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Joey van der Hart
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Joey van der Hart
Call now 06 - 29 08 07 57
Roof extension for a complete extra floor on your home
Do you want to create significantly more living space without sacrificing garden area? With a roof extension, you make use of the space on top of your home and can realize a complete extra floor. Ideal for extra bedrooms, a bathroom, a home office, or a combination of these.
Van Der Hart Timmerwerk handles your roof extension from the structural preparation and construction to the carpentry and finishing. We carefully examine the existing home, coordinate the work, and ensure that you have a single dedicated contact person throughout the entire project.
- Custom roof extension
- Construction and carpentry within a single project
- A single point of contact during construction
- Clear agreements regarding planning and execution
More living space without building larger in your garden
You like where you live, but the number of rooms is starting to feel cramped. Perhaps the children need their own bedrooms, you want to be able to work from home, or there is a lack of space for an extra bathroom. Adding a storey to your home can then be an interesting alternative to moving.
With a rooftop extension, you add living space on top of the existing house. This allows you to utilize a part of the home that does not yet exist, while preserving your garden and the existing living space on the ground floor.
Adding an extra floor to a home certainly requires sound structural preparation. The existing structure must be able to support the new load, and the stairs, layout, natural light, and utility connections must be integrated logically. Therefore, we first examine the home and your wishes before determining which execution fits best.
What can you create with a roof extension?
Every home and living wish is different. That is why we do not build from a standard solution, but look at the space you want to create and how it best fits your home.
Extra bedrooms
A rooftop extension can provide space for one or more full-sized bedrooms. This allows you to adapt a home that is starting to feel too small to a changing family situation, without having to move.
Bedroom with bathroom
Would you like to turn the new floor into a private sleeping area? Then, depending on the available space and technical possibilities, room can be made for a bathroom in addition to a bedroom. We will look at a practical layout and the connection of pipes and installations to the existing home.
Workspace or hobby room
An additional residential floor can also be set up as a quiet workspace, studio, gym or hobby room. Because this space is located on a separate floor, it creates more distance from the hustle and bustle in the living room and kitchen.
Multiple rooms on one floor
With sufficient surface area, the rooftop extension can be divided into multiple rooms. Think of two bedrooms with a landing or a combination of bedroom, office, and storage space. In doing so, we look not only at the number of square meters, but primarily at a layout in which the available space is utilized efficiently.
An extra floor with plenty of natural light
Windows and window frames largely determine how the new floor will soon feel. By carefully considering the position and dimensions of the facade openings in advance, we create daylight and views without the roof extension becoming disproportionate to the existing home.
A roof extension designed for your home
Building a house is always custom work. Not only because every home has different dimensions, but above all because the existing load-bearing structure determines the possibilities. That is why we look in advance at the construction, roof shape, and the way in which the new floor can be connected to the house.
Next, we look at the use of the new space. Where will the stairs go? How do we divide the rooms? Where do windows make the most sense? And what facade and roof finish suits the home? By making these choices cohesively, an extra floor is created that does not feel like it was just slapped on top later.
We can also handle a lot of the finishing touches ourselves. With our own carpentry we ensure that structural connections, finishings, and custom details fit together neatly.
Roof extension or dormer window: what fits your spatial needs?
Both a roof extension and a dormer window provide more usable space upstairs in the house, but their scale and result differ quite a bit.
A dormer window expands a part of an existing floor. You locally create more headroom, floor space, and natural light, while most of the existing roof is preserved.
With a roof extension, a much larger part of the roof is modified or a complete extra residential floor is built on top of the house. As a result, you can create considerably more living space and, for example, realize several new rooms.
Do you mainly need more space within an existing attic? Then check out our options for a custom dormer. If you want to structurally add a complete floor, a roof extension fits your plans better.
What customers say about us
A rooftop extension is a major renovation where you want to be able to rely on clear agreements, careful execution, and good coordination throughout the entire project. That is why we like to let our customers tell you themselves how they experienced the cooperation with Van Der Hart Timmerwerk.
From existing roof to a complete new residential floor
Having a roof extension installed is a structural renovation that temporarily involves literally working on the top of your home. The existing roof must be modified or partially removed, after which the new supporting structure, walls, and roof structure are built and made wind- and watertight.
That is why a proper sequence of work is important. Van Der Hart Timmerwerk keeps an overview of the construction and carpentry work and ensures that the various parts fit together seamlessly.
- Preliminary construction work
- Modifying or removing parts of the existing roof
- Constructive work and supporting structure
- Building the new walls and roof structure
- Insulating roof, facades and connections
- Installation of window frames, windows and doors
- Building and connecting the stairs to the new floor
- Roof and facade finishing
- Carpentry and custom work
- Interior finishing of the new residential floor
Would you like to renovate other floors or rooms at the same time? Then we can see if we can combine the rooftop extension with a complete renovation of your house.
Online
Joey van der Hart
Call now 06 - 29 08 07 57
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What does it cost to have a roof extension installed?
The cost of a roof extension can vary greatly. The surface area is not the only factor. Above all, the existing structure and the modifications required to safely support the new living layer have a major impact on the work.
In addition, the layout and finishing make a big difference. An open floor with a simple layout requires something different than an extra floor with multiple bedrooms, a bathroom, large window frames, and extensive custom work.
That is why we prefer not to work with a general starting price that says little about your situation. We inspect the home, discuss the space you want to create, and then outline the necessary structural and construction work. Based on that, you will receive a customized quote.
What are the costs of a roof extension determined by?
The final investment is determined, among other things, by:
- The surface area and height of the roof extension
- The existing supporting structure of the home
- Required structural reinforcements
- The type and shape of the new roof structure
- The layout of the extra floor
- The stairs and connection to the existing floor
- The number and size of frames and windows
- The chosen roof and facade finishing
- Insulation and material choices
- The desired level of interior finishing
Do you need a permit for a rooftop extension?
If you want to install a rooftop extension, you will have to deal with the rules from the Environment and Planning Act. Which permits, notifications, or other obligations apply to your plan depend, among other things, on the house, location, and execution of the rooftop extension.
In addition, a roof extension structurally alters and enlarges the existing home. Therefore, it is necessary to examine carefully in advance what is structurally feasible. Depending on the plan, architectural drawings and structural calculations may be required, among other things.
Via the Permit check of the Environment and Planning Portal can you check which rules apply to your address and whether you need to apply for a permit, submit a notification, or provide information. We will discuss during the preparation which steps are necessary for your project.
See what we made for others
No project is the same, so we always deliver custom work. From complete renovations to refined patio roofs and custom woodwork projects: view a selection of our work and get inspired for your own plan.
This is how we build your home up step by step
An extra floor begins long before the existing roof is opened. First, we map out your wishes and the home. Then, we determine what preparation is needed for the construction, layout, and execution. This allows us to properly prepare the moment work begins on the roof and ensures you know in advance what to expect during every phase of construction.
Step 1 – Application and introduction
You let us know what you have in mind, big or small. We will contact you to discuss your wishes, ideas, and expectations.
Step 2 – Site Visit
We will visit you to inspect the home and the available space. This gives us a clear picture of the current situation and allows us to provide targeted advice on the possibilities.
Step 3 – Proposal and non-binding quote
Based on your wishes and the situation, we will create a clear proposal. You will receive a non-binding quotation in which the discussed work is clearly described.
Step 4 – Design and preparation
Following approval, we will elaborate the plans further. We will coordinate the construction, materials, schedule, and necessary preparations with you, ensuring everything is clear before we start.
Step 5 – Construction and finishing
Our team realizes the expansion and ensures that the various activities are well-coordinated. During execution, we will keep you informed of the progress.
Step 6 – Delivery
Upon completion, we will review the work together. We will check the execution, discuss any points of attention, and ensure a neat delivery of the new space.
Why have your home built by Van Der Hart?
When adding a rooftop extension, you are not only working on a new floor, but also on an important structural component of the existing home. The roof is modified, the new load must be transferred safely, and the connection between old and new must be correct both structurally and in the finishing.
Van Der Hart Timmerwerk combines construction work with craftsmanship in carpentry and custom work. As a result, we can execute many components within a single project and keep an eye on the end result down to the details.
We build rooftop extensions and other construction projects across a large service area surrounding Amsterdam, Haarlem, and Utrecht. From the initial consultation to final delivery, you will have a single dedicated point of contact, and we make clear agreements regarding the preparation, schedule, and execution of your rooftop extension.
This is why customers choose Van Der Hart Timmerwerk:
- Craftsmanship in construction and carpentry
- A roof extension completely tailored to your home
- An eye for both construction and finishing
- Various activities within a single project
- Clear agreements and direct communication channels
- A single point of contact from preparation to delivery
Frequently asked questions about a roof extension
Can a rooftop extension be built on a flat roof?
Yes, a flat roof can be suitable for a rooftop extension. In this case, a new living level can be created on top of the existing home. Whether this is possible for your house depends, among other things, on the load-bearing structure, foundation, and local regulations. A flat roof is a common scenario for a rooftop extension.
Can a rooftop extension also be built on a pitched roof?
Yes, a roof extension may also be possible for a home with a pitched roof. Consider, for example, raising the ridge or a larger modification that changes the shape of the existing roof. Which solution is possible depends on the construction of the home and the regulations that apply to the property.
Can every home support a rooftop extension?
No, that must be assessed per property. An extra floor causes additional load on the existing structure. Therefore, it must be determined in advance, among other things, regarding the load-bearing walls, structural framework, and foundation. Sometimes structural reinforcements are necessary before a rooftop addition can be installed.
How long does it take to install a roof extension?
The construction time varies by type. The surface area, construction method, required structural adjustments, and level of finish all play a role. It also makes a difference whether a rooftop extension is largely prefabricated or built entirely on-site. Therefore, we create a schedule for the specific project before starting. Construction time is also a recurring topic on current rooftop extension pages.
Where does the staircase go in a rooftop extension?
The position of the stairs is an important part of the design. The stairs must connect logically to the existing floor without taking up an unnecessary amount of usable living space. That is why we look at the best position for the stairs, landing, and layout of the new floor at an early stage.
More plans for your home?
Are you planning to tackle other parts of the house besides the roof extension? Van Der Hart Timmerwerk can combine various construction and carpentry work within a single project.
Dormer
Creating more headroom and daylight within your existing upper floor.
More information
Home remodeling
Combining the new residential floor with modifications to other spaces in the house.
More information
House renovation
Renovating existing parts of the home and improving them technically or practically.
More information
Carpentry
Custom work for structural components, finishings, and other wooden details.
More information