How Much More Is Land Worth With Planning Permission?
There is no fixed answer.
The value uplift achieved through planning permission varies significantly depending on factors such as location, housing density, local property values, market demand, infrastructure requirements and site-specific constraints. However, the difference between agricultural value and development value can be substantial. Land that may only be worth agricultural or amenity value today can become significantly more valuable once residential development becomes achievable and planning permission is secured.
Across England, residential development land values can range from hundreds of thousands of pounds per acre in weaker markets to several million pounds per acre in stronger locations, reflecting the considerable variation that exists between different areas.
Published evidence from the Valuation Office Agency demonstrates the significant regional differences in development land values across the country, which is why every site requires an individual assessment.
Land values vary depending on:
What Determines Development Land Value?
Location
Location is one of the most important factors influencing development land value. Land situated close to major employment centres, transport infrastructure, schools, services and established residential areas will often attract stronger demand from developers and housebuilders. Sites in locations where new homes are in short supply and property values are higher can typically command greater development values than comparable sites elsewhere. However, location alone does not determine value. Planning policy, site characteristics, development constraints and the scale of the development opportunity will also influence the price that developers may be willing to pay.
Type of Planning Permission
Different types of planning permission can influence land value in different ways.
In general, the greater the certainty that development can proceed, the more attractive a site is likely to be to developers and investors. Land with a clear and implementable planning permission will often command a higher value than land where significant planning risks remain.
The nature of the consent is also important. Factors such as the approved use, number of dwellings, development density, planning conditions and any Section 106 obligations can all affect the overall value of a site and its attractiveness to the market.
Ultimately, buyers will assess not only whether planning permission exists, but also how deliverable, viable and commercially attractive the permitted development is likely to be.
Types of Planning Permission include:
- Outline planning permission
- Full planning permission
- Residential allocations
- Mixed-use permissions
Housing Density
Housing density can have a significant impact on development land value. In simple terms, a site capable of accommodating a greater number of homes will often generate a higher land value because it has the potential to produce a larger overall development value. Developers will typically assess how many dwellings can realistically be delivered while satisfying planning policy requirements, design standards, infrastructure needs and environmental constraints. However, higher density does not always result in higher value. Factors such as build costs, affordable housing requirements, open space provision, parking standards and market demand can all influence the optimal density for a site. In some locations, a lower-density scheme may prove more commercially attractive than a higher-density alternative. Ultimately, the value of development land is often closely linked to the number of homes that can be delivered in a manner that is both planning-compliant and financially viable.
Development Costs
Development costs play a major role in determining the value of land.
When assessing a site, developers will consider not only the value of the completed development but also the costs involved in bringing the scheme forward. These may include construction costs, infrastructure works, planning obligations, professional fees, finance costs, utility connections, environmental mitigation and any abnormal site costs.
Sites with significant constraints, such as complex access requirements, ground conditions, flood mitigation measures or extensive infrastructure needs, will often incur higher development costs. These costs can reduce the amount a developer is willing to pay for the land.
As a result, two sites with similar planning potential may have very different land values depending on the cost and complexity of delivering the proposed development. The lower the development costs relative to the expected sales values, the greater the potential land value is likely to be.
Developers will also consider:
- Affordable housing requirements
- Biodiversity Net Gain obligations
- Infrastructure contributions
- Abnormal construction costs
Existing Use Value vs Development Value
Many landowners are surprised by the difference between existing use value and development value. Existing use value reflects the land's current lawful use, such as agriculture, grazing, amenity land or open storage. In many cases, this value may be relatively modest because it is based solely on the income or utility generated by the land in its current form. Development value, by contrast, reflects the potential value of the land if planning permission can be secured for a more valuable use, such as residential development. The prospect of delivering new homes can significantly increase the value of a site, particularly in areas where there is strong demand for housing. The gap between existing use value and development value is often what creates opportunities for landowners. Identifying realistic planning potential is therefore a key step in understanding what land may truly be worth in the future.
Agricultural Value
A field used for agriculture may have a relatively modest value.
Development Value
The same field with planning permission for housing could become substantially more valuable because developers are purchasing future development opportunities rather than existing agricultural use.
Is Planning Permission Always the Best Route?
Not necessarily. Whilst securing planning permission can significantly increase land value, it is not always the most appropriate strategy. Every site is different, and in some cases alternative routes may offer a better opportunity to unlock value while reducing risk, cost or timescales.
Local Plan allocation: Securing an allocation through the Local Plan process can establish the principle of development and significantly enhance a site's attractiveness to developers and housebuilders. Although the process can take time, allocated sites are often well placed to secure planning permission in the future.
Settlement boundary reviews: Local authorities periodically review settlement boundaries as part of plan-making exercises. Land located on the edge of existing towns and villages may benefit from these reviews, particularly where additional housing growth is required. Inclusion within a settlement boundary can improve a site's development prospects and potential value.
Strategic land promotion: For larger or longer-term opportunities, strategic land promotion may be the most effective approach. This involves promoting land through emerging Local Plans, Call for Sites exercises and evidence-based planning consultations with the aim of securing future allocation. While it is typically a longer process, strategic promotion can create substantial value where development potential is ultimately recognised.
In some circumstances, Local Plan allocation, settlement boundary reviews or strategic land promotion can create value before planning permission is formally granted.
The most suitable route will depend on the characteristics of the site, the local planning context and the landowner's objectives. In many cases, a combination of planning, promotion and long-term strategy will deliver the best outcome.
Frequently Asked Questions
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