Can I Sell a House with Structural Alterations Not Shown on the Title Plan in Scotland?

Many Scottish homes have been changed over the years. A wall knocked through to create an open plan kitchen, a loft conversion, a conservatory, a garage turned into a bedroom or an extension built by a previous owner are all common. Problems tend to surface when you sell, because your buyer’s solicitor will want to see that the work was properly approved and that what is on the ground matches what is in the title.

The short answer is yes, you can sell a house with alterations that are not shown on the title plan in Scotland. In fact, most internal changes would never appear on a title plan, because the plan shows the extent and boundaries of your land rather than the layout of your home. What really matters is whether the work had the building warrant, completion certificate and planning permission it needed, and whether any extension sits within your legal boundaries. This guide explains how to check, how to fix gaps and what your options are if you need to sell quickly.

What does a title plan actually show?

When your property is registered in the Land Register of Scotland, it has a title sheet and a title plan. The plan is drawn on the Ordnance Survey map and shows the extent of the land you own, usually with a red boundary. It does not show internal walls, room layouts or whether your kitchen was once two rooms. Our guide to the role of the Land Register when you sell explains how registration works.

So an internal alteration, such as removing a wall, is not a title plan problem at all. It is a building standards question. The title plan becomes relevant when work changes the footprint of the property in a way that affects boundaries, for example:

• An extension or garage: built right up to, or over, the boundary with a neighbour.
• Moved fences, walls or hedges: where the physical boundary on the ground no longer matches the red line on the plan.
• Shared areas: where part of a common close, garden or driveway has been taken into one property without a change to the titles. If a neighbour disagrees, our article on shared driveway disputes in Scotland may help.
• Older titles: properties still recorded in the older Register of Sasines rely on written descriptions and deed plans, which can be less precise. Our guide on selling without your title deeds covers missing paperwork.

Which alterations need a building warrant, planning permission or both?

In Scotland, building work is controlled by two separate systems. Building standards, under the Building (Scotland) Act 2003, are about safety, structure, fire, insulation and accessibility. Planning, under the Town and Country Planning (Scotland) Act 1997, is about appearance, use and the effect on neighbours. A project can need one, both or neither.

Type of alteration	Building warrant usually needed?	Planning permission possibly needed?
Removing or altering a load bearing wall	Yes	No, if purely internal
Loft conversion	Yes	Possibly, for dormers or roof changes
Rear or side extension	Yes, in most cases	Depends on size and position, and on permitted development rights
Conservatory	Sometimes, depending on size and design	Depends on size and position
Converting a garage into living space	Usually yes	Not usually, unless conditions restrict it
Splitting a house into flats	Usually yes	Usually yes, as a change of use

This table is a general guide only. Exact requirements depend on the details of the work, when it was done and the property itself. If your home is listed or in a conservation area, extra consents may also apply.

Why do missing consents matter when you sell?

When you sell, your solicitor will normally be asked to produce building warrants, completion certificates and any planning permissions for alterations. The standard clauses used in most Scottish missives include obligations on the seller about alterations and the consents for them, so gaps are usually picked up early. Your buyer’s lender will also want to know the property is properly approved before releasing funds.

A completion certificate is the key document. It is accepted by the council’s building standards service once it is satisfied that the work was carried out in line with the warrant and the building regulations. A warrant on its own shows that the work was approved on paper, but not that it was finished properly.

• For the buyer: unapproved structural work raises safety questions and may affect insurance or a future sale.
• For the lender: missing consents can delay or block a mortgage offer.
• For you: late discovery can lead to price renegotiation or a buyer withdrawing, which is why it pays to be upfront about known issues.

The Home Report surveyor may also comment on visible alterations, and the property questionnaire asks about them. Our guide on what to do if your Home Report flags major problems explains how to respond.

How can you put missing building warrants right?

The route depends mainly on when the work was done. The current system under the Building (Scotland) Act 2003 applies to work from 1 May 2005, while older work falls under the previous legislation.

When the work was done	Usual route	What to expect
On or after 1 May 2005, no warrant obtained	Submit a completion certificate where no warrant was obtained, sometimes called a late completion certificate	Plans and details as for a warrant, an inspection, and a higher fee. The work must meet the building regulations in force when you submit
On or after 1 May 2005, warrant obtained but no completion certificate	Submit the outstanding completion certificate, or apply to amend the warrant if the work changed	The council inspects to confirm the work matches the warrant
Before 1 May 2005, no warrant	Ask the council whether it offers a letter of comfort	A letter confirming the council is unlikely to take action. Not every council offers them, and criteria vary
Work that did not need a warrant	Some councils offer a letter confirming the work was exempt	Useful evidence for a buyer where the work is minor

Fees for regularising work are higher than for a normal warrant. Comhairle nan Eilean Siar’s published fee guidance, for example, sets the fee for a completion certificate where no warrant was obtained at 300% of the relevant table fee, compared with 200% for a late warrant application where work has already started. Glasgow City Council will only consider a letter of comfort for works completed between 15 June 1964 and 30 April 2005, so check your own council’s rules before you apply. Our separate guide on selling a house with an extension and no building warrant goes into more detail.

What about planning permission for older alterations?

Planning has its own rules. In Scotland, building operations carried out without planning permission generally become immune from enforcement four years after they were substantially completed, and most changes of use after ten years. Our guide on planning enforcement notices and time limits in Scotland explains this in detail. Building standards do not have these immunity periods, which is why the building warrant position is often the bigger issue for older alterations.

If planning permission was needed and the work is recent, you can apply for retrospective permission. Where you want certainty that older work is now lawful, your solicitor may suggest a certificate of lawful use or development from the council.

What if an extension or boundary does not match the title plan?

If physical changes on the ground do not match the red line on your title plan, your solicitor will want to understand why. Sometimes the plan is simply out of step with a long standing fence line. Sometimes an extension, garage or wall has been built on land that is not in your title at all.

• Rectification of the Land Register: under the Land Registration etc. (Scotland) Act 2012, the Keeper of the Registers of Scotland must correct an inaccuracy in the register when both the inaccuracy and the correction are manifest, meaning perfectly clear and not reasonably disputable. Registers of Scotland explains the process in its guidance on inaccuracy and rectification.
• Disputed boundaries: where the position is not clear cut, the Keeper cannot simply change the register. You may need an agreement with your neighbour, a disposition of the strip of land concerned, or in some cases a decision from the Lands Tribunal or the court.
• Small discrepancies: minor differences between fences and OS based plans are common. Your solicitor will advise whether anything needs to be done or whether the buyer’s solicitor is likely to accept the position.

Can title indemnity insurance help?

Title indemnity insurance is a one off policy that protects the buyer, and usually their lender, against financial loss if the council later takes action over missing consents. In Scotland, policies are commonly used for older alterations where the work appears sound and there is no sign of a problem.

• Contacting the council can void cover: insurers usually will not offer a policy if the council has already been approached about the work, so speak to your solicitor before anyone phones building standards.
• It does not make the work safe: a policy covers the risk of enforcement costs, not defects in the building itself.
• Buyers can refuse it: some buyers or lenders prefer the consents to be regularised, particularly for recent or significant structural work.

Practical steps if your alterations are not properly documented

1. Make a list: record every alteration you know about, with approximate dates and who carried it out.
2. Search your paperwork: look for warrants, completion certificates, planning permissions, engineer’s calculations and invoices. Our list of documents you need to sell a house in Scotland is a useful checklist.
3. Speak to your solicitor before the council: they can check the council records and advise whether a late completion certificate, a letter of comfort or an indemnity policy makes most sense. Here is why a solicitor is essential when selling.
4. Check the boundaries: compare your title plan with what is on the ground, especially around extensions, garages and fences.
5. Get professional advice on structural work: a structural engineer’s report can reassure buyers and support any application. If there are wider concerns, see our guide on selling a house with damp or structural issues.
6. Build in time: regularising work can take weeks or months, which affects how long your sale takes.

When might a cash sale be the better option?

Sorting out old alterations is often worthwhile, but it is not always practical. If a late completion certificate would mean major upgrading work, a boundary needs to be agreed with a reluctant neighbour, or you simply need to move on, a cash buyer can be a sensible alternative. There is no mortgage lender involved, so missing paperwork is taken into account in the offer rather than holding up the sale.

At Sell My House Fast in Scotland, we help homeowners sell quickly with a cash offer, no viewings and no chain, and you choose your date of entry. Your solicitor still handles the legal work. If you are deciding between routes, our comparison of selling to a cash buyer and using an estate agent sets out the pros and cons, and our guide on selling your house without an estate agent explains the alternatives.

Frequently asked questions

Do internal alterations need to be shown on the title plan?

No. The title plan shows the extent and boundaries of the land you own, not the internal layout of the building. Internal changes such as removing a wall are a building standards matter, so what your buyer needs is evidence of a building warrant and completion certificate where one was required.

Can I sell my house if a previous owner did the work without a building warrant?

Yes. Many homes are sold with older unapproved alterations. The usual options are a late completion certificate for work since 1 May 2005, a letter of comfort for some older work where your council offers one, or title indemnity insurance, combined with honest disclosure to the buyer.

What is a letter of comfort?

It is a letter from the council confirming that, based on an inspection or the information provided, it is unlikely to take action over work carried out without a warrant. It is not the same as a completion certificate, and many councils only offer letters of comfort for work completed before May 2005.

How long does a late completion certificate take?

It depends on the council, the complexity of the work and whether any upgrading is needed to meet current regulations. Allow several weeks at least, and longer if work has to be opened up or improved.

What if my extension is partly on my neighbour’s land?

Speak to your solicitor straight away. If the register is clearly wrong, it can be rectified by the Keeper. If the land genuinely belongs to your neighbour, you may need to agree a transfer of the strip of land, which takes time and cooperation.