When you’re building a granny annexe there are many considerations to make. However, when you live in a conservation area, things can get even more complicated. But that is not to say it isn’t possible.
With the help of an annexe expert team like iHus you have the guidance and years of industry-backed experience to help you through the maze of legalities and permissions.
Considerations include the impact on the setting in which the annexe will be built as well as the environmental thought and sustainability of the build amongst many others.
Before we go into more information on any of these areas, we thought it would be great to share a few success stories of multiple families that we have helped build their annexe in a conservation area to show what a difference it can make when getting the experts involved.
The Prestage Family Annexe in a Conservation Area in Lewisham, London
Eli Prestage had no problem with the London Borough of Lewisham Local Planning Authority (LPA) when she wanted to build an annexe in the Sydenham Hill Conservation Area.
To get the planning permission, there was a further consideration to be met. Approval was required from the Letchworth Heritage Foundation. They requested the height to be lowered slightly to ensure there would be no adverse impacts on the character and appearance of the conservation area. This was not a problem for our design and build team, we complied with their request and the build went ahead.
The Tait Family Annexe in a Conservation Area in Letchworth Garden City
Heather Tait was successful in gaining planning permission from North Hertfordshire District Council LPA before the construction of her 34m2 annexe build in Letchworth Garden City.
The iHus planning experts were on hand to put the planning application together as well as advise on design and size. The Prestige Family Annexe was regarded by the LPA to be of an appropriate size and design, respecting the character and visual appearance of the conservation area and therefore planning permission was granted and the build went ahead.
The Judd Family Annexe in a Conservation Area in Dorset
What is special about the Judd family annexe is it was able to be built under a Certificate of Lawfulness (COL). This allows for annexes that are within certain criteria (one of which is size) and do not need full planning permission.
At iHus we apply for both COL and withdraw full planning if the former is successful. This way we cover all bases.
What are the Main Considerations for Building an Annexe in a Conservation Area
Conservation Area Consent
Conservation Area Consent is a specific requirement for designated conservation areas. It is in place to preserve the architectural and historic integrity of the locations.
When applying, proposals must demonstrate sensitivity to the area’s character, using appropriate materials and designs.
The LPA assesses applications, considering both national legislation and local conservation policies.
Early consultation with your LPA is advised and can provide guidance and improve the likelihood of gaining approval for development within these protected areas. Of course, iHus can help you do this and often has the exact right contact.
Architectural Synergy and Impact on the Setting
The impact an annexe has on its setting and how it is designed are both important considerations when developing in conservation areas.
Builds must blend seamlessly with the existing environment, respecting the architectural style, scale, and materials of the heritage assets that are already in place.
This approach preserves the visual and historic value of the area. Proposals should enhance, not detract from, the character and appearance of their settings.
So that these considerations can be measured, impact assessments may be required to demonstrate how new developments maintain the integrity of the area.
Successful integration often involves meticulous design and thoughtful placement of new structures to ensure they complement their historical surroundings.
At every stage from discovery to design before we put the planning permission application in for you, iHus will ensure that you have the best possible chance of meeting the requirements needed in your area to make permission possible.
Environment and Sustainability
Integrating environmental and sustainability considerations into an annexe build, especially in sensitive areas like conservation areas, is hugely important.
Finding the right balance between heritage preservation and modern sustainability practices is something that we thrive on at iHus.
It involves using energy-efficient materials and technologies, reducing carbon footprints, and ensuring that new constructions enhance ecological value.
Local planning authorities often require sustainable design features that comply with both national environmental targets and local conservation goals.
Successful projects demonstrate a commitment to preserving historical integrity while promoting environmental sustainability, often incorporating features like renewable energy sources, sustainable drainage systems, and landscape designs that support local biodiversity.
Speak to the Planning Permission Experts
Like most things in life, experience is the most valuable thing when it comes to planning permission. At iHus we know what projects have the best chance of gaining permission and we can help find solutions when a project is likely to fail – giving our customers a happy medium to meet their needs and the requirements of the LPA. We also have built relationships with planning officers across the UK meaning our network allows us contacts and information to give us a much better chance of meeting the requirements needed.
Speak to a member of the team who will be happy to help you and give advice on building your annexe in a conservation area.
