Refurbishment and re-letting of Old Street office building
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In this record
Paul Street was once regarded as the ‘ugly duckling’ of our London portfolio. Located between Liverpool Street and Old Street, it was an unremarkable building in a decent location, neither adding much value nor causing real concern.
In different circumstances, it might have been an early disposal candidate.
The picture changed after the pandemic. Office values fell by around 30 per cent, and Old Street’s reputation as the UK’s tech hub weakened as many technology companies contracted.
At the same time, the opening of the Elizabeth Line made Liverpool Street one of the most desirable office locations in London.
Paul Street, sitting closer to Liverpool Street than Old Street, suddenly saw three to four times more viewing interest than comparable assets just minutes away. Its location close to the hugely successful Elizabeth Line had become its greatest strength.
Conventional industry advice was to carry out a full Cat A+ fit out, spending around £120 per square foot on interiors, furniture and finishes.
The argument was that higher specification would achieve higher rents and reduce void periods.
But the numbers rarely added up. Rental uplifts of £20 per square foot could not justify such a large outlay, particularly when lease terms had shortened to two or three years.
Worse still, once tenants moved out, the supposedly ‘brand-new’ space would need to be refitted again, creating a cycle of continual reinvestment for us as landlords.
But Maritime firmly rejected this approach.
We believed the fundamentals of tenant psychology mattered more. Businesses want offices that reflect their own identity, not someone else’s generic fit-out.
What tenants value consistently are the aspects they cannot easily change - the exterior, the communal areas and the overall sense of pride in their workplace.
We therefore committed £400,000 to upgrading Paul Street’s façade and common spaces. The dated yellow frontage was replaced with an attractive black and brick design, while shared areas were modernised.
The investment equated to around £23 per square foot - a fraction of the cost agents were recommending.
The results were immediate. Three existing tenants, all with leases close to expiry, agreed new terms.
Two signed five-year agreements and one committed to a 10-year lease. They retained control of their internal fit-outs while enjoying the benefits of a refreshed, modern building.
A new letting on the ground floor in May the following year lifted the rent roll to £530,000 per annum.
Paul Street demonstrates many of Maritime Capital’s core principles. We rely on data and analysis rather than consensus. We focus investment where it creates real value. And we use our experience of running businesses to understand how tenants think and what they genuinely need.
By resisting the cycle of expensive fit-outs and short leases, we turned a marginal asset into a stable, income-producing building in a strengthening location.
The ugly duckling became a reliable performer - not through following industry fashion, but by questioning it.
Speak to our team
Paul Street was the overlooked building in our portfolio until disciplined, data-led decisions made it a reliable performer. If an asset has always sat in the could-do-better column, it may simply need a different approach.
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.
Paul Street was once regarded as the ‘ugly duckling’ of our London portfolio. Located between Liverpool Street and Old Street, it was an unremarkable building in a decent location, neither adding much value nor causing real concern.
In different circumstances, it might have been an early disposal candidate.
The picture changed after the pandemic. Office values fell by around 30 per cent, and Old Street’s reputation as the UK’s tech hub weakened as many technology companies contracted.
At the same time, the opening of the Elizabeth Line made Liverpool Street one of the most desirable office locations in London.
Paul Street, sitting closer to Liverpool Street than Old Street, suddenly saw three to four times more viewing interest than comparable assets just minutes away. Its location close to the hugely successful Elizabeth Line had become its greatest strength.
Conventional industry advice was to carry out a full Cat A+ fit out, spending around £120 per square foot on interiors, furniture and finishes.
The argument was that higher specification would achieve higher rents and reduce void periods.
But the numbers rarely added up. Rental uplifts of £20 per square foot could not justify such a large outlay, particularly when lease terms had shortened to two or three years.
Worse still, once tenants moved out, the supposedly ‘brand-new’ space would need to be refitted again, creating a cycle of continual reinvestment for us as landlords.
But Maritime firmly rejected this approach.
We believed the fundamentals of tenant psychology mattered more. Businesses want offices that reflect their own identity, not someone else’s generic fit-out.
What tenants value consistently are the aspects they cannot easily change - the exterior, the communal areas and the overall sense of pride in their workplace.
We therefore committed £400,000 to upgrading Paul Street’s façade and common spaces. The dated yellow frontage was replaced with an attractive black and brick design, while shared areas were modernised.
The investment equated to around £23 per square foot - a fraction of the cost agents were recommending.
The results were immediate. Three existing tenants, all with leases close to expiry, agreed new terms.
Two signed five-year agreements and one committed to a 10-year lease. They retained control of their internal fit-outs while enjoying the benefits of a refreshed, modern building.
A new letting on the ground floor in May the following year lifted the rent roll to £530,000 per annum.
Paul Street demonstrates many of Maritime Capital’s core principles. We rely on data and analysis rather than consensus. We focus investment where it creates real value. And we use our experience of running businesses to understand how tenants think and what they genuinely need.
By resisting the cycle of expensive fit-outs and short leases, we turned a marginal asset into a stable, income-producing building in a strengthening location.
The ugly duckling became a reliable performer - not through following industry fashion, but by questioning it.