Architectural Design from the Comfort Of your Own Home

New online service

CK Architectural Lincolnshire is now providing a professional, quick and easy to use online design service, for all your design, planning and building regulation requirements in Lincoln, Grantham, Louth and all surrounding areas.

Providing you with a brilliant cost-effective solution to the design process our design team at CK can provide you with a free feasibility report.

FREE Property project consultation, we are giving you a detailed assessment on if your property and what can be achieved.

No Site Visit RequiredWe can design your modification without the need for a site visit which in turn can save you in excess of £200

Quick and EasySpend 10-15 minutes gathering all the information (site visits normally last over an hour)

Always available to talk, our technical and supporting staff are always available either telephone or email 5 days a week. We’re with you throughout, helping with planning applications, building control and even the build process.

What is a feasibility assessment? –  Your free feasibility assessment will determine your project scope using your needs against your wants, our design experts will help and advise you and discuss all possibilities that your property has to offer.  This will be followed up in a written report that you can peruse at your leisure without the pressure of someone sitting opposite you.  Your 4-page feasibility report will include the following:

  • Professional advice
  • Which applications are needed for your project (if any)
  • Application cost
  • Drawing cost
  • Building control requirement and potential issues
  • Estimated build cost
  • Structural engineer requirements
  • Structural engineer estimated costs
  • Detailed quotation
  • Fee schedule
  • Project progression flow chart

All the information you need will be put together in one place before your designs commence in an easy to read property assessment report.  Our architects, designers and building technicians will carefully study your requirement and provide this report completely free of charge. 

Self Survey

Although the thought of surveying your property might be a little daunting, our step by step online guide will walk you through the process to make it as easy and simple as possible. We will make sure that we have the required information from you to produce your concept designs. Our friendly support team are always available on the telephone should you require any assistance. Once we have the measurements and few quick photographs of the area along with a brief description of your project, we can begin making your dreams into a reality.

Design phase

Firstly, we will produce the existing drawings from your survey. Then we will work with you, whether that’s over email, telephone, Skype or even WhatsApp to produce your concept designs. From there we can explore all the best design options before going through planning and building control.

Additional Services – Along with design, planning and building regulations we offer a fully comprehensive package which allows you to choose the level of service we provide from design right through to build, these additional services can be discussed when your approval is received.

We're still working just from home

Date of Publish 26.03.20

COVID-19 is all everyone hears and thinks about at the moment however we must remember this will be over and that we are a resilient nation.

With the current situation although being terrible we have seen a lot of business’s thriving with imaginative new ways to continue to serve their customers. Here the team at CK Architectural have set up at home and have identified new ways for our clients to interact with us without the need for home or site visits yet still providing the same exceptional service.   

With our customers in mind we have developed a new online design service to make the complete process as easy and stress free as possible. We can provide property assessment, designs along with useful advice on planning, building regulations and construction without any obligation. More info here.

Planning applications in Lincoln, West Lindsey Council and North Kesteven are still accepting and processed. Planning applications are already submitted online so there are no current changes to the process. For current updates on lincolnsire plannign applications click here.

Building Control applications are still being accepted by Lincoln, West Lindsey Council and North Kesteven for plan check. We do believe most sites to cease work but drawings for building regulations can still be done, submitted and checked ready for when people can return to work.

We will be overviewing all the existing applications and seeing them completed through planning and building control as usual. If you are looking for some free initial advice you should see our new online design service.

We would please urge everyone to be safe and sensible, stay home and be strict with your social distancing.

A well-planned home extension has the potential to turn even the humblest of properties into a comfortable, stylish and light-filled home.

With the right design and execution, you can create a wonderful new zone that not only transforms the way you interact with your living environment, but also adds significant value.

Why extend your home?

There are lots of reasons why you need more space in your home.  Maybe the family is expanding, or someone is coming to live with you.  Perhaps you need more space to do the things you enjoy.  Whatever the reason, the simplest answer to gaining more space is not to move to a new house but to extend your property.  Extending your home and creating is more space is a lot cheaper and easier than moving to a new house altogether. Here’s a beginner’s guide to the world of extensions.

What should I consider before extending?

Insurance Make sure to notify your insurer of the work. Some may not provide cover during the works, but others will offer a dedicated extension insurance products.

Foundations – If your extension involves building or digging foundations within 3m of the boundary, party wall or party wall structure, or digging foundations within 6m of a boundary, the work will require you to comply with the Party Wall Act.

Deliveries – You will need to think about how deliveries and truck will reach the property and unload large items or material. You will also need to consider where builders will park and store their tools.

Boiler – Will your existing boiler will be able to cope with the new demands of the extension? Replacing the boiler completely would be an option or you may consider underfloor heating.

Other important factors to consider are:

  • Soil conditions on the site
  • Services
  • Surrounding trees
  • Any history of flooding
  • Rights of way
How much will it cost to build an extension?

Prices for extension projects vary significantly depending on factors such as the size, number of storeys, specification and which part of the country you’re building in. Extensions can be a tricky subject. It can be difficult to get a clear understanding of all the rules, regulations and costs. That’s why it’s a good idea to get a proper handle on extension costs before you dive in.


Builders will generally stage payments at each phase of the build. Try not to make any payments upfront apart from the initial deposit.

Your architectural designer or architect will charge fee’s according to the work involved.

How to Pay for Your Extension

Many people will borrow money to finance their extension. Ideally, we would all have savings to cover the costs of home improvements but unfortunately it doesn’t always work that way.

Your best options are:

Loan – Personal loans of up to around £25,000 are suited to smaller projects. The loan may be enough to cover the building work and if you are fitting kitchens or bathrooms in your extension you can often buy these on finance from larger stores. Just keep an eye on repayments as they can quickly add up when you borrow from several sources

Credit Card – If you need to borrow £1000’s rather than tens of thousands ` an interest-free credit card is a good choice. Shop around — the best deals offer up to 27 months of zero-rated spending

Reportage – If you are borrowing more than £25,000 you may need to reportage or take our a secured loan against your home.

Choosing a builder

When choosing your builder in Lincolnshire, you need to make sure they have the relevant experience, knowledge and availability to build your home extension. Choose someone you’d feel comfortable working with and talking to about concerns, they will be a big part of your life for a couple of weeks or months. The quotations they provide should be clear and easy to read, referencing the detailed approved building regulations drawings. Ask who will be doing the work, will they be subcontracting and who is responsible.

Breaking Down Different Types of Planning

This is a blog post aiming to help those who can’t decide on an extension type, are confused about the different types planning and what is allowed, looking at budgets and specification.

Planning permission is still a widely misunderstood concept, we sometimes feel like we are in the dark.  Laws can and will change which in turn can take advantage of homeowners or members of the public looking to add an extension, do some remodelling or create a new dwelling within the boundaries of our land.

The different types of planning are as follows:

  • Householder Planning Application
  • Full Planning Application
  • Outline planning consent
  • Reserved Matters
  • Listed building consent
  • Advertisement consent
  • Lawful Development Certificate (LDC)
  • Prior notification
Typical Types of Extension

The most frequent one we see is for an existing property in need of extra space, wanting to either develop to the rear (a single storey or even double storey rear extension), or to the side.

A frequent form of extension which allows the homeowners to add lots of vital ground floor space is a single storey ‘wraparound’ extension, which combines the rear extension with the side extension to create a large ground floor open space.

The double storey rear or side can add space upstairs also, with the addition to an extra ‘wing’ at the side of the house, generally located at the top of stairs an extra bedroom or 2 can be achieved through careful planning and layout.

Loft conversions which can include dormer windows (flat roof and gabled), usually to the rear as planning prefers this, and can create a 3rd floor in the dwelling to add a large master bedroom with en-suite, along with extra storage space in the eaves where headroom is lower. This can be overcome with adding a dormer window, to the rear of the property, to allow extra headroom, light and space, as well as lots of value on to the property, it is a good idea that this is carefully planned. Velux windows can be added to add light and don’t require planning permission and are therefore classed as permitted development.


There are certain restrictions on some developments, if the house lies in a conservation area, is a world heritage site, a site of specific interest or a listed building (will need listed building consent), and at all time boundaries need to be respected.  Any development more than 3m in length, will need to be 3m from the boundary also (known as the 45-degree rule), whereby rights of light for the neighbour will be respected, as well as privacy issues, therefore most windows/opening tend to be on the rear rather than facing the side.

home extension design Lincoln

Dormers tend to be on the rear, any development to the front facing the road must be subservient to the main house (can be slightly set back – and depends on the neighbours), and height of single storey can be maximum 4m of original eaves height. Two-storey extensions no closer than seven metres to rear boundary.

home extension design Lincoln

“No more than half the area of land around the “original house”* would be covered by additions or other buildings”. However, this can be important as if houses were built with detached garages, outbuildings etc in a good plot of land, this can be used as original area, therefore we can gain 30% (argued as permitted development potential) plus another 30% through either permitted development and then the 50% as planning permission. If the house was already extended after 1948 then this would be part of the 30% area allowed under permitted development.

Permitted Development

According to the Planning Portal “The increased size limits for single-storey rear extensions that were previously time limited and due to expire on 30 May 2019 have now been made permanent by government.”

Class A – Extensions (enlargement, improvement or alteration)

This means for both planning and permitted development, the size of extensions has been increased (doubled), 6m for semi detached and terraces houses, 8m for detached. Therefore, a single storey space can be added to the ground floor, offering a great open plan space with glazed openings to the garden (if rear garden space permits), with a maximum 3m second storey addition to form an extra bedroom or 2.

Class B – Additions to the roof

This allows for rear dormers and hip-to-gable extensions if the additional volume created does not exceed 50m3 (40m3 for semis and terraced homes).

Class C – Other alterations to the roof

Class D – Porches

Class E – Buildings etc. (outbuildings)

This allows for an outbuilding to be erected within a residential curtilage if it is sited behind the principal (often the front) elevation, does not cover more than 50% of the curtilage and is not more than 3m in height (4m for a dual-pitched roof; 2.5m where within 2m of a boundary).

If the 6m or 8m single storey rear extension is to be agreed, a certificate of lawful development via prior notification (to the authority and neighbours) is submitted, if there are no objections by either then the certificate can be awarded, and work can commence.

Agricultural Land/Change of Use

Another large potential is that agricultural buildings may be converted to residential (up to 450m²), if the building is structurally capable of being converted without requiring engineering work and providing access can be achieved. Up to five dwellings may be created up to a maximum floorspace of 465m², of which three may be ‘large’ (>100m²), and 2 smaller i.e. 80m². This change of use is subject to prior approval being sought in respect of transport, access, noise assessments, ecology reports, flood risk, may be required by the authority depending on sites and plans for that given site.


Typical costs for a single storey rear extension are around £1,500pm2, (ranging from £1,000-£2000), or greater if a high spec kitchen/furnishing are desired. A typical 3x5m extension would cost around £20,000-£30,000. If you want a double storey it would rise to around £50k, around the same as a single storey wraparound extension. Larger width rear extensions, large wraparounds, or double storey side extensions with rear single storey rear can be from £60, 80, 100k +, depending on spec, bifold doors, kitchen layout/cost, what ground works are needed as foundations/structure may need to be improved/built to take the weight of the new extension.

Architects fees can be anywhere from 2 or 3, 5-10% of the build cost depending on level of service desired, to get through design options, planning, building regulations, working drawings (inc electrical/M&E layouts) and project management. A typical £40-60k extension may cost £2-4k in fees depending on option chosen.


We have explored the different types of planning available in each circumstance. Each development is individual to the property, the occupiers, the LPA, us as Architects to help you maximise your planning potential right for that property and individual preferences.

If you would like a quote, please email or get in contact and we can do a free initial meeting to explore these opportunities at reasonable fees.

Try our new

Online Design Service

  • Free property assessment
  • Free project feasibility report
  • Design your project with our experts
  • Easy self survey guide
  • Online planning applications
  • Online building regulations drawings