How Our Level 3 Home Survey Uncovered Significant Hidden Risks in a 1930s Family Home
Background
Our surveyors were instructed to carry out a RICS Level 3 Home Survey on a traditionally constructed two-storey semi-detached house dating from circa 1930–1950, located in an established residential area of Greater Manchester.
The property had been extended to the rear with a single-storey addition and had undergone various alterations over time. While the house appeared well presented on first inspection, its age and previous works meant a more detailed Level 3 Survey was the most appropriate choice.
Key Findings
Our inspection identified a number of defects that were not immediately obvious during a viewing but carried significant cost and risk implications for the buyer.
Chimney Stack Deterioration and Internal Damp
Loose masonry, perished mortar joints and vegetation growth were present to the shared chimney stack.
Gaps around lead flashings were allowing moisture ingress.
High damp meter readings were recorded internally to the rear bedroom chimney breast.
Partial rebuilding and repointing of the chimney stack was recommended.
Chimney stack showing loose masonry, vegetation growth and perished mortar
Roof Defects to the Rear Extension
Torn and loose lead flashings at the junction with the main wall.
Gaps allowing water to penetrate into the roof structure.
Roof underlay did not discharge correctly into the gutter, increasing long-term damp risk.
Immediate repairs were advised to prevent further deterioration.
Torn and loose flashings to the rear extension roof
Cavity Wall Tie and Insulation Concerns
Localised bulging to the front elevation raised concern over possible wall tie corrosion.
Neighbouring properties had already undergone remedial wall tie works.
The type and condition of cavity wall insulation could not be confirmed.
A specialist invasive investigation was recommended to establish the extent of remedial works required.
Window Installation Defects and Damp
A staircase window had been incorrectly installed flush with the outer brickwork rather than recessed.
High moisture readings were detected around the internal window reveal.
Reinstallation or replacement of the window was advised to prevent recurring damp issues.
Incorrectly installed staircase window flush with outer brickwork
Inadequate Sub-Floor Ventilation
The suspended timber ground floor lacked sufficient ventilation.
This significantly increases the risk of condensation, timber decay and future structural issues.
Additional air bricks and improved ventilation were recommended.
Inadequate sub-floor ventilation compared with neighbouring property
Fire Safety Risks
Battery-only smoke detectors were present, with no mains-powered system installed.
No heat detector was installed in the kitchen.
Gaps within the party wall in the roof space compromised fire separation.
Improvements were advised to bring safety provisions closer to modern expectations.
Why This Matters
Many of these issues were hidden defects that could easily be missed during a standard viewing or even a more basic survey. Left unresolved, they could result in:
Escalating damp and timber decay
Structural damage linked to wall tie failure
Increased fire safety risk
Unexpected repair bills running into many thousands of pounds
The Level 3 Survey provided the buyer with a clear understanding of both the urgency and likely cost of repairs, allowing informed decisions to be made before committing to purchase.
Outcome and Value for the Buyer
Armed with our detailed findings and cost guidance:
The buyer was able to renegotiate the purchase price to reflect the required works.
High-risk defects were identified before exchange, avoiding future financial shock.
The survey delivered peace of mind, ensuring no major issues were overlooked in a property of this age.
This case clearly demonstrates how a RICS Level 3 Home Survey can protect buyers from unforeseen liabilities and strengthen their negotiating position.
Why Choose CJ Bloor Property Consultants?
At CJ Bloor Property Consultants, our RICS-accredited surveyors specialise in identifying hidden defects in period and traditionally built homes. We go beyond surface-level observations to provide:
Clear, practical advice
Transparent repair priorities
Cost awareness that supports confident decision-making
If you’re purchasing an older or altered property, a Level 3 Home Survey could save you thousands and give you complete clarity before you proceed.
👉 Contact CJ Bloor today to book your RICS Home Survey and buy with confidence.
