The lease is rarely the first thing a selling dentist thinks about. Valuation, goodwill, NHS contract transfer — these tend to dominate early conversations. But in practice, the lease is one of the most operationally complex elements of the sale, and one of the most common causes of delay.
Understanding how the lease works within a dental practice sale — the mechanics of assignment, the role of the landlord, the impact on CQC registration, and how deal structure affects what is required — helps sellers prepare properly and avoid surprises that cost time and money.
Freehold vs Leasehold: The Starting Point
The first question is straightforward: does the practice own the freehold or occupy under a lease?
Freehold practices are simpler to sell from a premises perspective. The property transfers with the business. There is no landlord to involve, no consent to obtain, and no risk of a landlord imposing conditions or delaying the process. In a freehold transaction, the property forms part of the deal and is typically transferred either alongside the business or separately to the buyer.
Leasehold practices — which represent the large majority of dental practices in the UK — require an additional layer of work. The lease is a contract between the tenant (the practice) and the landlord. When ownership of the practice changes hands, the question of who holds the lease, and on what basis, must be resolved.
Lease Assignment in an Asset Sale
In most dental practice sales, the transaction is structured as an asset sale: the buyer acquires the business assets (goodwill, equipment, NHS or private contracts) rather than the company that owns them. In this structure, the lease must be assigned from the seller to the buyer.
Lease assignment requires the landlord’s consent. This is not optional — proceeding without consent where it is required would be a breach of the lease, and could allow the landlord to forfeit it. The consent process involves:
Licence to assign. The landlord’s formal consent is documented in a licence to assign. Your solicitor will draft this and submit it to the landlord (or their solicitor) as part of the transaction. The landlord is permitted to review the buyer’s suitability — their financial standing, their professional qualifications, and their ability to meet the lease obligations.
Review of buyer covenant strength. Landlords assess the incoming tenant’s ability to pay the rent and meet lease obligations. Institutional landlords or property companies will typically want to see the buyer’s accounts, bank references, and evidence of professional registration. A buyer who is a first-time practice owner, or whose financial standing is materially weaker than the current tenant, may face greater scrutiny.
Timeline. The lease assignment process typically takes 4–8 weeks from the point the formal application is submitted. Institutional landlords and managed estates often take longer. The sale agreement’s longstop date must allow for this; the lease assignment frequently sits on the critical path of a dental practice transaction.
Authorised Guarantee Agreement (AGA). This is a significant point that many sellers underestimate. As a condition of consent, the landlord will often require the outgoing tenant (the seller) to enter into an Authorised Guarantee Agreement. Under an AGA, the seller guarantees the buyer’s performance of the lease obligations — meaning if the buyer fails to pay rent or comply with the lease after completion, the landlord can pursue the seller.
The AGA obligation typically runs until the next permitted assignment of the lease. For sellers planning to retire or move away from the sector, this contingent liability should be discussed carefully with a solicitor before the sale is agreed. Understanding the scope of the AGA — particularly the duration and the nature of obligations covered — is important.
New Lease vs Assignment: When Surrender and Regrant Is Preferable
Assignment is not always the right mechanism. In some transactions, the better outcome is for the buyer to negotiate a new lease directly with the landlord, rather than taking an assignment of the existing one.
This typically arises when:
- The remaining term is short, and neither the buyer nor their lender is comfortable with the existing term
- The existing lease contains unfavourable terms that cannot be changed on assignment but could be negotiated fresh
- The landlord prefers a direct relationship with the incoming tenant rather than dealing with an assignment
Where a new lease is granted, the seller surrenders the existing lease and the landlord grants a new lease directly to the buyer. From the seller’s perspective, this removes the AGA risk entirely — there is no assignment, so there is no guarantee obligation.
The trade-off for the buyer is that a new lease will be granted at current market rent, not the rent on the existing lease. If the current rent is below market — which is common for practices that have occupied the same premises for many years — taking an assignment preserves that below-market rent. Surrendering for a new lease means losing it.
Buyers will weigh the improved terms they can negotiate on a new lease against the cost of moving from below-market rent to open-market rent. This is a genuine commercial negotiation, and the outcome depends on how far below market the current rent is and what terms the buyer can achieve.
What Lease Terms Matter to Buyers
Buyers and their lenders will scrutinise the lease in detail during due diligence. The elements that most directly affect value and lender comfort are:
Remaining term. Dental practice acquisition lenders typically require the lease to have a minimum of 10–15 years remaining, including any option to renew under the Landlord and Tenant Act 1954. A practice with fewer than 10 years remaining will face a restricted buyer pool — some buyers will decline on finance grounds alone — and the impact on price can be significant.
Break clauses. A landlord break clause — giving the landlord the right to terminate the lease before contractual expiry — is treated as highly negative by buyers. It creates fundamental uncertainty about long-term occupation, which makes it difficult to finance and difficult to value. Tenant break clauses are broadly neutral: they give the buyer flexibility without imposing risk.
Rent review provisions. Buyers will check when the next rent review falls and on what basis it operates. Ratchet clauses (upward-only reviews) are standard in UK commercial leases. A review falling shortly after completion, or a review basis linked to a rapidly rising index, will be factored into the buyer’s EBITDA modelling.
Repairing obligations. Most commercial dental practice leases are on full repairing and insuring (FRI) terms — the tenant is responsible for all repairs and reinstatement. Buyers and their solicitors will review the current state of the property and any known dilapidations liability. Unresolved dilapidations can be a source of price negotiation or conditional requirements in the sale.
Use class. The lease must permit use as a dental surgery. If the lease permits use as a dental surgery or for Class E use generally (which in England encompasses dental and medical uses since the 2020 reforms), this should be straightforward. Where use is restricted in a way that creates ambiguity, the buyer’s solicitor will want clarification or a landlord consent to confirm dental use is permitted.
Lease Renewal Before the Sale: Timing Matters
If the lease has fewer than 10 years remaining, a practice sale is likely to be harder, slower, and lower in value than it would be with a longer term. The practical advice is clear: renew the lease before starting the sale process, not as a condition of it.
A lease renewal negotiated under the Landlord and Tenant Act 1954 (where the lease qualifies) gives the tenant the right to a new tenancy. The timing:
- Begin the process 12–18 months before you intend to go to market
- The negotiation and documentation can take several months, particularly where the parties disagree on rent
- A fresh lease of 15–20 years, completed before marketing, removes a significant buyer concern and demonstrates that the premises are secure
Trying to negotiate a lease extension as a condition of the sale itself — with a buyer waiting — compresses the timeline, reduces negotiating leverage (the landlord knows you need a result quickly), and can cause deals to fall through if the extension is delayed.
CQC and the Lease: Align the Timelines
CQC registration for a dental practice is linked to the specific registered location — the premises address. When ownership changes, the buyer must be registered with CQC at that address before they can legally operate as the registered provider.
For a leasehold practice, CQC’s process requires evidence that the buyer has legal occupation of the premises. In practice, this means the lease assignment (or new lease) must be sufficiently advanced for CQC to be satisfied that the buyer will have occupation rights at the point they register as provider.
Getting this right requires early coordination between the legal team handling the lease and the regulatory team handling the CQC application. The assignment and the CQC registration timeline should be planned in parallel. A mismatch — where the legal completion happens but the CQC registration is delayed, or vice versa — can prevent the buyer from trading immediately post-completion.
The Share Sale: A Different Picture
Where the practice is held within a company, a share sale is often an alternative to an asset sale. In a share sale, the buyer acquires the company itself rather than its underlying assets. Because the lease is held by the company — and the company does not change — there is no assignment and no landlord consent required.
This is a material advantage where:
- The landlord is likely to be difficult or slow to consent
- The lease contains an onerous alienation clause
- The AGA exposure for the seller is a concern
The qualification is that most modern commercial leases contain a change-of-control provision — a clause that treats a change in the ownership of the tenant company as equivalent to an assignment, triggering the consent requirement. Sellers considering a share sale structure should have their solicitor review the alienation and change-of-control clauses before assuming no landlord involvement is required.
Find out what your dental practice is worth →
For a complete overview of the dental practice sale process, see how to sell your dental practice. For guidance on what buyers look at across the whole business, see dental practice due diligence explained.
Frequently Asked Questions
Do I need my landlord’s consent to sell my dental practice?
In most leasehold dental practice sales, yes. Standard commercial leases require landlord consent to assign the lease to a buyer. The landlord cannot unreasonably withhold consent under the Landlord and Tenant Act 1988, but they can review the buyer’s financial standing and professional qualifications before agreeing. The consent process typically takes 4–8 weeks. Where the sale is structured as a share sale and the lease contains no change-of-control clause, landlord consent may not be required.
What is an Authorised Guarantee Agreement (AGA) and should I be concerned?
An AGA is a document you sign when the lease is assigned, guaranteeing the buyer’s performance of the lease obligations. If the buyer defaults on rent or other lease obligations after completion, the landlord can pursue you under the AGA — typically until the lease is next assigned. This is a contingent liability that can last for years after you have exited the practice. Understanding the scope, duration, and financial exposure under any AGA is important; take specific legal advice before agreeing to one.
What happens to CQC registration when the lease is assigned?
CQC registration is linked to the practice’s registered address. When ownership changes, the buyer must register as the new provider at that address. CQC will want evidence that the buyer has legal occupation of the premises, so the lease assignment and the CQC registration timeline need to be coordinated. Misaligned timelines can create a gap where the buyer has completed legally but cannot yet trade as the registered CQC provider.
Should I renew my lease before selling my dental practice?
If you have fewer than 10 years remaining, renewing before marketing is strongly advisable. A short lease restricts your buyer pool — many acquirers and their lenders have minimum term requirements — and can reduce the price. Renewing 12–18 months before you go to market gives you time to negotiate from strength and remove a significant buyer concern before they even see your financials. Trying to negotiate a lease extension as a condition of the sale itself is harder, slower, and more likely to cause delays.
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