Norman Drive , Old Catton, Norwich, Norfolk.
Approved Development: Single storey rear extension granted prior apporval under the Governments larger home extension scheme.
Following initial discussion with the client iit was decided to allow for a single storey modern extension to the rear to allow for an dinning room and create a larger open plan area for the family to use. The plans were submitted to Broadland District Council and Prior Approval was granted under the Neighbour Consultation Scheme that allows for larger home extensions without the need for full approval subject to you meeting certain criteria in terms of size and materials.
If you would like to read more about this scheme and how we can help you please go to our Prior Approval Home Extension page.
Will I Need Planning Permission for my Extension?
Planning consent may or may not be required for your proposed extension. Under the Permitted Development Rights system a large number of home extensions can be built without the requirement of planning permission.
You can extend a detached dwelling by 8m to the rear if it’s single storey or 3m if it’s double.
There are height restrictions. A single storey extension not being higher than 4m in height to the ridge and the eaves, and ridge heights of any extension not being higher than the existing property.
Two storey extensions must not be closer than 7m to the rear boundary.
It must be built in the same or similar material to the existing dwelling.
Extensions must not go forward of the building line of the original dwelling.
Side extensions must be single storey, maximum height of 4m and a width no more than half of the original building.
In Designated Areas side extensions require planning permission and all rear extensions must be single storey.
An extension must not result in more than half the garden being covered.
You can only do it once and the original building is either as it was on 1st July 1948 or when it was built. In Northern Ireland it is as it was built or as it was on 1st October 1973.
You should bear in mind that if your house is in a Conservation Area or a National Park, the amount of work one can do under Permitted Development is usually reduced.
Your local authority has the power to remove Permitted Development Rights if it feels the character of the area wll be threatened by any new work. If in any doubt, you should check with your local authority planning department.
If you are doing an extension that will need planning permission, it is wise to pop into your local planning office to find out informally what might be permitted — especially if you are planning anything out of the ordinary. It is always wise to research the local planning policies so that you will be aware from the start that an uphill struggle awaits you if you plan anything too exotic in the area where your house is situated.
All alterations to listed buildings, including internal ones, require consent and it is a criminal offence to alter a listed building without this consent. With a listed building the planners will always regard the existing property as more important than what you are proposing to add to it. Any extension will therefore have to respect the flavour, appearance and historic material used in the construction of the original house.
Depending on the size of the extension you propose, you might need planning permission as well as listed building consent to make your alterations.
Regardless of whether your new extension does or does not require planning permission, it will need Building Regulations Approval. Building regulations are rules approved by Parliament laid down to ensure the minimum design and construction standards are achieved. These cover all manner of subjects such as fire and other forms of safety, insulation, the drainage system, and access.
Building control officers do not supervise work on your behalf. Their role is to ensure the minimum standards of the building regulations have been adhered to.
To meet Building Regulations you either:
Send what is called a Full Plan Submission to your local authority. In this case you pay a fee and the building inspector visits the site at the various stages of the build and inspects the work as it proceeds.
Submit a Building Notice. This is a statement in which you inform the council that you will be complying with the regulations in building your extension and gives the building control department 48 hours notice of your intention to start the work. Surveyors will come and inspect the work at various stages and will advise you of any problems.
The second method carries an element of risk because you do not have the benefit of an approved plan to work to and the building control surveyor may only know after you have contravened a regulation requirement. It could therefore prove to be an expensive way to build if problems are discovered that have to be rectified.
How to Design an Extension
Many people design their own extensions, using structural engineers for advice. Others use a design and build company who can take on the whole project.
The advantage of hiring a professional to do the design work, is that they might be able to visualise the space in a way that you had not thought of due to overfamiliarity with the existing layout of your home. It is also advisable to work with a professional designer with experience in the area if you are extending a listed home or a home in a Designated Area.
Converting Your Garage
A well-thought out garage conversion can add as much as 10% to the value of your home. Expect to pay between £5,000 and £8,000 for converting the average single garage, making it one of the most cost effective ways to improve your property’s resale value. An additional benefit is increased living space without incurring the costs and inconveniences of moving house.
Below, you’ll find the information needed to plan and carry out your garage conversion:
Design and space planning
Insulation and damp proofing
Plumbing and wiring
Pros and cons
Design and Space Planning
At five metres long by two and a half metres wide, the internal space of most garages is longer and thinner than most rooms in a house. To achieve a more natural shape, consider using stud or block walling to convert the garage into two rooms, typically a toilet, shower or storeroom.
Consider also how you plan to use the rooms, and either make some drawings yourself or get some made.
Planning permission is unnecessary if you don’t plan to alter the structure of the building, so a garage conversion is permitted in most circumstances. However:
If you live in a Listed building or a Conservation Area, planning permission may be required for even minor modifications.
Some new build homes were built with a condition requiring the garage to remain as parking, so an application to remove it becomes necessary.
Standalone garages are more likely to require ‘change of use’ planning permission when converted to habitable rooms.
The change of use from a garage to a habitable room will mean compliance with Building Regulations, including delivery of a building notice to your council. Building Regulations apply to:
As a result, almost any design decision must take them into account. For example:
When you divide up the garage, a new room is created. This room is subject to a set of Building Regulations that require an escape route and ventilation separate from the main room.
Alterations such as an infill wall replacing the original garage door will also be subject to Building Regulations concerning the foundations.
The building inspector will want to visually inspect windows, doors, fireproofing and foundations before he or she gives a certificate of completion.
Once the building inspector is satisfied, the completion certificate should follow within 28 days. It is often much sooner.
Please contact us for a free no obligation consultation. We look forward to talking through any proposals you may have.
34 Queen Elizabeth Avenue
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- Simon Smith: Director: Director