Frequently Asked Questions

Planning to convert your loft but overwhelmed by doubts and uncertainties? We at Loft Conversions Wales understand that preparing for a loft conversion project isn’t easy, but we are here to help you through. We thought it would be helpful to show you some of the most asked questions to help you on your journey and plan your dream loft conversion.

The big 4

Most of the loft conversion costs around £30,000 to £50,000. It depends upon the size and type but most especially upon the structure and the work required. We will be able to give you a more accurate quote once you decide to have an on-site survey with us.

The head height requirement is 2.2 metres between the top of the floor joist of the loft to the bottom of the ridge beam.

Yes! A recent Guardian report stated that an extension or loft conversion could increase your property’s worth up to 22% or £42,700. This is because buyers are ready to pay for extra usable space because it could mean better accommodation.

Planning permission is not usually required for a loft conversion. However, it is subject for compliance with permitted development limits and conditions.

You can determine if your space is convertible by measuring the ridge height. However, the best way is to get a loft specialist to survey your property.

Haven’t found the answer to the question that’s bothering you? We would be happy if you’d give us a call or email to answer your questions and give you more helpful loft conversion tips.


It takes 4-6 weeks to complete a Velux loft conversion while Dormers take 6-8 weeks.

If the plans, structural designs and party walls are agreed and approved, the construction is estimated to start in 2-4 weeks. But if these are not yet in place, it may take longer.

It could take 4-5 weeks to for clients to approve a set of plans from the contract signing. However, we are doing our best to make the process faster and to provide customer satisfaction.

Plans for loft conversion might take eight weeks to be approved, but if the approver advises some revision, approval may take longer.

After carrying out the loft conversion site survey, it will take at most one week for you to receive an accurate and comprehensive quotation via email. If you haven’t received an email from Loft Conversion Wales, please check your junk email or spam folder or simply give us a call.


Flats and properties located outside the conservation area have permitted development rights. This means that loft space can be developed without needing an application for planning permission. However, it is subject to certain limits and conditions, including the following:

Terrace houses must have a volume allowance of 40 m3 of additional roof space.
Detached and semi-detached houses must have a volume allowance of 50 m3 of additional roof space.

An application for planning permission is used to ask the council if your proposed scheme is acceptable. It can be rejected if it doesn’t follow the local development plan. A permitted development, on the other hand, is to ask the council to confirm if your scheme passes the permitted development criteria. The board will issue a Lawful Development Letter to confirm, but you can start work without waiting for the letter.

The party wall agreement is a settlement agreement needed if your home has a wall that is connected to another person’s property. Each of the neighbours must be informed about the proposed works using the party wall notice. It should be done at least two months before the construction starts.

The party wall is created to avoid any issue between you and your neighbour that may arise due to the work proposed on the party wall. It draws up a written agreement to prevent possible conflicts. Based on the law, the neighbour can insist on having one before the work starts. We can guide you through the process and help you to get in touch with our certified party wall surveyors if deemed necessary.

Here at Loft Conversion Wales, we provide complete loft conversion services from planning, building regulations, structure, stairs, Velux windows, dormer windows, insulation, plastering, heating, plumbing, bathroom fitting, electrical work (Part P) and woodwork etc.

However, if you would personally prefer to do or manage some second fix (or the secondary elements) yourself to save money, we would be happy and willing to tailor a package that will suit your needs.

If you have any inquiries regarding the requirements, you can give us a call.

Yes. Steel beams help hang the new floor and to take the load of the roof. Aluminium and timbers can be an alternative for steel too.

However, if you would personally prefer to do or manage some second fix (or the secondary elements) yourself to save money, we would be happy and willing to tailor a package that will suit your needs.

If you have any inquiries regarding the requirements, you can give us a call.

It is plausible to carry out the construction of a loft conversion without the Building Notice, but it is not advisable as this could result in different issues. As a professional and ethical loft conversion company, we want to carry out the operation in subjection to the law.

So, we wish to submit full plans to the Local Authority before the works commence. It means that the Local Authority has agreed to the technical specifications of the loft conversion and they have carried out site inspections while the work is in progress so we can ensure that every detail fully meets with Building Regulations.

We are giving a 10-year guarantee to the main structural elements of your loft conversion.

Anyone can build their own loft conversion IF they seriously know how to. However, if not, then, your loft conversion might cost you more instead of saving some pounds.

If you’re not confident, though, we would be happy to help you. We are professionals, but it often takes us up to 6-8 weeks to complete a loft conversion working Mondays to Fridays! So if you’re planning to do it alone, imagine how long you’re going to take to complete it if you can only spare evenings and weekends. So, hiring a loft conversion company sounds completely reasonable!

Loft Conversion Wales is here to help you carry away the back pains of this project so call us so that we can help you plan your dream loft.

YES! Installing smoke detectors is essential to comply with Building Regulations. It must be installed on the Hall at the ground floor and the landing of the 1st and 2nd floor.

Standard two story-properties need fire doors to be placed at the top or bottom of the stairs from 1st floor to the loft. All the doors of the 1st-floor landing, which lead to habitable rooms (not bathroom, airing cupboard, cloakroom, etc.) also need fire doors. It is also necessary on all entries of the entrance passage which lead to habitable rooms (living room, dining room, kitchen, etc.)

If you have hot water tanks, we can move it into the eaves of the loft out of the way. You can get a local plumber to pay them for labour. There’s another alternative that you can use to get rid of water tanks too- the pressurised boiler. You can get a quote for this from your local Gas Safe engineer.

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