Our Development Planning Viability Services

Planning Viability Assessments

All development sites are unique, and planning policies often ignore site-specific development economics. We prepare robust Financial Viability Assessments (FVAs) using the Residual Land Value approach, bespoke to your site. By comparing this to a site-specific Benchmark Land Value, we provide robust mathematical evidence required to justify a reduction in unviable planning obligations. 

Independent Valuation & Viability Defense

Local planning authorities routinely appoint their own independent assessors to test our viability assumptions and review the market evidence informing your scheme’s Gross Development Value (GDV). We lead this negotiation process, vigorously defending our inputs against the council's assessors to protect your profit margins and ensure the final scheme remains commercially viable.

Why Choose Us?

Maximising Land Values

Ensuring that planning permissions are deliverable and that development viability obligations are not overly onerous is the most efficient way to protect and maximise land values.

Risk Mitigation

Small, isolated packages of on-site affordable housing can introduce disproportionate delivery risk. We negotiate your planning viability to ensure a highly deliverable, profitable scheme.

Commercially Focused

Ensuring developers maintain a reasonable level of profit is fundamental to tackling the housing crisis and getting homes built.

The Planning Viability Process Timeline

Appraisal & Site Analysis

We assess your proposed development plans, cost schedules, and local planning requirements. Our team models the scheme's Residual Land Value and compares it to the Benchmark Land Value (BLV) to identify the viability deficit.


FVA Preparation & Modelling

We draft a robust, RICS-compliant Financial Viability Assessment (FVA) utilising industry-standard development appraisal software. This report details the true financial parameters of your scheme to prove it cannot sustain unviable planning obligations.


Council Assessor Negotiations

Once submitted, we lead the discussions with the local planning authority's appointed assessor. We define our viability inputs and negotiate a deliverable and viable outcome. 

Providing specialist development planning viability consultancy across London, the Home Counties, and the South East.

Westminster City Council

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London Borough of Southwark

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London Borough of Brent

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London Borough of Richmond upon Thames

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Brighton and Hove City Council

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Three Rivers District Council

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Broxbourne Borough Council

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City of London Corporation

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London Borough of Tower Hamlets

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London Borough of Camden

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Royal Borough of Kingston upon Thames

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Westminster City Council ✳︎ London Borough of Southwark ✳︎ London Borough of Brent ✳︎ London Borough of Richmond upon Thames ✳︎ Brighton and Hove City Council ✳︎ Three Rivers District Council ✳︎ Broxbourne Borough Council ✳︎ City of London Corporation ✳︎ London Borough of Tower Hamlets ✳︎ London Borough of Camden ✳︎ Royal Borough of Kingston upon Thames ✳︎

Case Studies

Land at Wembley Point, HA9

Council

London Borough of Brent

Planning Reference

22/0784

Our Proposal

Redevelopment of the site including erection of 3 no. buildings up to 32 storeys, comprising 515 residential dwellings (Class C3), flexible commercial floor space (Class E) indoor sport facility (Class E) and associated cycle parking and landscaping and enabling works.

The Result

Planning Permission Granted Successfully reduced the affordable provision from 35% to 25% on-site.

48 Galsworthy Road

Council

London Borough of Kingston

Planning Reference

25/01066

Our Proposal

Demolition of existing 2-storey house, Erection of 7 no. shared living flats with a total of 50 bedrooms in two separate blocks with associated external communal amenity space, landscaping and bin and cycle stores.

The Result

Viability assessment submitted for a planning appeal. Successfully negotiated a NIL provision of affordable housing and NIL payment in lieu of affordable housing.

What our clients are saying about us.

  • “The Roscoe group provided us with affordable housing and Viability advice ahead of acquiring a site in South East England. Following an arduous planning process with lengthy viability negotiations handled by RG we successfully got consent and RG lined up a buyer of the affordable homes upon the grant of consent which de-risked the scheme for us and delivered much needed affordable housing in an efficient and effective manner.”

    Matthew Ahearn - Director - Canbury Homes

  • “We have used Roscoe Group on several occasions in connection with Valuation and Viability Advice. I have always found them to be thorough and knowledgeable. They are always prepared to take phone calls and respond to emails in a timely manner. Would happily recommend.’’

    Hugo Tobin - Wilton Trust Ltd

  • “Knowles has recently worked with Roscoe Group on multiple Land Acquisition and Viability negotiations, and throughout the partnership their experience and commitment to delivering was always evident, going over and above and ensuring our best interests were central. From the introduction, research, and overall approach, we couldn’t recommend them more highly and we look forward to continuing our relationship between Knowles & The Roscoe Group.”

    Megan Knowles - Director - Knowles Land

  • “Roscoe Group assisted me with my purchase, acting as my sole agent and advisor. They were always quick to respond to my enquires and provided me with very professional and reasoned advice. The Roscoe Group went above and beyond his initial scope of services and I couldn't recommend them highly enough.”

    Catriona Mcleod - Private Buyer