How to Structure a Property Investment With Family Members
Buying with parents, siblings or adult children unlocks deposits and serviceability — but the wrong structure costs tens of thousands in CGT, SDLT and probate.
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Introduction
Family property investment can be a wealth-building masterstroke or a relationship-destroying mess — and the difference is almost entirely structural. The legal wrapper you choose today decides who pays tax, who gets the asset on death, and what happens if someone wants out. Here are the four routes that actually work.
Joint tenants — keep it simple
Equal shares with automatic survivorship — when one dies, their share passes to the other(s) outside the estate. Suits married couples and civil partners. Doesn't suit unequal contributions, blended families, or anyone wanting their share to pass via will.
Tenants in common — control your share
Each owner has a defined share (e.g. 60/40 or 25/25/25/25) that passes via their will, not survivorship. Best for unequal contributions and blended families. Always pair with a declaration of trust setting out shares, contributions and exit terms.
Limited company SPV — long-term winner
Each family member is a shareholder. Class A and B shares allow different dividend rights. CGT is only on share value, not property. SDLT on share transfers is 0.5% vs 5% surcharge on property. Mortgages from limited-company specialists (Paragon, Aldermore, Foundation). Inheritance planning through gifts of shares with 7-year survival.
Trust structure — long-term family wealth
Discretionary or interest-in-possession trust. Trustees own legal title; beneficiaries enjoy economic benefit. Useful for protecting assets from beneficiary divorce, bankruptcy or spendthrift behaviour. Heavy entry IHT (20% over £325k) and complex compliance — usually only worth it above £1m portfolio.
JBSP mortgages
Joint Borrower Sole Proprietor — up to four borrowers' incomes combined, but only one or two on the deeds. Helps adult children buy with parents' income on the mortgage. Parents have liability but no ownership — meaning no SDLT surcharge for the parents. Specialist lenders: Skipton, Barclays, Furness.
Declaration of trust
Essential where contributions or shares are unequal. Sets out: ownership percentages, capital contribution by each party, mortgage liability split, rental income split, exit mechanism (right of first refusal, valuation method, notice period), what happens on death or divorce. Solicitor draft £400–£800; saves thousands later.
Family agreement
Beyond the legal structure, write a one-page family agreement: who manages the property, how decisions are made (majority? unanimous?), how disputes are resolved, how distributions work. Not legally enforceable in itself but prevents 90% of family arguments.
Final word
Smart Sleep Property handles the heavy lifting — referencing, compliance, deposits, repairs, and full tenancy management across Norwich and Norfolk. Get in touch if you'd like us to handle this for you.
Frequently asked questions
What is the key rule for family property investment?+
Family property investment structures: joint tenants (equal shares, survivorship), tenants in common (defined shares, will), limited company (each member as shareholder), or trust (settlor/trustee/beneficiary split). JBSP mortgages allow up to four borrowers on one property. Declaration of trust ess
Does this apply across England?+
Yes — this guide covers England. Scotland, Wales and Northern Ireland have separate but broadly similar regimes.
Where can I get help?+
Smart Sleep Property offers compliance support, document templates and full management for Norwich and Norfolk landlords.
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