sim sales

A sim sale is special kind of sale that happens when a buyer wants to purchase 100% of your home

What is a sim sale?

Sim sale is short for ‘simultaneous sale and staircase’. It’s a special type of sale that happens when a shared owner has found a buyer who wants to purchase 100% of their home.

If that’s you, you need to staircase to 100% at the same time as selling your home. Both the sale and staircasing transactions complete on the same day, which is why it’s called simultaneous.

Staircasing is an industry term that means buying more shares of your home.

What you need to do

Here are the steps that you will need to take when you get an offer from a 100% buyer:

Step 1 - Get an up to date valuation

You will need a valid RICS valuation to sell 100% of your home. Valuations are valid for six months. They can be extended for another three months by asking your surveyor for an updated desktop report. The cost varies between around £85 and £120, including VAT.

Step 2 - Send us your Memorandum of Sale

As soon as you receive an offer on your home, ask your estate agent to email us a copy of the Memorandum of Sale, to Please let us know as soon as possible if anything changes on the Memorandum of Sale.

Step 3 - Tell us you want to go ahead

Once we’ve received your valuation and Memorandum of Sale, we will send you an acceptance form to sign. We will also ask for certified copies of your ID documents. Complete the acceptance form and email it to along with copies of the certified documents we ask for.

Step 4 - Appoint a solicitor

To help the sale go through smoothly, appoint a solicitor as soon as possible. Give them all the paperwork they ask for quickly, so they can answer questions from your landlord’s solicitor and the buyer’s solicitor.

What SO Resi will do

Here are the steps SO Resi will take to complete the sim sale:

Step 1 - Explain the steps

We will send you an email confirming the steps involved in the sim sale.

Step 2 - Check the valuation

We will check the updated valuation report from your RICS surveyor and acceptance form and work out how much it will cost you to staircase to 100% and sell your property.

Step 3 - Assess any home improvements

Next we check the valuation report for details of any home improvements you’ve made, and decide whether to deduct the value of these from the overall value of your home and sale price. Please note, only structural home improvements are taken into consideration – not cosmetic improvements.

Step 4 - Provide a leasehold management pack

We will create a management pack to give your buyer’s solicitor the information that they need to raise enquiries.

Step 5 - Work with your solicitors

We will deal with your solicitors and send them a completion statement setting out the final amount to buy the extra share and get all your rent payments and service charges up to date.

Costs of sim sale

When you sell 100% of your home through an estate agent, you will need to pay these costs:

  • Your estate agent’s selling fee. Please read any contracts thoroughly to ensure you understand their terms and conditions
  • The RICS valuation fee
  • Your solicitor’s fees
  • A fee for any additional enquiries by your solicitor – £60 including VAT
  • A fee for the leasehold management pack – £180 including VAT

Higher and lower offers

You can only accept a lower offer than the RICS valuation if you’re prepared to make up the shortfall – that is, your landlord’s share of the difference between the sale price and the RICS valuation.

You can accept a higher offer than the RICS valuation. Where this is achieved, the amount due will be based on your landlord’s share of the market value or the sale price, whichever is higher.

Your leasehold management pack

A leasehold management pack provides information about your home, which is needed by the buyer and their solicitor. You will be responsible for paying the cost of this pack, which is £180 including VAT. We will automatically start to prepare the leasehold management pack as soon as the landlord has instructed their solicitor. Please note it can take up to 10 working days to issue the pack.

Before the pack is issued to your solicitor, they will need to provide an undertaking confirming that the £180 will be paid on completion. Please liaise with your solicitor.

Extending a short lease

If you are thinking about extending your lease while selling your home, please let us know as soon as possible. Our aftersales team will be on hand to help you.

This 3 minute video explains the lease extension process:

If you prefer, our PDF guide explains the lease extension process:

Extending your Shared Ownership lease (PDF)

More information

If you prefer, our PDF guide explains the details of carrying out a sim sale.

Sim sales explained (PDF)

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