Self Build Mortgages

Which Type of Self Build Mortgage Should I Choose?

There are two types of self build mortgage available:

  • The arrears type, where the stage payments are given as each stage of the build is reached
  • The advance type, where the stage payments are released at the start of each stage of the build

The arrears-type self build mortgage is suitable for those who have a large cash injection of their own to put into the project.

The advance stage payment mortgage means that the money is in their bank and available at the point of need when labour and materials bills fall due — removing the need for short-term borrowing/bridging loans to cover the shortfall.

  • The cost of borrowing is generally higher than other arrangements due to the level of ‘risk’
  • Very few lenders offer this facility too
  • Currently advance funding may only be secured on a Single Premium Policy, which provides additional security to the lender. The cost of this premium is high
  • 10% of total borrowing will be retained until Building Control has issued a completion certificate

Have an open dialogue with all of your contributors to ensure the lender’s stage release funding model is compatible with their payment terms.

Cash flow management is critical.

Where Are You Going to Live During the Works?

Where you intend to live while you build will have an impact on your affordability to borrow monies to build your dream home. For instance, the monthly rental payments or mortgage payments will have an impact on your affordability calculation.

Some lenders will accept you making upfront rental payments, which will not have an impact on your monthly income versus expenditure.

What Build System Do You Plan to Use?

Some lending institutions will not lend on certain types of construction, so do ensure you check with them. Of course, all your design and construction methods will need to be compliant with the current Building Regulations.

Each lender’s criteria are different, but you do need to ensure they are aware of your build type and of the payment terms and conditions your supplier has stipulated.

Do not agree any payment schedule with your builder or suppliers until you know how your lender will release funds to you.

What’s Your Estimated Build Cost?

Some lenders require that you must work to a fixed build cost budget; others may request that a qualified quantity surveyor provides the information on the build costs. Check with your lender what they require. Also, ensure that you include a minimum of a 20% contingency built into your build cost estimate.

In addition, as part of your full project costs and budget control estimate that you provide your lender with, you’ll need to identify (or at the very least estimate) the following costs:

  • Land purchase and associated fees
  • Project management, including health and safety compliance
  • Gaining planning consent, if not already achieved, and associated fees
  • Demolition and/or site preparation
  • Construction design fees
  • Construction costs (preferably estimated against Building Regulations drawings).

You must demonstrate to the lender that you will have sufficient funding ability and competence in place to complete the project.

The supporting documentation required is essentially the same as a standard mortgage.

Additional supporting documentation required will typically include:

  • Copy of planning permission
  • Copy of construction drawings and specifications
  • Copy of total project cost estimate (where possible, fixed-price contracts)
  • Copy of Building Regulations approval
  • Copy of site insurance and structural warranty
  • Architect’s professional indemnity cover (if required)
  • SAP calculation (this will be in the Building Regulations package)
  • Experian credit report.

An initial valuation will be carried out to establish current value and anticipated end value, too. You will be required to pay the valuation fees. Interim and final valuations will also be requested and carried out by a RICS valuer.

The reports will be presented to the lender to evidence the increase of the interim value(s) prior to interim and final release of funds from the lender. Again, you, the client, will pay the valuation fees.

  • A typical timescale for processing a stage release mortgage is up to three months
  • Consultants, brokers, banks and building societies will carry out a forensic analysis of all supporting documents
  • In particular, they will focus on income and expenditure cross checked with the bank statements

How Much Does it Cost to Self Build?

On average, your self build costs will be somewhere between £1,000 and £3,000/m².

You will also need to be aware of all the factors that may cause your build costs to go through the roof:

  • Location: land prices and labour costs will vary across the country
  • Size: the bigger the house, the more expensive it will be to build (although careful design can help achieve some economies of scale)
  • Plan, shape and layout: the simplest and most cost-effective floorplan is square
  • Number of storeys: multiple storeys make better use of the land and can reduce foundation and roof costs per m²
  • Specification: if you want premium products, expect your build costs to rise considerably
  • Involvement: depending on how much of the work you are capable of taking on yourself, you can substantially reduce your build costs

When Are Funds Released?

Self Build

  • Land (with the minimum of outline planning consent)
  • Substructure
  • Wallplate/eaves height (just before the roof trusses go on)
  • Wind and watertight roof tiled
  • First fix
  • Second fix
  • Certified completion

Renovation or Conversion

  • Purchase of existing structure
  • Inspected completion of structural survey and cost estimate of necessary works
  • Completion of load bearing elements
  • First fix
  • Second fix
  • Certified completion

Custom Build or Group Self Build

  • Purchase of land
  • Associated preliminary costs and substructure
  • Construction to wind and watertight stage
  • First fix
  • Second fix and completion

Site Insurance and Structural Warranties

A bank or building society may not release initial funds until you can demonstrate that you have a 10-year structural warranty policy in place. When taking out your warranty, it’s also a good time to ensure that you have the right site insurance policy in place to give you peace of mind should anything go wrong.

Such policies are offered by providers such as:

  • Self Build Zone
  • Q Assure Build
  • Protek
  • NHBC Solo
  • Premier Guarantee
  • LABC

Anyone undertaking a build project, whether borrowing or not, should have both in place prior to starting work on site.

Subject to affordability, banks and building societies are keen to lend on residential construction projects, providing you have carried out due diligence and engaged the appropriate team(s) to achieve the successful construction of your new home.

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