Doing A Hip To Gable Loft Conversion In 2023

by | Apr 19, 2023 | House Extension | 0 comments

Hip-to-Gable Loft Conversions: Everything You Need to Know

A Hip-to-Gable Loft Conversion is a popular renovation solution for homeowners with semi-detached & detached properties with sloping roofs. It could be the best way to expand the living space by utilising the unused space at the loft.

Our comprehensive guide covers everything you need to know about Hip to Gable loft conversions, from building regulations and costs to drawbacks. Read on to discover how a Hip-to-Gable Loft Conversion can revolutionise your living space and increase the value of your property too.

What is a Hip-to-Gable Loft Conversion?

Constructing a hip-to-gable conversion is an art. In this conversion, the roof’s slope is enhanced by raising the base of the side slope and stretching the existing ridge to create a striking gable end. That sure creates a unique and eye-catching look. Hip-to-gable conversion is ideal for semi-detached and detached homes, where the extension adds practicality and curb appeal.

This type of conversion is preferred by homeowners who love to keep upgrading their houses, no matter what. Hip-to-gable conversion transforms the dull, cramped attic into a spacious, personalised oasis. A Hip to Gable conversion allows you to add a touch of style and sophistication to your home while meeting your unique needs. Whether you create a serene retreat, a functional workspace, or a workout area, this conversion can help you reflect on your lifestyle and adds value to your property. With a Hip to Gable conversion, your home will feel like a brand-new space that is both functional and aesthetically pleasing.

A hip-to-gable loft conversion can combine with other types to make your home even more special. Exciting, right?

Benefits of Hip-to-Gable Loft Conversions

Let’s dive into the incredible benefits of a Hip-to-Gable loft conversion! The main advantage would be number one – It creates more space, number two – It increases the value of your property. You get more Low headroom to incorporate your desired furniture and create an exciting floor plan. Imagine having the perfect home studio or a relaxing spot to hang out with friends. Hip to Gable conversion is a cost-effective solution to expand your living space without relocating to a larger property. And once complete, the renovation, then you may wonder why you didn’t undertake it sooner.

Hip to Gable Loft Conversion Cost

Adding a Hip to Gable loft conversion to your home can be a significant investment, but the benefits are well worth the cost. The main factors (but not only) that can affect the total cost of a Hip to Gable conversion are:

  • Size of the property
  • Type of conversion (dormers)
  • Quality of materials used 
  • Type of windows used
  • Amount of insulation required
  • Need for additional electrical or plumbing work

The investment required for a loft conversion is typically in the range of £45,000 to £80,000.

Hip-to-Gable Loft Conversion Building Regulations and Planning Permission

The great news is that a Hip-to-Gable loft conversion fall under permitted development rights. These rights allow you to extend your house without the need for planning permissions as long as you follow strict planning permission guidelines. However, we recommend obtaining lawfulness certificates from planning to hold an official document that your development is legal.

Speaking of loft conversions that lie within planning permission, there are some important rules to keep in mind:

  • The size of the loft conversion should be at most 50 cubic metres for a detached house and 40 cubic metres for a semi-detached house.
  • The style of the loft conversion should match the existing design so it blends seamlessly with its surroundings.
  • Maintain the height of the roof at its current level.
  • If the house faces a highway, the extension should not exceed the existing roof slope.

Remember that the glazing should be obscured for side-facing windows, and the opening should be at least 1.7 meters above the floor. Additionally, any extensions should not overhang the outer face of the original wall of the house.

What are the building regulations?

Your loft conversion must comply with building regulations to ensure safety and structural integrity. Building regulations set standards for fire safety, ventilation, and insulation.

  1. Building control approval is separate from planning permission. Even if your conversion falls under permitted development rights, you must still obtain building control approval.
  2. The building regulations depend on factors such as; the loft size, the type of conversion you are undertaking, and the location.
  3. Some building regulations that may apply to a Hip to Gable loft conversion include insulation, ventilation, escape routes, fire safety, and structural stability requirements.
  4. Insulation requirements may include minimum thicknesses for roof and wall insulation and requirements for insulation around dormers and other openings.
  5. Ventilation requirements may include natural and mechanical ventilation provisions to ensure adequate airflow and prevent moisture build-up.
  6. Structural stability requirements may include provisions for ensuring that the existing roof structure can support the weight of the new conversion and any additional loads from things like furniture and people.
  7. Be aware of these regulations to make informed decisions about your conversion and ensure it is safe and compliant.

Is My House Suitable for a Hip-to-Gable Loft Conversion?

The not-so-good news is that not all lofts are perfect for conversion into a liveable space. There are several critical factors you must consider before getting started. These include  

The Height of the Roof

Height is a critical factor to consider when contemplating a loft conversion. The minimum height requirement for a successful conversion is 2.2m from floor to ceiling. In this scenario, lowering the ceiling height of the room below may be necessary, which can be costly and may not even be permitted by your local council. However, every council can have different rules.

Property Location

A hip-to-gable loft conversion is a wonderful idea, that is certain. But you need first to do your research on council rules and regulations. Not every council allows alterations.


At the time of building construction, the builder may not have considered future renovation possibilities. The presence of pipes, ducts, electrical wiring, and even a water tank can create hurdles for loft renovation. Removing these hurdles may be possible but a costly endeavour.

Unlock the Hidden Potential of Your Home with a Hip to Gable Loft Conversion: Design, ROI, and Financing Explained!

Design Options

Now, here’s the most exciting part. How does your new Hip to Gable loft conversion can look super cool? Well, there are many options to decide on when designing your new space. For instance, you can bring some nature into your loft space by adding potted plants with a comfortable chair and enjoy natural lighting from windows. On the flip side, you can install creepy, dim lighting to create a spooky vibe.

Sounds pretty amazing. The possibilities for your new Hip to Gable loft conversion are endless.

For example, consider adding an en suite bathroom or a kitchenette to your loft to create a self-contained living space. 

Insulation and ventilation are crucial when converting your loft. Proper insulation helps keep your loft comfortable year-round and reduces noise from outside. Good ventilation prevents condensation build-up and maintains healthy air quality.


There are a lot of factors that can affect your conversion timeframe. For example, how complex is the design? How big is the loft? And is the contractor available when you need them?

Myriad factors can affect the timeline of a loft conversion project. Some of those are the loft’s size, the project’s intricacy, and the homeowner’s specific prerequisites. A typical loft conversion can take six to twelve weeks to finalise, with larger or more intricate projects taking longer. 

Return on Investment

Did you know that a hip-to-gable loft conversion can be a wise investment for your home? Turning your unused loft into a functioning area can increase your property’s overall worth. According to a report by the Nationwide Building Society, a loft conversion can raise the value of a property by up to 20%! Of course, the actual return on investment can swing on several elements, such as the area of your property, the quality of the transformation, and the demand for housing in your area.

But overall, a hip-to-gable loft conversion can be a wise financial decision that gives you more space to enjoy in your home.

Selection of Contractor

When investing a lot of money to get the best out of your unused space, choosing the right person to do the task is of prime concern. A real pro. Pick someone nice, trustworthy, and good at what they do.

Here are some tips to help you choose the best contractor for your project:

  • Your friends, fam, or colleagues may know someone who has done a project like yours and can tell you about their experience.
  • Check the contractor’s references. You want to ensure they have good grades and have performed the job well on other projects.
  • Get multiple quotes from different contractors. 

By following these tips, you’ll be sure to find a contractor who can help turn your hip-to-gable loft conversion dream into a reality!

Financing Options

Let’s talk numbers now! Imagine you dream of turning your dusty old loft into a beautiful living space, but the cost is holding you back. Don’t worry; there are several ways to finance your hip-to-gable loft conversion project!

Either you can go for a home improvement loan with higher interest rates. Another option is a personal loan, like borrowing money from a bank. 

Also, there are numerous companies out there providing finance plans. For instance, buy now, pay later incredible offers(tailored to your preferences) so you can get your renovation done without the burden of a hefty one-time expense.

However, the most popular option is to remortgage. It’s like giving your mortgage a makeover! You can refinance your existing mortgage and release some equity to pay for the conversion. This option has lower interest rates but takes longer and requires more paperwork. Perhaps it’s time to dig into your savings if you’re keen to get your loft conversion project underway.

Make sure to choose the best financing option for your needs!

A hip-to-gable loft conversion may be the best thing you could ever do to your property. But, it’s crucial to consider potential challenges and drawbacks before starting the process.

Hip-to-Gable Loft Conversion: Potential Challenges and Drawbacks

While the Hip-to-Gable Loft Conversion offers many benefits, such as adding value to your property and creating additional living space, it also comes with potential challenges and drawbacks.

Disruption to Daily Life

The construction process of a hip-to-gable loft conversion can cause significant disruption to your daily life. The construction process can create pretty much noise, dust, and vibrations that might interfere with your routine. But, all is well if the end is well.

Might Not Suitable For You

Another potential challenge is that a Hip-to-Gable Loft Conversion may not be suitable for all properties. The conversion requires a certain amount of roof space and height, which not all properties will have. It’s essential to have a professional survey of your property before embarking on a loft conversion to ensure it is feasible. Don’t overlook the fact that previously unused space likely held a significant amount of your stored belongings, which will now require a designated place to live. 

Maybe A Little More Expensive

A further drawback to consider is the cost. Hip-to-Gable Loft Conversions can be more expensive than other loft conversions, such as Dormer or Mansard. The additional cost is due to the amount of work involved in changing the shape of the roof and installing new roof tiles and supporting beams.


In conclusion, a Hip to Gable Loft Conversion is an excellent way to add more space, style, and value to your home. It’s perfect for homes with sloping roofs and provides more headroom, resulting in more options to design according to one’s specific preferences.

Additionally, it can significantly increase the value of your property, so it’s a savvy investment. While it can be a significant investment, working with a reputable and experienced contractor can provide an accurate and transparent quote for the project.

Follow strict planning permission guidelines and obtain building control approval to ensure safety and compliance. So, if you’re considering a loft conversion and want to transform your home, a Hip to Gable Loft Conversion might just be the perfect solution.

If you’re considering a hip-to-gable loft conversion for your East London or Essex property, Powerpillar is your top choice. With years of experience and a proven track record, Powerpillar’s contractors have the expertise needed to convert your hip roof into a gable, providing you with more headroom and additional living space.

Not only can a loft conversion increase the value of your property by up to 20%, but it can also add up to 30% more living space, making it a wise investment. Powerpillar’s contractors use high-quality materials and follow strict safety guidelines, ensuring your loft conversion is both aesthetically pleasing and structurally sound. 

When it comes to loft conversions, there may be different rules and regulations to follow depending on your location, but Powerpillar can help you navigate these requirements. By observing the surrounding neighbourhood, Powerpillar can give you a good indication of the suitability of your property for a loft conversion. With a commitment to customer satisfaction and attention to detail, it’s clear that Powerpillar is the best choice for hip-to-gable loft conversions in East London and Essex.

Emmanuel Nwaebo

Emmanuel Nwaebo is the Managing Director at Powerpillar Ltd and has more than 25 years experience in building construction and renovations. He has a bachelor’s in Electronics and Electrical Engineering with certification in Construction Health and Safety Technician (CHST). With an experience in managing construction and renovation services for years, he is extremely passionate about property management and loves helping people find their dream property.

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