Development Funding Rates & Costs Guide
Understanding development funding rates and the true cost of borrowing is critical when assessing whether a project is viable, fundable, and ultimately profitable. While headline pricing often attracts the most attention, total borrowing cost is also shaped by fees, timing, facility structure, and project delivery risk.
Headline interest rates often receive the most attention, but in practice they are only one part of the overall picture. The real cost of borrowing is shaped by the full structure of the facility, the timing of the project, and how effectively the development progresses from acquisition through to exit.
Developers who focus only on securing the lowest headline rate often overlook the more significant cost drivers that emerge over the course of a project.
How Development Funding is Priced and Assessed
Development funding rates are not set in isolation. Lenders price facilities according to a combination of project-specific and borrower-specific risk factors.
Typical pricing considerations include:
• Loan-to-Cost and Loan-to-GDV ratios
• Developer track record and experience
• Scheme complexity and build type
• Location and local market demand
• The clarity and credibility of the exit strategy
A well-structured project with conservative assumptions and a clearly evidenced exit will often achieve more competitive pricing than a highly leveraged scheme relying on optimistic GDV projections.
This is why two projects of similar size can attract materially different terms.
Interest Rate vs Total Cost
One of the most common misconceptions in development finance is that the cheapest rate automatically produces the cheapest overall deal.
In reality, total cost is influenced by a combination of:
• The interest rate itself
• How quickly the facility is drawn and repaid
• The level of fees attached to the facility
• Delays to the build or exit strategy
• Whether additional borrowing or restructuring is needed during the term
A slightly higher rate on a well-structured project that completes on time can often outperform a lower-rate facility that experiences delays, cost overruns, or exit problems.
The Main Costs to Account For
Interest is only one part of the cost stack. A realistic appraisal should also account for the wider costs attached to the facility.
Typical development finance costs include:
• Arrangement fees — often around 1–2% of the facility
• Exit fees — applied by some lenders depending on structure
• Monitoring surveyor fees — usually payable throughout the build
• Valuation fees — dependent on project size and complexity
• Legal fees — borrowers will usually cover both sides
• Broker fees — where applicable, depending on the structure of the deal
These costs should be built into the appraisal from the outset rather than treated as secondary items.
Why Time Is Often the Biggest Cost Driver
While rates and fees are important, time is often the factor that has the greatest effect on the total cost of development funding.
The longer a facility remains in place, the greater the interest exposure and the higher the total borrowing cost.
Common causes of cost overruns include:
• Planning delays
• Building warrant delays
• Contractor availability and programme slippage
• Slower-than-expected sales or refinancing at exit
• Delays to practical completion or certification
Even relatively small delays can materially affect profitability, particularly on larger schemes or projects operating with tighter margins.
Developer Insight – Time Risk Is Cost Risk
Every additional month on a development facility increases interest exposure.
Developers who build realistic programmes — including contingency for approvals, valuation timings, contractor availability and exit — generally achieve better cost outcomes than those relying on best-case assumptions.
A Practical Example
Consider two similar development projects.
• Project A secures a slightly lower headline rate but experiences a three-month delay caused by planning and contractor issues
• Project B secures a marginally higher rate but completes on time with a pre-agreed exit route
Despite the lower initial rate, Project A may still incur a higher overall funding cost because interest continues to accrue during the delay and associated costs build up around the extended programme.
That is why experienced developers focus on certainty, timing, and execution rather than headline rate alone.
Scotland-Specific Cost Considerations
When modelling a development appraisal for a Scottish scheme, there are several practical factors that can affect both timing and total borrowing costs.
These may include:
• Building warrant requirements, which can affect drawdown timing and project start dates
• LBTT, which can materially influence acquisition costs
• Conservative valuation assumptions in certain markets or asset classes
• Local authority variations that influence planning and approval timelines
These are not reasons to avoid development in Scotland, but they do need to be reflected in a realistic appraisal.
Structuring Funding to Reduce Cost Pressure
Not every cost can be eliminated, but many cost pressures can be reduced through stronger preparation and better structuring.
Developers can improve cost outcomes by:
• Presenting fully documented funding proposals
• Using realistic build programmes rather than optimistic schedules
• Aligning drawdown schedules with actual build phases
• Securing exit strategies early where possible
• Working with lenders that understand the type of scheme being delivered
The objective is not simply to minimise headline pricing, but to create a funding structure that supports delivery of the project without unnecessary delays or friction.
Cost Planning Matters More Than Headline Pricing
The most reliable development appraisals are not always the ones showing the lowest headline rate. They are the ones that allow for:
• realistic timing assumptions
• full cost visibility
• appropriate contingency
• and a credible route to exit
Projects built on optimistic assumptions often appear cheaper on paper, but carry significantly greater real-world cost risk once delivery begins.
Understanding Costs in the Wider Funding Context
If you want a broader overview of how development funding is structured in Scotland — including leverage, drawdowns, lender requirements and what is typically needed for approval — see our main guide to Property Development Finance in Scotland.
Related Reading
To understand how lenders classify residential, mixed-use and commercial schemes, see: 👉 Property Development Asset Types Explained
For current market conditions influencing lender appetite and development activity across Scotland, see: 👉 Scottish Property Development Trends 2025–2026