Loft Conversion Drawings


You can perform certain types of work without needing to apply for planning permission directly. These are called “permitted development rights”. You can apply for certificate of lawfulness to ensure that your property has permitted development rights and to ensure future buyers that the extension was done lawfully.

Loft Conversion Drawings from £198

A loft conversion for your house is considered to be permitted development, not requiring an application for planning permission, subject to the following limits and conditions:

  • A volume allowance of 40 cubic metres additional roof space for terraced houses*
  • A volume allowance of 50 cubic metres additional roof space for detached and semi-detached houses*
  • No extension beyond the plane of the existing roof slope of the principal elevation that fronts the highway
  • No extension to be higher than the highest part of the roof
  • Materials to be similar in appearance to the existing house
  • No verandas, balconies or raised platforms, however juliet balcony should be fine!
  • Side-facing windows to be obscure-glazed; any opening to be 1.7m above the floor
  • Roof extensions not to be permitted development in designated areas**
  • Roof extensions, apart from hip to gable ones, to be set back, as far as practicable, at least 20cm from the original eaves
  • You will need minimum 2m head height from the floor to the ridge of the roof.

If you are looking to create extra space in your house, loft conversion is definitely a good idea. You can go for a rear dormer loft drawings, a full hip to gable conversion (usually in semidetached houses), simply adding sky lights to your loft for an internal loft conversion. We at Cadhauz can help you with all the architectural and building regulation drawings and make this process for you as simple as possible.  


In most cases, your property will not need planning permission for a loft conversion unless it is in a conservation area or you live in a first floor flat and the ground floor is owned by some one else. You can check more rules and regulations on common projects area of    If you live in a semi-detached house the maximum dormer volume you can add to your loft should be within 50 meter cube in volume. However, if your house is non-detached the volume that can be added should be within 40 meter cube.   All the architectural drawings should inculcate all these details as per your project, when you are applying for the certificate of lawfullness under permitted development.  The lawful development certificate is a written confirmation from the council that you can build without Planning Permission. In most cases, loft conversion plans weould not require planning permission these days, but you would need Architectural Drawings in order to get the ceertificate of lawfulness or even for your builder to work with.



Architectural Drawings are a requirement for producing full Building Regulations and Structural Drawings.    So you would need Architectural Plans and Building Regulation/Structural Drawings to get started. Your loft conversion plans will definitely need Building Regulations Approval by either your Council or an Approved Private inspector. Some builders usually work with private insoectors and you can avail there services or you can use the services of your Local Authority. The fees quoted are almost the same. 


In order to get started we can help you with Loft Conversion Drawings. We produce the full plans online for the certificate of lawfulness and the Building Regulation Drawings that will be pre-checked by the Building Control Officer before building work starts. All this will make sure that you will not be building anything that is non-compliant which might result in any costly corrections. We are absolute experts in Loft Conversion planning drawings and loft building regulations drawings. Your local Architect will not be offering the cheapest building regulations plans and will certainly not be offering the fastest building regulations drawings. We will produce all of your plans online and they will be ready FAST.  


Call Now +447520637418 get a customised quote here

  • Full UK Rear Extension/Loft Conversion Architectural Plans for $198
  • Please forward your ideas or sketches of what is in your mind.
  • And we will draft Professional 100% Scaled Autocad Plans as per your choice.
  • We will map the site layout using our online resources so please forward the full address
  • The service includes existing Floor Plan and All Elevations for Council Submission along with 2 revisions for $99 ($198 for existing as well as proposed with 2 revisions)

You can have a look at our Portfolio here

  • In addition you can add any extra services when ordering such as:
  • Upto 5 revisions for £70  ($99)
  • Planning Submission for £70  ($99)
  • Add Premiuim 5 Day Delivery for £70  ($99)
  • Add Fastrack 3 Day Delivery for £140  ($198)
  • Add Fastrack 1 Day Delivery for £210  ($198)
  • 3D Plans from £50  ($66)
  • 3D Plans of All Elevations from £70  ($99)

You can have a look at our Portfolio here


Order now and I will be in touch ASAP and we will discuss any variable and expectations for starting the order. 


You can also have a look at our other services for rear extension and loft conversion.

Warm Regards



Team Cadhauz