. More Time for Planning and Permits If your project requires planning permission or building regulations approval , starting now ensures you have enough time for paperwork and approvals without causing delays. 5. Lock in Prices Before They Rise Building material costs fluctuate throughout the year, and demand-driven price increases are common in peak season. By booking in March, you can secure current pricing on home improvement projects and avoid potential cost hikes. 6. Enjoy Your New Space Sooner Whether it’s a new kitchen renovation , an outdoor patio , or a loft conversion , starting early means your project will likely be completed in time for summer, so you can enjoy your upgraded living space when it matters most. 7. Why Choose JCS Ltd? At Jigsaw Construction Surrey Ltd , we bring expertise, quality craftsmanship, and a commitment to customer satisfaction . Our experienced team ensures your home improvement project is completed on time, within budget, and to the highest standards. With a proven track record in renovations, extensions, and bespoke building projects , we’re the trusted choice for homeowners looking to enhance their living spaces. We specialise in: Home extensions and renovations Kitchen and bathroom refurbishments Garden landscaping and patios Loft and garage conversions New build and custom projects Ready to Get Started? If you’re considering a home renovation or construction project this year, now is the perfect time to get in touch. Contact us today via www.jcs-ltd.co.uk to discuss your ideas and secure your spot with trusted local builders before our schedule fills up!
by Gary Newell 2 February 2025
When it comes to renovations, extensions, or any other significant building works, one of the most important things to consider is whether you need planning permission. In the UK, planning regulations are in place to ensure that development is safe, sustainable, and in keeping with the local environment. Whether you’re looking to extend your home, convert your loft, or build a new structure, it’s crucial to understand when planning permission is required and how to go about securing it. What is Planning Permission? Planning permission is the formal approval you need to carry out building works or change the use of land or buildings. It’s granted by the local council or planning authority in the area where your property is located. In general, planning permission is required for larger projects or works that could affect the surrounding area, but there are some exceptions, particularly with smaller, less invasive projects. When Do You Need Planning Permission? Certain types of works, particularly those that alter the structure or external appearance of a property, will typically require planning permission. Here are some common projects that may need approval: 1. Extensions and Loft Conversions Adding extra space to your home, whether through an extension or loft conversion, is a common reason for needing planning permission. There are specific rules on how far you can extend your property and how the extension should blend with the existing structure. 2. Conservatories While small conservatories may be covered by permitted development rights (which allow certain works without needing permission), larger conservatories, or those that extend into the boundaries of your property, will usually require full planning permission. 3. New Builds and Major Alterations Any new build or major structural changes to a property, including changing the layout or converting commercial properties into residential homes, typically require planning permission. 4. Changes to the External Appearance If you’re changing the appearance of the building by altering windows, doors, or the roofline, you may need permission. This is especially the case for listed buildings or properties in conservation areas. 5. Garden Structures Sheds, greenhouses, or other garden structures can also require permission if they exceed certain size limits or are placed in prominent locations. 6. Swimming Pools The construction of swimming pools or other large garden buildings may also require planning permission, especially if they affect the overall aesthetic or drainage of the property. What Are Permitted Development Rights? In many cases, small-scale works such as some types of extensions or conservatories can be carried out without the need for planning permission, under what’s called "permitted development." These rights allow homeowners to make certain changes to their property without applying for full planning permission, if they comply with specific restrictions. However, there are many conditions that govern permitted development, including: - Size limits for extensions or additions - Restrictions based on the location and position of your property (e.g., proximity to boundaries or listed status) - Limits on the height and depth of structures - Restrictions in areas such as conservation zones Before carrying out any work under permitted development, it’s essential to double-check whether your property qualifies and whether the work falls within the legal parameters. How to Apply for Planning Permission If your project requires planning permission, here’s a general guide to help you through the process: 1. Consult Your Local Planning Authority The first step is to contact your local planning authority (LPA). They will provide guidance on whether your proposal requires planning permission and what rules apply in your area. 2. Prepare Your Application You’ll need to provide detailed plans of the proposed works, including drawings and descriptions of the changes. You may also need to submit additional documents, such as site surveys, design and access statements, and environmental impact assessments. 3. Submit Your Application Applications can be submitted online through the Planning Portal or directly to your local authority. The cost of the application varies depending on the type and scale of your project. 4. Wait for a Decision Once your application is submitted, the local planning authority will assess it. This process usually takes about eight weeks for most applications. However, complex projects may take longer. If your application is approved, you’ll receive formal planning permission. If it’s refused, you have the right to appeal. 5. Building Regulations Approval Even if you get planning permission, you will likely need to submit your building works to building regulations approval, which ensures the construction meets health, safety, and energy efficiency standards. What Happens if You Don’t Get Planning Permission? Carrying out building works without the necessary planning permission can lead to fines, legal action, or even the requirement to undo the work. If you’re unsure about whether you need planning permission, it’s always better to ask before starting. There may also be penalties for failure to comply with other legal requirements, such as not following the right building regulations. Jigsaw Construction Surrey Ltd: Your Planning Partner Jigsaw Construction Surrey Ltd offers comprehensive project management services to streamline your building projects. From assessing whether planning permission is required to handling the application process, we ensure a hassle-free experience. With our expertise, you can confidently navigate complex regulations and focus on your vision, knowing that every step is professionally managed. We work closely with local authorities, ensuring all submissions meet the necessary standards and guidelines for a successful outcome. Get in touch to discuss your next construction project!
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