Overview
The Farrans No-Fines house emerged during the 1960s as part of the wider post-war response to housing shortages across the UK. Constructed by Farrans Construction, these properties utilised an alternative concrete system intended to deliver durable housing efficiently.
The term “No-Fines” refers to the concrete mix used in the wall construction, which excluded fine aggregates such as sand. This resulted in a porous but robust material that differs significantly from traditional brick-and-block construction.
Approximately 1,000 units were constructed, predominantly in urban and suburban locations. These properties were designed to provide affordable, practical accommodation during a period of urgent demand.
Farrans No-Fines houses are typically two-storey terraced properties constructed using no-fines concrete for the external walls, finished with a full render coating and covered by a medium-pitch tiled roof.
Typical characteristics & construction
Farrans No-Fines houses are generally two-storey terraced dwellings. The most distinguishing feature is the use of no-fines concrete for the external walls, finished with render. The omission of fine aggregates in the concrete mix gives the wall structure a distinctive texture beneath its coating.
Roofs are commonly of timber construction incorporating rafters and purlins, finished externally with tiles. Internally, details relating to separating walls, partitions, floors and ceilings are less clearly documented, requiring careful on-site assessment during inspection.
| Element | Typical construction | Inspection focus |
|---|---|---|
| Substructure | Limited documentation available | Evidence of movement, cracking and general structural stability |
| External walls | No-fines concrete with rendered finish | Cracking, spalling, render failure, moisture penetration |
| Separating walls & partitions | Not well documented | Structural integrity and signs of damage |
| Ground & first floors | Limited available information | Wear, distortion, structural concerns |
| Ceilings | Construction details not well documented | Sagging, staining, water ingress |
| Roof | Timber purlins and rafters with tiled covering | Tile condition, timber decay, signs of leakage |
Potential hazards & inspection priorities
The primary structural concern relates to the performance of the no-fines concrete walls. Over time, cracking and spalling can develop. Where protective render coatings deteriorate, the underlying concrete becomes more vulnerable to moisture penetration and progressive deterioration.
The porous nature of the concrete can also contribute to moisture ingress if detailing, finishes or maintenance have been inadequate. Dampness and mould may arise where insulation and ventilation are insufficient.
Timber elements within the roof structure require careful inspection. Prolonged exposure to moisture can lead to decay, particularly if roof coverings have been poorly maintained.
Farrans No-Fines houses are not classified as defective under the Defective Premises Act. Nevertheless, condition varies significantly depending on maintenance history and prior repairs.
Is this house right for you?
Purchasers considering a Farrans No-Fines house should understand that it differs from traditional masonry construction. Condition, maintenance and quality of previous repairs will heavily influence performance.
- Commission a detailed building survey
- Review evidence of external wall repairs and render maintenance
- Assess roof condition and timber elements carefully
- Ensure adequate insulation and ventilation are present
These properties can provide durable accommodation where properly maintained, but deterioration of the wall system should not be overlooked.
Mortgage & resale considerations
Mortgage lending decisions for non-traditional construction depend largely on construction type and condition. Clear reporting on the integrity of the no-fines concrete and associated finishes is often influential.
Evidence of unresolved cracking, moisture ingress or structural deterioration may lead to further investigation or lender caution. Conversely, documented maintenance and satisfactory survey findings can provide reassurance.
What a survey can — and cannot — tell you
A building survey provides an informed assessment of the visible condition and construction of a Farrans No-Fines house. Inspections are non-intrusive and limited to areas that are accessible at the time of inspection.
- Identify visible cracking to no-fines concrete walls and associated render
- Assess signs of dampness, moisture ingress, and condensation risk
- Comment on roof coverings, drainage details, and external envelope condition
- Review the general condition of accessible floors, ceilings, and structural elements
- Highlight defects that may require repair, monitoring, or further investigation
However, there are limitations to what a survey can determine without intrusive investigation.
- Confirm the condition of concealed reinforcement within no-fines concrete
- Assess hidden structural elements behind finishes or linings
- Determine the full extent of carbonation or internal concrete deterioration
- Inspect areas that are inaccessible or covered at the time of inspection
Where higher-risk indicators are identified, further specialist or intrusive investigation may be recommended.
For a thorough building survey in Greater London, an instant quotation can be obtained through the online survey calculator.
Considering a Farrans No-Fines house?
A detailed building survey can help clarify construction-specific risks before committing to a purchase.
Get your instant survey quoteDisclaimer: This article is provided for general educational purposes only and is based on industry research, professional knowledge, and experience. It does not relate to any specific property and should not be relied upon when making a purchasing decision. Prospective purchasers should always commission an independent RICS-qualified surveyor to conduct a full inspection and provide a report on the actual condition of any property of interest.
