Overview
The Parkwall house, also known as the Lindsay Parkinson, Outinard Parkinson, or simply Parkinson house, is a system-built property developed during the 1960s. Manufactured by Sir Lindsay Parkinson & Co., approximately 3,100 units were constructed to address post-war housing shortages across the UK.
These properties were designed to provide functional, cost-effective housing using prefabricated components that could be assembled rapidly during a period of significant urban expansion.
Parkwall houses were primarily built in the 1960s by Sir Lindsay Parkinson & Co. and are a recognised form of non-traditional construction from the post-war housing programme.
Typical characteristics & construction
Parkwall houses are commonly found as bungalows or two-storey terraced houses. Roofs are generally of medium pitch gable form covered with concrete tiles, although some examples incorporate flat roofs finished with asphalt or bituminous felt.
Front and rear elevations are clad with plywood, often finished with Arpax or similar surface treatments. Flank walls are constructed in brick. The structural system incorporates reinforced concrete elements, forming part of the main frame.
| Element | Typical construction | Inspection focus |
|---|---|---|
| Roof | Medium pitch gable with concrete tiles or flat roof with asphalt/bituminous felt | Tile condition, felt deterioration, signs of leakage or water ingress |
| Front & rear walls | Plywood cladding with Arpax or similar finish | Rot, delamination, cracking, surface breakdown |
| Flank walls | Brick construction | Cracking, spalling, mortar deterioration |
| Main frame | Reinforced concrete elements | Evidence of corrosion, cracking, spalling |
| Floors | Solid or suspended construction (varies) | Unevenness, sagging, moisture-related damage |
Potential hazards & inspection priorities
Deterioration of plywood cladding is a recognised issue. Prolonged exposure to weather can result in rot, warping, and delamination, particularly where maintenance has been limited.
Flat roofs finished with asphalt or bituminous felt are vulnerable to cracking, blistering, and water penetration. Where leaks develop, internal damage and concealed decay can follow.
Reinforced concrete components require careful assessment. Corrosion of embedded steel reinforcement can lead to cracking and spalling, with potential implications for structural stability. Reference is commonly made to guidance such as BRE Digest 444 (Parts 1–3) and BR 254 when assessing durability.
Water ingress is frequently associated with failed cladding or roofing materials and can lead to dampness, mould growth, and internal deterioration.
Is this house right for you?
Parkwall houses represent a specific form of 1960s system-built construction. Purchasers should understand the implications of plywood cladding, reinforced concrete elements, and flat roof detailing where present.
- Arrange a comprehensive building survey
- Review maintenance and repair history carefully
- Assess evidence of cladding renewal or roof replacement
- Consider the condition of any exposed concrete elements
Ongoing maintenance and timely repairs are essential to preserve structural integrity and weather resistance.
Mortgage & resale considerations
Lender acceptance for non-traditional properties varies and is influenced by construction type, condition, and clarity of professional reporting.
Clear documentation of repairs, absence of significant unresolved defects, and evidence of effective maintenance are commonly relevant factors when assessing mortgage suitability and resale prospects.
What a survey can — and cannot — tell you
A building survey provides an informed assessment of the visible condition and construction of a Parkwall house. Inspections are non-intrusive and limited to areas that are accessible at the time of inspection.
- Identify visible deterioration to plywood cladding and surface finishes
- 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 reinforced concrete elements
- Assess hidden structural components behind cladding or internal linings
- Determine the full extent of concrete carbonation or internal corrosion
- 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 Parkwall 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.
