Construction Industry Scheme

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by Ravi Shantilal

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Specialist Mortgage Advice for Construction Workers

Getting a mortgage while working in the construction industry does not need to be complicated — it simply requires the right lender and the right mortgage advice.

Many high street lenders still struggle to properly assess CIS income and often treat construction workers as fully self-employed applicants, requiring multiple years of accounts and tax returns. This can significantly reduce borrowing potential and fail to reflect your true earning capacity.

At SNS Mortgages & Financial Services, we specialise in helping construction workers, subcontractors, tradespeople, and site professionals secure mortgages using CIS income. By working with lenders who understand the Construction Industry Scheme (CIS), we help ensure your income is assessed fairly using gross CIS earnings rather than reduced net profits.

This can dramatically improve your borrowing potential compared to traditional self-employed mortgage assessments.


What Is a CIS Mortgage?

A CIS mortgage is designed for workers paid under the Construction Industry Scheme.

Although CIS workers are technically self-employed, many specialist lenders take a more flexible approach when assessing affordability.

Instead of relying solely on company accounts or net profits, CIS-friendly lenders may assess applications using:

  • CIS payslips
  • CIS statements
  • Gross contract income
  • Recent earnings history

This often provides a far more accurate reflection of a construction worker’s real income.


Key Differences Between CIS Mortgage Lenders

Mortgage lenders can assess CIS income very differently.

The main differences usually include:

Employment Classification

Some lenders treat CIS workers similarly to employed applicants, using CIS payslips directly for affordability assessments.

Minimum CIS History

Some lenders accept as little as 3 months of CIS history, while others may require 12 months or longer.

Income Calculation Methods

Lenders may annualise CIS income differently using:

  • 46-week calculations
  • 48-week calculations
  • 52-week calculations
  • Average earnings across several months

Choosing the right lender can make a substantial difference to borrowing potential.

At SNS Mortgages & Financial Services, we help match construction workers with lenders best suited to their circumstances and income structure.


Which Lenders Accept CIS Income?

Some lenders assess CIS workers using gross CIS income, while others still treat applicants as fully self-employed.

Lenders using CIS income directly may provide significantly higher borrowing potential compared to lenders relying solely on tax returns or company accounts.

Different lenders have different approaches depending on:

  • CIS history
  • Income consistency
  • Employment structure
  • Deposit size
  • Credit profile

Working with the right lender is essential to maximise borrowing potential.


Minimum CIS History Required

Every lender has different requirements regarding how long you need to have worked under the Construction Industry Scheme before applying for a mortgage.

Some lenders may accept:

  • 3 months of CIS history
  • 6 months of CIS history
  • 12 months or more for stronger applications

Applicants with longer CIS histories may have access to a wider range of lenders and mortgage products.


How Lenders Calculate CIS Income

Different lenders use different methods to calculate CIS income.

Common methods include:

Recent Income Averaging

Some lenders average the most recent 3 months of CIS income, which can benefit applicants with strong recent earnings.

Longer-Term Averaging

Other lenders may average earnings over 6 or 12 months to provide a more consistent assessment.

Annualised Income Calculations

Certain lenders annualise CIS income using working weeks throughout the year, often using 46 to 52 weeks depending on the lender’s policy.

The method used can significantly impact the amount you are able to borrow.


Benefits of a CIS Mortgage

CIS mortgages can provide several advantages for construction workers and subcontractors.

Key benefits include:

  • Higher borrowing potential
  • Income assessed using gross earnings
  • Reduced reliance on company accounts
  • Flexible affordability assessments
  • Acceptance with shorter trading histories
  • Access to specialist lenders familiar with CIS income

Using the right lender can substantially improve mortgage options for construction professionals.


How Much Can CIS Workers Borrow?

Most CIS workers can typically borrow between 4.5 and 5 times annual income, although some lenders may offer higher income multiples for strong applicants.

Borrowing potential depends on factors such as:

  • Daily or weekly CIS earnings
  • Deposit size
  • Credit history
  • Existing financial commitments
  • Employment history
  • Income consistency

The way CIS income is calculated can have a major impact on affordability and borrowing levels.


Are Mortgage Rates Higher for CIS Workers?

No. CIS mortgage rates are generally the same as those available to employed applicants.

The difference is usually based on lender criteria and affordability calculations rather than higher pricing.

Working with a lender that properly understands CIS income helps ensure you are assessed fairly without unnecessary restrictions.


What Deposit Is Required for a CIS Mortgage?

Many CIS-friendly lenders accept deposits starting from 5%, although larger deposits may improve mortgage rates and approval chances.

Deposit requirements can vary depending on:

  • Credit profile
  • Loan size
  • Property type
  • Income history
  • Overall affordability

Do CIS Workers Need Accounts?

Not always.

Many CIS lenders are happy to assess applications using CIS payslips and statements rather than requiring full company accounts or tax returns.

However, some mainstream lenders may still request:

  • Two years of accounts
  • SA302 tax calculations
  • Tax year overviews

Choosing a lender that properly understands CIS income can simplify the process considerably.


Can CIS Workers Get a Mortgage With Bad Credit?

Yes, it is possible for CIS workers with adverse credit to secure a mortgage, although lender options may be more limited.

Factors that may improve approval chances include:

  • Larger deposit sizes
  • Stable CIS income
  • Lower existing debt levels
  • Improved recent credit conduct

Specialist lenders may offer more flexible options depending on the severity of previous credit issues.


What Documents Are Required for a CIS Mortgage?

Lenders will usually request documents such as:

  • CIS payslips or CIS statements
  • Proof of identity
  • Bank statements
  • Proof of deposit
  • Supporting income documentation

Compared to traditional self-employed applications, CIS mortgages can often involve significantly less paperwork.


Common Mistakes CIS Workers Should Avoid

Many construction workers reduce their borrowing potential by applying directly with lenders that do not understand CIS income structures.

Common mistakes include:

  • Applying with lenders requiring full accounts unnecessarily
  • Applying after temporary income reductions
  • Not presenting income correctly
  • Choosing lenders with unsuitable affordability models

Working with a specialist adviser can help avoid these issues and improve approval chances.


Why Use a Specialist CIS Mortgage Broker?

At SNS Mortgages & Financial Services, CIS mortgages are one of our specialist areas.

We understand how construction workers are paid and know which lenders offer the most flexible and competitive mortgage criteria for CIS applicants.

Our team can help:

  • Identify suitable lenders
  • Maximise borrowing potential
  • Present CIS income correctly
  • Simplify the mortgage process
  • Improve approval chances

Whether you are a subcontractor, tradesperson, site manager, or experienced construction professional, we can help you secure the right mortgage solution based on your circumstances.

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