Mortgage guide
Concrete construction houses mortgages
Concrete construction house mortgages apply to properties built using non-traditional concrete systems. In buy to let lending, mortgage ability depends on the specific construction method and repair status rather than the presence of concrete itself. Some systems are widely accepted, while others remain restricted.
- Published
- 13 Apr 2026
- Last reviewed
- 11 Sep 2026
- Reading time
- 2 min
Concrete construction houses mortgages
Concrete construction house mortgages apply to properties built using non-traditional concrete systems. In buy to let lending, mortgage ability depends on the specific construction method and repair status rather than the presence of concrete itself. Some systems are widely accepted, while others remain restricted.
Why lenders care about concrete construction
Certain historic concrete systems were later found to deteriorate over time, affecting structural integrity. This creates valuation uncertainty, resale risk, and insurance complexity, all of which directly influence lender appetite.
What lenders typically look for
Lenders expect the construction system to be clearly identified and, where applicable, evidence of approved structural repair. Valuer confirmation that the property is marketable and insurable is central to acceptance.
Common reasons cases fail
Applications often fail where the construction type is unknown, repairs have not been completed, or the valuer expresses concerns about long-term durability or resale demand.
How mortgage ability can be improved
Providing system identification reports, repair certification, and specialist valuation commentary can materially improve outcomes.
Buy to let considerations for concrete houses
Buy to let lenders prioritise exit certainty over yield, making valuation confidence particularly important for non-standard stock.
Buy-to-let calculator
Related case studies
Frequently asked questions
Are concrete construction houses mortgageable?
Yes. Concrete construction houses can be mortgageable, but eligibility depends on the specific construction system used and whether any recognised defects have been repaired. Lenders require valuer confirmation that the property is structurally sound and marketable.
Are buy to let rules stricter for non-standard construction?
Sometimes, but not always. TSB's buy to let criteria list thatched properties as unacceptable, and SBI UK's buy to let criteria list Colt bungalows and BISF as unacceptable, types that some other lenders consider for residential lending. Other lenders apply the same construction rules to both: The Mortgage Works treats thatch and masonry-clad timber frame built in 1970 or later as traditional construction on normal buy to let terms, Virgin Money's repaired-PRC conditions are the same for residential and buy to let, and Together's 65% maximum for property it classes as non-standard applies across its regulated and buy to let ranges, subject to the product and to Together's full assessment (criteria checked 29 September 2026). The lender's policy for the intended use is what counts. These are examples of individual lenders' published rules, which can change; they do not show which lenders Mortgage Lane uses or decide any application.
Can I buy a second house with a mortgage?
Yes. Lenders assess affordability including your existing mortgage commitments. Higher deposits are commonly required for second homes.
Can I buy my parents' house with a mortgage?
Yes, subject to the lender's normal checks on affordability, credit and the property. If your parents sell to you below market value, many lenders treat the discount as a gift of equity that can count towards the deposit, while others lend only on the price you pay and need a cash deposit. Lenders that accept it usually want the gift to be unconditional, the sale reported by the solicitors and your parents to move out, and both sides should take independent tax advice.
Can I turn my house into a buy-to-let?
Yes, you can turn your house into a buy to let by either obtaining consent to let from your current lender or remortgaging onto a buy to let mortgage. Long-term letting usually requires a formal buy to let product.
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