Acquisition and lease restructuring of Clerkenwell office building
Sector
›
Developments
Value
›
£18m
Location
›
Clerkenwell, London
Timeframe
›
2021

In this record
Innovative financial engineering and lease restructuring proved an inspired move for an £18m long-term investment in a central London office building.
Maritime began our involvement with 16-17 Clerkenwell Close in July 2021. We recognised that the area was due to be linked to the new Elizabeth Line, and market rates would soon increase as a result of its improved infrastructure and enhanced transport connectivity.
The asset is located within five minutes’ walk of Faringdon Station - a prime position for which tenants would be willing to pay a premium.
The five-storey office building was leased to a subsidiary of a prestigious global firm, who were coming to the end of their lease. The previous owner was negotiating a new 5 year deal at £38psf.
Simply continuing with the tenants’ existing terms did not make financial sense - plus their parent company was also considering relocating them and centralising their offices in south London.
Instead, Maritime worked with the firm and developed a creative solution.
The building felt a little unloved and was in need of investment, and we were keen to secure them as long-term tenants.
We made the decision to offer £2.5m as a capital contribution restricted to improvement works on the building (landlord benefit).
In return, they agreed a new deal at £57psf on a new 10-year term with ultimate parent guarantee.
The deal has created an asset valued at £24.5m. Taking into account the purchase price and the building transformation costs, Maritime has created £4m of value thanks to astute financial engineering and structuring that few other investors would have considered.
Maritime made the decision to focus on long-term returns, with the view that the arrival of the Elizabeth Line would transform the area into a hub that businesses and communities would gravitate to.
Our evaluation has proved correct, with nearby properties already commanding higher rents, giving us a strong negotiation position when the lease is due for review.
Maritime’s smart decision led to a capital gains win, coupled with rental uplift and an upgraded asset, all while having a prestige long-term tenant in place.
Speak to our team
A creative capital contribution and lease restructure created £4m of value at Clerkenwell Close, ahead of the Elizabeth Line arriving. Intelligent structuring often unlocks more than bricks and mortar alone.
Key insights
Real estate sits alongside equities, private equity and fixed income in most family office portfolios – but it behaves differently to all of them, and that's exactly why it earns its place.
Real estate is one of the core asset classes in most family office portfolios, alongside public equities, private equity, fixed income and increasingly private credit. Family office asset allocation to real estate has grown in recent years, driven by its long-term yield, its role as a diversifier against public markets, and its suitability for multi-generational holding periods that few other asset classes match.
Family offices typically hold a mix of private equity and direct investments, real estate, public equities, fixed income and alternative investments, with the exact split varying by size, generational stage and risk appetite. Real estate tends to justify its place in that mix for reasons other asset classes don't share: a steady, long-term income yield; a long holding horizon that matches how families think about multi-generational wealth; and enough direct control that a family can shape an asset's performance rather than simply hold a position and wait.
Once real estate earns its place in the allocation, there's a separate question of how to access it – directly, or through a fund or REIT structure. That decision affects fees, control and liquidity in more depth than an allocation discussion needs to cover; the trade-offs are set out in full in our guide to financial planning for property investment. What matters at the allocation level is simpler: direct ownership is what lets a family actively shape a property's performance rather than passively hold a position in it, which is a large part of why real estate earns a place in the portfolio in the first place.
Discovery Park in Kent is a clear illustration of what that control can achieve. Brought under active management, the science park's capital value grew from around £20m to more than £75m over two years – restructuring leases and separating out service charges rather than simply holding the asset and waiting. A passive fund position, with no say over how the asset is run, couldn't have delivered the same outcome.
UK real estate remains a core allocation, but the mix within it is shifting. Portfolios are diversifying into student accommodation, retail parks and leisure assets alongside the more traditional office and residential holdings, and branded hotel and hospitality assets remain in favour where they carry a strong covenant. Family offices weighing new allocations are also factoring in wider considerations earlier than before – joint venture and asset management arrangements, transparency requirements such as the Land Registry's Persons of Significant Control and Overseas Entities registers, and planning and tax implications specific to the deal.
Maritime Capital's own track record reflects the same pattern of diversification: self-storage and leisure conversions such as Storage Box in Hersham, branded hospitality including The Forbury Hotel in Reading and Raithwaite Sandsend in Yorkshire, and retail assets alongside the more familiar office and residential holdings. The common thread isn't the sector – it's a covenant and a business model resilient enough to justify the allocation in the first place.
Few asset classes hold up as well across multiple generations as real estate. A well-managed property can be improved, repositioned and passed down without a fixed exit forced by a fund's term, which matters to families thinking in decades rather than years. That said, realising the benefit depends on active management – a passively held property doesn't generate the same value as one where lease strategy, service charge control and repositioning decisions are being made deliberately.
Hungerford Park shows what that looks like over a genuinely long horizon. Acquired in 2005 as a 300-acre estate, it's been built over two decades into a working farm, a holiday-let business and an events venue – the kind of layered, multi-generational value creation that a fund's fixed term could never accommodate, and that only comes from treating the asset as a long-term project rather than a static holding.
Most family offices don't carry deep in-house real estate expertise alongside their wider investment team, which is why property is often the asset class most commonly brought in through a specialist partner rather than managed entirely in-house. Maritime Capital works alongside family offices and their existing advisers – wealth managers, investment managers and private banks – on the UK commercial property portion of the portfolio specifically, from acquisition through to ongoing asset and property management.
Innovative financial engineering and lease restructuring proved an inspired move for an £18m long-term investment in a central London office building.
Maritime began our involvement with 16-17 Clerkenwell Close in July 2021. We recognised that the area was due to be linked to the new Elizabeth Line, and market rates would soon increase as a result of its improved infrastructure and enhanced transport connectivity.
The asset is located within five minutes’ walk of Faringdon Station - a prime position for which tenants would be willing to pay a premium.
The five-storey office building was leased to a subsidiary of a prestigious global firm, who were coming to the end of their lease. The previous owner was negotiating a new 5 year deal at £38psf.
Simply continuing with the tenants’ existing terms did not make financial sense - plus their parent company was also considering relocating them and centralising their offices in south London.
Instead, Maritime worked with the firm and developed a creative solution.
The building felt a little unloved and was in need of investment, and we were keen to secure them as long-term tenants.
We made the decision to offer £2.5m as a capital contribution restricted to improvement works on the building (landlord benefit).
In return, they agreed a new deal at £57psf on a new 10-year term with ultimate parent guarantee.
The deal has created an asset valued at £24.5m. Taking into account the purchase price and the building transformation costs, Maritime has created £4m of value thanks to astute financial engineering and structuring that few other investors would have considered.
Maritime made the decision to focus on long-term returns, with the view that the arrival of the Elizabeth Line would transform the area into a hub that businesses and communities would gravitate to.
Our evaluation has proved correct, with nearby properties already commanding higher rents, giving us a strong negotiation position when the lease is due for review.
Maritime’s smart decision led to a capital gains win, coupled with rental uplift and an upgraded asset, all while having a prestige long-term tenant in place.