House Extensions & Outbuildings

Creating your dream home may be a matter of extending upwards, outwards or downwards. It may require a stand alone building in your grounds or maybe you have a plot of land and want to start from scratch. We are here to help.

Our team can advise you on what you need to consider to make your plans succeed and if needed, introduce you to trusted professionals who will work with us collaboratively to bring your project to life.

House Extensions & Outbuildings

First Permission in Principle in the London Borough of Sutton Secured for 9 Flats

McLoughlin Planning is pleased to have helped a property owner secure Permission in Principle (PiP) with the London Borough of Sutton for an upward extension (airspace) development for 9 new flats. This is the first approved Permission in Principle granted by this London Borough.

Due to the significant number of reports and plans required through validation for full planning permissions, we have been approached by SME developers to find a means of managing development risk and to ensure the principle of their aspirations is something which can be agreed with the Council before investing in the technical work required. This is particularly applicable to constrained inner-city urban development sites where upward extensions for airspace development can be met with resistance.

Following previous success in London in using Permission in Principle, we worked with the landowner to develop a scheme which could be presented through a PiP to secure the principle of airspace development for the property. As this application type considers only the location, land use and amount of development, the level of supporting information is a fraction of a full planning permission. Whilst it does not remove the considerations and risks of subsequent technical considerations, it does provide an opportunity to agree with the Council whether the amount (i.e. number of residential flats) and location of the airspace development is acceptable. As PiP’s are limited to up to 9 residential units, this type of proposal is ideally suited for smaller development proposals in urban areas.

Following submission, McLoughlin Planning worked closely with the Council and case officer to ensure the proposal was being determined correctly and to agree with the officer on the appropriate amount of development which would be realistic to approve for further technical consent.

We are so pleased to have helped provide the landowner with reassurance through the PiP of their property’s development potential and to secure another first with a London Borough.

📞 If you would like a FREE initial consultation call to explore whether your property could benefit from PiP, then please get in touch!


Chris Moore,

01242 895008

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I'm a listed building owner, at what point do I require consent?

According to Historic England, there are approximately 500,000 listed buildings on the National Heritage List for England (NHLE), varying from Grade I, II, II* listed buildings marking their contribution to special architectural and heritage interests and to protect these assets for future generations. Those who own a listed building and intend to undertake repairs, restorations, alterations, or extensions to their property may likely require either planning permission or listed building consent (possibly both!).

The challenge with determining whether you need Listed Building Consent is that often even works which may be considered “simple” may require consent. It is often a fact and degree assessment, considering the level, scale or intensity of the work proposed. If you undertake works to a listed building, where consent is required, it is a criminal offence, and the Council could take Enforcement Action.

This uncertainty can often prove challenging when trying to retrofit and improve the energy efficiency of listed buildings (EPC rating) to provide a more sustainable home or business. For example, installing an EV charging point, replacing, or adding secondary glazing or installing an air source heat pump/solar panel often require Listed Building Consent and/or Planning Permission. As Listed Building Consent applications can take approximately 8 weeks to be determined from validation as well, ensuring you capture all works within your application is important to help avoid delays to your project.

Seeking expert advice can help in determining before work commences whether Planning or Listed Building Consent is required. Working in partnership with experienced heritage consultants and architects, we have helped guide and support owners in securing their retrofit aspirations. Some examples to illustrate our recent experience working with listed buildings include:

  • Consent for an EV Charging Point to a Grade II Listed Manor in the Cotswolds with Cotswold District Council.
  • Replacement Windows and other Internal/External Alterations and Upgrades on a Grade II listed Hotel adjoining Hyde Park with Westminster City Council.
  • Retrospective Listed Building Consent for the installation of Windows, Doors, and Internal Appliances in a Grade II listed home with Cheltenham Borough Council.
  • Alterations to Shopfront on a Grade II* listed shop on Cheltenham’s Promenade with Cheltenham Borough Council.
  • Replacing Roof Tiles on a High Street Store in Wooten under Edge with Stroud District Council.
  • Providing a Planning Appraisal and Advice for the holistic enhancement of a Grade I Listed Manor in the Southwest of England.


If you are considering works to your listed property and are not sure whether you may require planning or listed building consent, then please get in touch with one of our experienced planning consultants for an initial FREE consultation.

T: 01242895008


Alternatively, you can book a meeting via the “book an appointment” contact form on our website.

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Garden Office

McLoughlin Planning are delighted to obtain planning permission on behalf of our client to construct an outbuilding to the rear of their property to be used as a garden office. This is a development that is becoming ever more popular in the aftermath of the Covid-19 Pandemic which has seen working patterns change with a greater propensity for people to work from home.

The property in question is in the village of Upper Dowdeswell in the Cotswolds. The period building is within a Conservation Area where the design of extensions and outbuildings are more strictly controlled. The property is also next door to a Grade II* listed building which meant the design of the outbuilding could not harm the setting of the nearby designated heritage asset.

Despite these constraints, McLoughlin Planning achieved planning permission for a contemporary garden office constructed with vertical timber cladding, slimline aluminium windows and doors and an asymmetric sloping roof expertly made by Koto Design. The Local Planning Authority agreed that the modern design was a refreshing addition to a period building, and it blended in with its surroundings seamlessly.

Outbuildings are often seen by Local Planning Authorities as a good compromise for allowing additional floor space to be created at historic buildings without causing harm to their historic fabric, as is often the case with an extension.

The result of this development is a quiet working space away from the noise and disruption of a family home. If you are considering the construction of your own home office please feel free to contact us to discuss your project further.



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Roof Terrace Alterations

McLoughlin Planning is pleased to have helped a homeowner in the London Borough of Camden in securing planning permission for amendments and improvements to an existing roof terrace space.

The existing property had a centrally located roof outbuilding which housed a staircase leading up to the outdoor space. However, the structure leaked both heat and rain due to historically poor construction. Furthermore, its central location meant the outdoor space could not be used to its full advantage.

As the property is also located in a conservation area, care was taken to ensure the proposal would also find ways to visually reduce its impact on the street scene and support the visual interest of the historically significant surrounding built form.

Working closely with the architect the initial proposal sought to move the stair opening to the southern edge of the building to provide a modern interpretation of the existing outbuilding which would visually reduce its built form and architecturally provide a distinction between the historic and modern built form. The scheme also includes an air source heat pump to help improve the property’s energy efficiency and overall sustainability.

Unfortunately, the Council raised concerns during the application about the overall design and height of the proposed cover and that this would likely be refused. Despite efforts to demonstrate how the structure complied with planning policies and would not result in the alleged harm, the Council’s position remained too far apart from the applicants to reach a suitable comprise on the design presented. However, in the interest of securing planning permission and a functional alternative, we worked with the architect to address the Council’s objections and proposed an amended opening with shared visual similarities to a Velux window. This would also help provide further access to sunlight/daylight internally.

The Council agreed that the amended proposal addressed their concerns and planning permission has now been granted. We are pleased that working proactively with the Council, architect, and the applicant meant a solution could be presented, providing a more aesthetically pleasing and functional outdoor space in time for the summer!


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