How to Use the Chain Builder

What is the Chain Builder?

The Chain Builder is a Premium tool designed for coordinating multi-party home swaps involving 3 to 10 tenants. When a direct 2-way swap isn't possible — because the person in your ideal home doesn't want yours — a chain connects the dots through additional tenants so everyone ends up where they want to be.

Managing a chain swap without a tool is genuinely difficult. You're juggling multiple landlords, multiple tenants, swap link diagrams, and coordinated timelines. The Chain Builder gives everyone a shared space to see who's involved, who moves where, and how things are progressing.

New to chain swaps? Read our complete guide to how swap chains work first — it covers the concept, legal rights, and why chains unlock swaps that direct exchanges can't.

Creating a chain

To create a chain, go to Swap Chains from your dashboard and click Create Chain. You'll be asked to give the chain a name and an optional description of what you're trying to achieve. You are automatically added as the first member and assigned as the chain manager.

You don't need to know the final chain size when you start. Chains grow organically as you discover new tenants who complete the circle. Start with the people you know and build from there.

Premium feature: Creating a chain requires a Premium account. However, any user (free or Premium) can be invited to and join an existing chain. Activate Premium free during early access.

Adding members to your chain

There are three ways to invite people into your chain:

1

By email address

Enter their email address from the chain page. If they already have a MutualExchange account, they'll get an in-app notification and email. If they don't have an account, they'll receive an email invitation to sign up and join.

2

From a message conversation

If you're already in a conversation with someone, you can invite them to your chain directly from the messaging thread. This is the quickest way when you've been chatting with a potential chain member.

3

From a listing page

When browsing listings, you'll see an "Add to Swap Chain" button on listing pages. Click it, choose which chain to add them to, and they'll be invited.

Invited members must accept before they appear in the chain. You can add members at any stage — chains are designed to grow as new links are discovered.

Setting swap links — who moves where

This is the core of the Chain Builder. As chain manager, use the Set Swap Links tool to define the circular arrangement — specifying which member moves into which property. For example: Sarah moves into Claire's flat, Claire moves into Mark's house, Mark moves into Sarah's flat.

The links are displayed as a visual chain map with colour-coded members, so everyone can see the full picture at a glance. No more drawing diagrams on paper or trying to explain the chain over the phone.

Tip: Get verbal agreements first

Before setting links in the tool, make sure every member has agreed to their position in the chain. The visual map is a record of what everyone has committed to — it's much harder to reorganise once landlord applications have been submitted.

Generating landlord documents

Click Landlord Document from the chain page to generate a professional summary of the entire swap arrangement. The document includes:

All chain members and their current properties (with postcodes)
Who is moving into which property
A unique reference number for the chain
The relevant Housing Act section for mutual exchange rights

Print it or save it as a PDF, then submit it alongside your mutual exchange application to your landlord. Each member should send a copy to their own landlord. The reference number helps landlords cross-reference with each other when processing the chain.

Chain status management

The chain manager can update the overall chain status as things progress. This keeps every member informed without needing to message each person individually.

Building Members are being added and swap links are being mapped.

All Agreed Every member has confirmed their position in the chain.

Forms Submitted All members have submitted applications to their landlords.

Approved All landlords have given consent for the exchange.

Completed Everyone has moved. The chain is done.

The group message board

Every chain has a built-in message board where all members can communicate. This is the place for updates, questions, and coordination — far better than trying to manage separate conversations with each person.

Use the message board to discuss moving dates, share landlord updates, and make sure everyone stays informed. All members can post, and messages appear in real time on the chain page.

What happens when someone leaves

If a member withdraws from the chain (or the manager removes them), any swap links involving that person are automatically cleared. The chain status resets to Building so the manager can reorganise.

This doesn't necessarily mean the chain is dead. The manager can invite a replacement tenant, remap the swap links, and continue. Chain swaps require flexibility — people drop out, new connections appear, and the chain evolves.

Tip: Have backup members in mind

If you spot other potential chain members while building your chain, save their listings. If someone drops out, you'll already know who might fill the gap.

Free vs Premium access

Premium members

Create new chains
Invite members
Set swap links
Update chain status
Generate landlord documents
Post on the message board

Free members

Join chains when invited
View chain details and swap links
Post on the message board
Receive status notifications
Cannot create chains or set links

Early access: All Premium features including the Chain Builder are free until September 2026. Activate now — no card required.

Frequently Asked Questions

Chains support between 3 and 10 members. Most successful chains are 3 or 4 people. Larger chains are possible but require more coordination — the Chain Builder handles the complexity for you.

Yes. A tenant can be a member of multiple chains simultaneously while exploring different options. Just be transparent with other members about your situation.

The chain manager (creator by default) can invite and remove members, set swap links, update the chain status, and generate landlord documents. They can also assign co-manager status to another member if needed.

Yes. The chain manager can remap swap links at any time. This is useful when new members join, someone leaves, or the group decides on a different arrangement.

If one landlord refuses, it may break the chain. The manager can remove that member, find a replacement, and remap the links. Alternatively, if the refusal is on invalid grounds, the tenant can challenge it — see our landlord refusal guide.

Ideally, yes. In a chain swap, all tenants should move simultaneously so nobody is left without a home. Coordinate a single moving day using the message board.

The Swap Tracker is for direct 2-way swaps between two people. The Chain Builder is for multi-party swaps with 3 to 10 tenants. If you're swapping with just one other person, use the Swap Tracker instead.

Absolutely. Cross-landlord chains are normal and legally supported. A council tenant can swap with a housing association tenant. Each landlord processes their own side independently. The landlord document helps them understand the full chain.