Buying Guide
Maisonette survey: what to check before buying
A maisonette looks like a halfway point between a flat and a house, but the ownership structure matters more than the name. Some maisonettes are leasehold with shared repair obligations; some have private entrances, gardens and roofs; some sit above shops or below another home. The survey and legal pack need to agree on exactly what the buyer owns and maintains.
Last updated: 6 May 2026. Editorially reviewed: 20 May 2026.
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Run a free previewWhat makes this property type distinctive
Maisonettes are self-contained flats arranged over one or more floors, usually with their own front door. They may be in converted houses, low-rise council blocks, purpose-built 1960s-80s estates or mixed-use parades. The physical survey checks the unit; the lease explains who pays for the roof, walls, garden, structure and common parts.
Common defects to expect
These items are routine for the property type. Most are renegotiation items, not deal-breakers. The survey's job is to flag which apply to this specific property and which have already been addressed.
- Unclear roof and external-wall repairing obligations in the lease
- Damp transfer from the maisonette above, below or neighbouring unit
- Sound transmission through floors and party walls
- Fire separation and fire-door issues, especially in converted buildings
- Service charge disputes or missing reserve funds
- Private garden or access arrangements not matching the title plan
- Flat roofs, balconies and walkways at end of life on low-rise estates
- Ex-council construction type uncertainty on post-war estates
What the survey should cover
- Whether the surveyor can inspect roof voids, external walls and shared structure
- Damp source: roof, neighbour, plumbing, ground floor or condensation
- Fire safety basics, escape route and visible fire separation
- Window, door, balcony, walkway and garden-boundary condition
- Heating, electrics and ventilation within the maisonette
- Visible common parts and any estate-maintained elements
Which survey level to book
RICS Level 2 is usually adequate for a modern purpose-built maisonette in good condition. Level 3 is better for converted maisonettes, maisonettes in period houses, ex-council non-standard estates, or any property with roof, damp or structural questions.
For a deeper comparison see Level 2 vs Level 3 survey.
Construction-specific risks
Maisonette risk is split ownership. The buyer may be responsible for internal finishes but dependent on the freeholder or neighbour for roof, external walls, drainage or access repairs. Converted maisonettes also carry fire-stopping and acoustic risks that a general flat survey can underplay.
What to check before offering
- →Ask for the lease plan, lease length, ground rent and service charge before offering
- →Confirm who repairs the roof, external walls, windows, garden fences and drains
- →Check whether the maisonette is ex-council and whether any estate service charges apply
- →Ask whether major works or Section 20 consultations are planned
- →Check the lender position if the maisonette is over commercial premises or non-standard construction
Use the full pre-offer checklist on the house buying checklist to combine these property-type checks with the standard pre-offer items.
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Run a free previewFrequently asked questions
Is a maisonette the same as a flat for survey purposes?
Usually yes for tenure and leasehold checks, but maisonettes often have extra house-like responsibilities such as private entrances, gardens, roofs or external walls. The lease decides who pays for each element.
Do I need a survey on a maisonette?
Yes. The survey checks the physical condition, while the conveyancer checks lease length, service charge and repair obligations. You need both because maisonette problems often sit between condition and legal responsibility.
Are maisonettes hard to mortgage?
Most are mortgageable. Lender issues arise with short leases, high service charges, unusual freehold structures, maisonettes over commercial premises, or non-standard construction on some ex-council estates.
Should I choose Level 2 or Level 3 for a maisonette?
Level 2 is fine for a modern purpose-built maisonette in good condition. Choose Level 3 for converted, period, ex-council, visibly damp, or structurally altered maisonettes.
Editorial review
Editorial owner: BiteRight Ltd, operator of MyPropertyScan. We review buyer guides against UK public property datasets, RICS survey wording, lender requirements, and common buyer questions.
Pages are updated when source coverage, property-risk guidance, survey cost assumptions, or product checks materially change. Methodology and dataset limitations are explained on the MyPropertyScan methodology page.
Sources used
We use UK public and specialist sources where they are available. Public datasets can be incomplete, delayed, or missing for some addresses. Treat them as a starting point, not as a replacement for professional advice.
Source standard: preference goes to official government datasets, statutory bodies, professional standards, and primary dataset publishers. We cite the source family on the page and explain coverage limits rather than filling gaps with unsupported estimates.
General information only. Not legal, mortgage, insurance, or surveying advice. Always confirm with your own surveyor, broker, and conveyancer before making decisions. MyPropertyScan is operated by BiteRight Ltd.