Practice Area

Development Agreements

Property development is rarely straightforward. You're typically managing multiple parties—the landowner, contractors, financiers, planners, and end-buyers or tenants. Each has different interests, and the legal structure you put in place determines how risk and reward are shared, and what happens if things go wrong. A well-structured development agreement protects your investment, clarifies what each party is responsible for, and creates the framework for a successful project.

I've worked with developers ranging from small housebuilders undertaking single-site projects to corporate developers managing portfolios of major commercial and residential developments. The legal issues vary by project type, but the core challenges are the same: acquiring land on the right terms, securing planning permission, managing construction risk, arranging development finance, and structuring agreements that allocate risk appropriately. My role is to help you navigate these complexities, structure the project in a way that works commercially, and ensure the legal documentation is clear and enforceable.

Development advice is as much about practical problem-solving as legal knowledge. You might hit planning obstacles, contractor issues, or find that market conditions change mid-project. I help you think through options and find pragmatic solutions that keep the project moving forward while protecting your interests.

How I can help

Expert guidance on development structures: option agreements, promotions, joint ventures, and risk allocation

Advice on land acquisition, planning permission, and development finance arrangements

Construction contract review and negotiation, ensuring risk is allocated appropriately

Support managing construction contracts and resolving disputes during the build

Development cost planning and financial modelling advice

Expertise in structuring developments for multiple parties (joint ventures, partnerships)

Compliance with planning conditions and conditions of finance

Post-completion advice and risk management throughout the development lifecycle

What a Development Project Involves

A development project typically starts with acquiring or controlling land. This might be through outright purchase, an option agreement (giving you the right to purchase if planning permission is obtained), or a promotion agreement (where a developer controls the land in exchange for carrying all development risk). Once you control the land, the next critical step is securing planning permission. This involves preparing detailed plans, making a planning application, and potentially negotiating with the local authority or obtaining permission through an appeal if refused.

Parallel to planning, you're usually arranging development finance—a mortgage or development loan that funds the construction. Lenders will want security over the land, planning permission confirmation, and contracts with reputable contractors. Once planning is secure, you'll enter into construction contracts with main contractors and specialist subcontractors. Then comes construction itself, with all the potential for delays, cost overruns, and disputes. Throughout, you're managing cash flow carefully—land cost, construction cost, and finance costs are being incurred long before revenue from sales or lettings comes in.

Key Development Agreements and Structures

The legal structure of a development project typically involves several key agreements. First, the land acquisition agreement—how you control the land and on what terms. An option agreement gives you the right (but not the obligation) to purchase the land if planning permission is obtained, paying the landowner only if you proceed. A promotion agreement is similar but typically involves the developer bearing most development risk in exchange for a higher profit share. A joint venture or development partnership agreement might structure the relationship between co-developers or investors.

Second, the construction contract—typically a contract with a main contractor who carries out the building works. These come in different forms: a fixed-price contract (the contractor bears cost and time risk), a cost-plus contract (you pay actual costs plus a fee, bearing cost risk yourself), or a more hybrid arrangement. Third, a development agreement with your lender—the mortgage or development loan documentation that creates security over the land and takes charge of rental or sales income. Fourth, if selling units, contracts with buyers or occupiers. If developing for letting, leasing agreements with tenants or anchor tenants.

Planning Permission and Development Risk

Planning permission is central to any development. Without it, the land is virtually worthless for development purposes. Planning risk includes the risk of refusal, the risk of conditions being attached to permission that increase costs or reduce profit, and the risk that permission becomes out of time if you don't start development within a specified period. I advise on the planning landscape, the likelihood of permission, what conditions might be attached, and how to structure agreements to manage planning risk. For instance, if you're acquiring land subject to obtaining planning permission, an option agreement usually makes your purchase obligation conditional on planning being obtained.

Planning conditions can significantly affect development cost and value. For example, conditions requiring affordable housing contributions, highway improvements, or infrastructure provision can cost hundreds of thousands of pounds. Other conditions might impose restrictions on the final use of units. Once permission is obtained, you need to ensure you comply with it exactly—deviations from the approved plans, or unauthorised uses, can result in enforcement action. I advise on what conditions mean in practical terms and how they affect project viability.

Construction Contracts and Managing Build Risk

Construction contracts allocate responsibility for delivering the building works on time, within cost, and to specification. The main forms used in the UK are the JCT suite (widely used for major contracts), the NEC4 form (increasingly popular because it promotes collaborative working and early dispute resolution), and bespoke contracts. The choice of contract form affects how risk is allocated. A fixed-price contract incentivises the contractor to work efficiently but means they might cut corners if costs run high. A cost-plus contract is more flexible but means you're exposed to any cost overruns.

Critical issues in construction contracts include: the contract sum and how variations are priced; the programme and what happens if there are delays; who bears the cost of unforeseen ground conditions or other site risks; what happens if the contractor becomes insolvent; defects liability (how long the contractor must fix defects after completion); and dispute resolution procedures. I review construction contracts to ensure they're fair, manageable, and protect your interests. I advise on standard forms versus bespoke terms, and on how to structure the contract to incentivise timely, quality delivery. If disputes arise during construction, I help resolve them and advise on whether to withhold payment, refer to adjudication, or pursue other remedies.

Development Finance and Lender Requirements

Most developments are funded by a development loan (mortgage) from a bank or specialist lender. The lender will typically require security over the land and a charge on rental or sales income. They'll also require proof of land ownership or control, planning permission (usually in draft form initially, then final permission), a detailed cost and revenue projection for the project, and contracts with a reputable contractor and professional team. Lenders often appoint a 'development monitor' or surveyor to oversee the project and certify that it's progressing in accordance with the loan agreement.

The loan is usually drawn in instalments—'drawdowns'—as construction progresses and milestones are achieved. For example, you might draw funds for land acquisition, then further tranches as construction reaches agreed stages. Lenders typically hold back a retainage (usually 5-10%) until practical completion and defects are resolved. If your project runs into difficulties—cost overruns, delays, or changed market conditions—you might find yourself unable to draw funds or facing demands from the lender to inject additional equity. Managing the relationship with your lender and keeping them informed of progress is crucial to a successful development.

Joint Ventures, Development Partnerships, and Risk Allocation

Many developments involve multiple parties—perhaps the landowner wants to participate in the development profit rather than simply selling the land, or you're partnering with another developer to share risk and capital. A joint venture or development partnership agreement structures these relationships, setting out who contributes what (land, capital, expertise), how profit or loss is shared, who makes decisions, what happens if a party wants to exit, and how disputes are resolved.

Key issues in these structures include: governance (is it a partnership where all parties have voting rights, or a limited partnership where one party manages the development?); capital contributions and how they're funded; profit sharing (does the landowner get a share of profit, or are they simply paid a land price?); decision-making authority (who can bind the partnership or make key decisions?); what happens if a party breaches its obligations or becomes insolvent; exit mechanisms; and dispute resolution. I help structure these relationships in a way that aligns incentives and minimises conflict. For instance, a structure where all parties benefit from early completion and cost control tends to work better than one where parties have conflicting interests on those points.

Frequently Asked Questions

What's the difference between an option agreement and a promotion agreement?

Both are mechanisms for controlling land without owning it. An option agreement gives you the right to purchase the land on predetermined terms if certain conditions (usually planning permission) are met. You typically pay the landowner an option fee upfront, then exercise the option only if planning is obtained. A promotion agreement is similar but usually involves a developer taking development risk in exchange for a larger share of the development profit—for example, the landowner might retain 30% of profit and the developer takes 70% plus cost recovery. Option agreements are cleaner if you want to own the land; promotion agreements work well if the landowner wants to stay involved but doesn't want to fund development costs.

How long does it take to get planning permission, and what if it's refused?

The local authority has 13 weeks to determine a planning application (or longer if you've agreed). The application might be approved, refused, or approved with conditions. If refused, you can appeal to the Planning Inspectorate (England), which has further timescales. The appeal process can take 6-18 months depending on complexity and whether it goes to a public inquiry. If permission is refused, you can reapply with a different proposal or a more comprehensive application. Market conditions, local authority policy, and the strength of your application all affect prospects. I advise on the planning landscape and whether permission is likely. Sometimes the best approach is negotiating with the local authority before submitting formally, to understand their concerns and shape your application accordingly.

What happens if construction costs overrun and I can't pay the contractor?

Significant cost overruns are a common development risk. Your options depend on your development finance. If you have retained equity or additional borrowing available, you might inject additional capital. If not, you might need to negotiate with the contractor for extended payment terms, defer some works, or seek additional finance from your lender (if they're willing to increase the loan). If you genuinely can't pay, and you breach the construction contract, the contractor might stop work, and you could face serious consequences—they might claim payment through the courts, seek a winding-up order against you (if you're a company), or place a lien on the property (preventing sale or mortgage). The best approach is careful cost planning and budgeting upfront, with contingency for overruns. I advise on structuring contracts to control costs and on managing relationships with contractors when money is tight.

What happens if the construction contract is with a limited company and they go insolvent?

If your main contractor becomes insolvent mid-project, it's a serious problem. You'll typically need to appoint a new contractor to complete the works, which costs money and time. Your protections depend on your contract and whether you've retained money from payments. Some contracts include parent company guarantees or bonds that protect you against contractor insolvency. The contract should specify what happens if the contractor goes insolvent—usually, it's grounds for termination and appointing a new contractor at the failed contractor's cost. However, enforcing this can be difficult if the contractor has limited assets. The best protection is vetting contractors thoroughly, requiring bonds or guarantees for significant works, and retaining money from each payment until defects are rectified.

What are the main costs in a development project beyond the construction contract?

Beyond construction, major costs include: land acquisition (the purchase price or option fee); professional fees (architects, engineers, surveyors, planners, lawyers—typically 5-15% of build cost depending on project complexity); planning contributions (affordable housing, infrastructure, highways improvements—these can be 10-20% of development value); finance costs (interest on the development loan); insurance (professional indemnity, contractors' all-risks, buildings insurance); compliance and certification costs; and contingency for unforeseen costs. For a £10 million development, professional fees might be £500,000-£1.5 million, planning contributions could be £1-3 million, and finance costs depend on how long the project takes. I help you develop a detailed cost plan upfront so you understand the full cost picture before committing.

What's a development monitor, and why do lenders insist on one?

A development monitor (often a surveyor appointed by your lender) oversees the project on the lender's behalf. They visit site regularly, check progress against the approved programme, certify that cost is being controlled, and confirm that works are being carried out in accordance with the contract and to required standards. They effectively protect the lender's security by ensuring the development is viable and the land value is maintained. For you, the development monitor can be helpful (they provide independent oversight and can flag issues early) or burdensome (if they're overly cautious or obstruct progress). Cooperative relationships usually work best—view them as an ally in keeping the project on track rather than an adversary. Their fees are typically charged to the project cost and repaid from loan drawdowns.

Should I use a fixed-price or cost-plus construction contract?

This depends on your circumstances. A fixed-price contract shifts cost risk to the contractor, which incentivises efficiency but might lead to disputes if unexpected issues arise (the contractor may claim a variation and additional cost). A cost-plus contract is more flexible—you pay actual costs, so unexpected issues are managed more easily—but you bear cost risk and there's less incentive for the contractor to control costs. A hybrid approach might use a fixed price for the main structure but cost-plus for specialist works that are harder to define upfront. For major projects, I often recommend a more collaborative form like NEC4, which encourages early dialogue about risks and variations. The choice depends on how well the works can be defined upfront, the track record of your contractor, and your risk appetite.

What should I include in a joint venture agreement for a development?

A development joint venture agreement should cover: how the parties contribute (land, capital, expertise); profit or loss sharing (how is value distributed between parties?); governance and decision-making (who has authority to make key decisions? Is there a managing partner?); work obligations (what is each party responsible for?); finance arrangements (how is the development funded? Who borrows from the lender? How are debt repayments managed?); conditions precedent (what needs to happen before the JV is triggered—planning permission, for example?); what happens if a party can't or won't perform; exit mechanisms (how can a party exit? What happens if they want to sell their interest?); and dispute resolution (what happens if the parties disagree?). I help structure these agreements to align incentives and minimise conflict as the project progresses.

If you're planning a development project, get legal advice early—at the option or land acquisition stage. A well-structured development agreement saves money and headaches later. Contact me to discuss your project structure.

Get in touch for a no-obligation initial conversation about your matter.