5. Full Cost Breakdown

Underestimating costs is one of the primary reasons buy-to-let underperforms.

5.1 Stamp Duty (including surcharge)

Buy-to-let purchases typically incur:

  • Standard Stamp Duty

  • An additional surcharge

This is a non-recoverable capital cost that affects total return.

5.2 Legal fees and surveys

Transaction costs include:

  • Conveyancing fees

  • Mortgage arrangement fees

  • Valuation and surveys

Cutting corners here increases downstream risk.

5.3 Renovation and furnishing costs

Initial setup may include:

  • Safety upgrades

  • Cosmetic work

  • Furniture and appliances

Renovation overruns are common — buffers matter.

5.4 Maintenance and repairs

Maintenance is not optional.

Costs vary over time and tend to:

  • Cluster unexpectedly

  • Increase with property age

Annual allowances reduce surprise and stress.

5.5 Insurance

Typical policies include:

  • Buildings insurance

  • Landlord liability

  • Optional rent protection

Insurance reduces risk severity, not probability.

5.6 Letting agent fees

Management may include:

  • Tenant sourcing

  • Ongoing management

  • Renewal fees

Fees reduce cashflow but can reduce time and operational risk.

5.7 Unexpected costs buffer

Unexpected costs include:

  • Emergency repairs

  • Regulatory changes

  • Legal disputes

Buffers are not pessimism — they are risk pricing.

Core principle

Buy-to-let succeeds when deals survive bad scenarios, not when they look good in perfect ones.

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