Building and Loft Conversion Architect Services

We have good experience converting lofts and garages into habitable space and their incorporation into the main house. We’ve converted single family dwellings into flats and, in reverse, amalgamated flats to re-form the original single family dwelling that existed historically.

Our Capabilities

  • Architectural feasibility studies.
  • Design and visualisation for extensions in all forms including single storey, two storey, roof and basement.
  • Preparing, submitting and managing planning applications.
  • Interior design and visualisation.
  • Project management.
  • Detailed/technical design.
  • Contract administration.
  • Advice on environmental improvements.
  • Advice on additional consultants as and when required to support project, such as Structural Engineers, Approved Inspectors etc.
  • Advice on estimated budgets and project timescales.

Plan Your Home

Leave the details to us as we manage
your project from start to finish;
monitoring the budget, handling
planning permission and liaising with
What is planning permission?

In the UK, planning permission is the formal permission from a local authority for the alteration or erection of buildings. It can be granted, based on certain conditions being met, or refused.

It is your responsibility for establishing whether or not planning permission is required and submitting an application where relevant. Read our guide here to help you decide whether or not planning permission is required.

How much does it cost to get planning permission?
The local authority fee for a Householder planning application is £206. Depending on the complexity of your project, you’ll also need to allow for the fees of an architect, other consultants and specialist surveys. Read more about the costs involved here.
Do I need a planning consultant?
That depends on the complexity of the project and the degree of planning risk we identify. MATA Architects regularly manage householder planning applications and listed building consents for extensions and alterations to properties on sensitive sites within conservation areas without the involvement of planning consultants.


However, in certain circumstances we may recommend the appointment of a planning consultant and we can advise on a number of suitable partners with whom we regularly collaborate.

Is it possible to make changes after receiving planning permission?
New issues may arise after planning permission has been granted, which require modification of the approved proposals. Where these modifications are fundamental or substantial, a new planning application will need to be submitted. Where less substantial changes are proposed, there are the following options for amending a proposal that has planning permission:

  • Non material Amendment (only applies to planning permission, not listed building consent)
  • Amending the conditions attached to a permission including seeking minor material amendments
Can I apply for planning permission myself?
Yes. Anyone can apply for planning permission.

Make sure to:

  • Carefully read your local authority’s validation requirements that will provide guidance on the minimum requirements for information and the presentation of that information.
  • Review your local authority’s design guides for householder alterations and conservation area appraisals/ design guidelines if you are in a Conservation Area.
  • It’s also worth reviewing recent planning approvals and refusals in your local area (via the online planning register) to build up a picture of precedent.
Can I start building without planning permission?
We would strongly advise against this.

Whilst certain extensions and alterations will fall under permitted development rights, we would advise that a Certificate of Lawful Development or Use is sought before any works start on site so as to avoid any misunderstandings as to whether the proposal is in fact permitted.

Starting in a hurry without planning permission and/ or discharging planning conditions runs the risk of enforcement action.


Book a free consultation


We’ll listen to your ideas and give you our informed opinion


We’ll tailor a strategy and scope of service to suit your needs


You’ll receive an initial project brief and a clear mapping out of the next steps, together with our fee proposal

Get in touch to start a conversation

Find out if we are the right architecture practice for your project.

Relevant Projects

Black Box

Black Box is a small first floor rear extension to a mid terrace Victorian era house in Islington.

Slim Studios

The conversion of a single family dwelling into 3 individual, high-end studio flats in Camden.

Bolsover Street

Refurbishment and roof extension of a circa 170 sq.m. duplex penthouse flat in Fitzrovia.

Client Testimonials

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