For property owners & asset managers
Your vacant building, active again — with no cost to assess or operate.
We take on long-term vacant commercial buildings — offices, retail units, light industrial — and put them to work as managed community accommodation. You keep full legal ownership. We handle planning, upgrading, compliance and management from start to finish.
Our approach is designed to reduce holding costs, offset vacancy burden, and restore productive occupation, while increasing the long term value of your building.
The market case
The numbers behind the opportunity.
The cost of standing empty
An empty building keeps spending — whether or not anyone is inside.
Service charges, utilities, insurance and business rates don't pause because a building is vacant. After the three-month void relief, rates revert to 100% of the full charge. Most owners find the real cost of vacancy substantially higher than they expected.
Beyond the direct cost, there is a regulatory pressure building in the background:
-
EPC tightening
A minimum EPC C is proposed for commercial lettings from 2027, rising to B by 2030. Roughly 56% of London's secondary office stock is currently rated C–F — making retrofitting to let commercially a significant capital decision.
-
Rates anti-avoidance
The Non-Domestic Rating Act 2023 (in force April 2024) extended the re-occupation window required to reset the void rates relief from 6 to 13 weeks — narrowing the scope for short-term occupation strategies.
-
Secondary market softening
Vacancy in London's secondary and tertiary office stock reached approximately 27% in 2024 and is projected to continue rising, while prime rents remain at record levels. The market for non-prime space is increasingly thin.
What is vacancy actually costing you?
Request a free, confidential assessment of your building's current holding costs and its potential as managed accommodation. We respond within 48 hours with initial suitability feedback and next steps.
Assessment request received
Thank you for completing your property assessment. We've received your submission — our team will review it and come back to you within 48 hours (2 business days) to discuss next steps.
A confirmation email has been sent with your reference number. If it isn't in your inbox, please check your other email folders.
If you need to follow up, you can reach us at Properties@foursquare-partners.com or book a call via our website.
Please keep your reference number handy for any future conversations.
What we do with the building
A commercial space converted into managed community homes — then returned.
We work exclusively with vacant commercial buildings — offices and similar Use Class E properties. Using established planning routes, we convert them into a mix of accommodation for people referred by the local council, on a fixed term with a clear reinstatement path.
Shared residential layouts
Shared residential layouts with shared facilities, delivered in line with all required licensing and fire safety standards.
- Single adults and couples in housing need
- Communal kitchens, bathrooms, and living areas
- Full HMO licensing compliance
- Fire safety standards met throughout
Self-contained units
Self-contained family accommodation where building layout allows. Designed to meet relevant space and safety standards.
- Mixed-use buildings
- Residential activation of upper floors
- Retention of existing ground-floor commercial use where applicable
- Clear separation between operational areas
100% Flexible: Our approach is flexible by design — focusing on maximising viable occupancy while respecting planning constraints, building configuration, and operational requirements.
Ready to bring your building back into use?
Tell us about your building and we will come back to you within two working days to arrange a conversation and the next steps. The more you can tell us, the faster we can move.
Building received
Thank you for getting in touch with Four Square. We've received your enquiry — a member of our team will review your details and come back to you within 48 hours (2 business days) to discuss next steps for your property.
A confirmation email has been sent with your reference number. If you can't see it in your inbox, please check your other email folders.
If you need to follow up, you can reach us at Properties@foursquare-partners.com or book a call via our website.
Please keep your reference number handy for any future conversations.
Your questions
Straight answers to the hard ones.
Will I lose control of the building or its future?
No. You keep full legal title throughout. The arrangement is time-limited — typically 3–5 years with agreed break clauses — and the building is returned to you in its agreed condition at the end. Because the residential use is established via Class MA permitted development or a temporary "meanwhile use" permission, the original Use Class E commercial status is preserved: the building reverts to commercial use without any further action from you.
What if my building is mortgaged? Will my lender agree?
Lender consent forms part of the process and is something we plan for from the outset. We prepare a full lender information pack — covering the head lease structure, guaranteed rent schedule, reinstatement undertaking, sinking fund, and Four Square's governance and accounts. Most lenders find that a stable, income-generating, actively managed arrangement is a materially better position than a vacant building accruing liabilities and potentially deteriorating. We have navigated this process with both regional and national lenders.
What about damage — who is responsible if something goes wrong?
Four Square takes full responsibility for the building's internal management, maintenance and the people living in it during the term. Your responsibilities are limited to the structure and exterior — consistent with a standard commercial head lease. Appropriate insurance for the residential use is arranged as part of the process. An occupied, actively managed building typically carries a lower risk profile than one left vacant: squatting, arson, water ingress and gradual deterioration are the real risks of prolonged vacancy.
Is this a way to avoid business rates?
No — and this distinction matters to us. The charitable business rates relief available to Four Square applies only where a building is wholly or mainly used for a charitable purpose, assessed on the actual physical extent of the use — not on intention. Four Square converts and occupies 100% of the building as community homes for people referred by the council. That full, genuine use is what makes the model work legally and operationally. The relief is a consequence of doing the real thing; it is never its purpose, and we are transparent with the billing authority about our use from the outset.
Will it affect the building's value or reputational standing?
Evidence from comparable meanwhile use housing schemes across London does not support the view that a well-managed temporary residential use damages values or creates reputational issues. The opposite risk — a building left visibly vacant and deteriorating — is typically more damaging to both the asset and its surroundings. The exterior of the building remains commercial in character; the residential use is internal. Residents are housed occupants under the council's homelessness duty, not guardians or squatters, and the building is managed to a professional standard throughout.
Start with a property review
Tell us about your building — we'll tell you if it stacks up.
The first step is a short, no-obligation conversation about your building and its local planning context. We assess feasibility before anything is committed — and we only proceed where the numbers, the planning and the building genuinely work.
- Property owners & asset managersProperties@foursquare-partners.com