Selling a Bungalow: What Surveys Typically Find
Common survey issues in bungalows including flat roof sections, ground-level damp, drainage concerns, and loft conversion implications. What sellers should know.
What you need to know
Bungalows remain highly desirable properties in the UK, particularly among downsizers and buyers seeking single-storey living. However, their unique construction characteristics mean that surveys flag a specific set of issues. This guide covers the most common bungalow survey findings, from flat roof sections and ground-level damp exposure to loft conversion concerns and drainage challenges, and explains what sellers can do to prepare.
- Flat roof sections are the most frequently flagged issue in bungalow surveys — knowing your roof material and its expected lifespan helps you respond to survey findings.
- Bungalows are more exposed to ground-level damp because every room is at ground floor level, making DPC condition and external ground levels particularly important.
- Loft conversions without building regulations approval are a common finding and will be flagged by both the surveyor and the buyer's solicitor.
- The wider footprint of a bungalow creates more drainage complexity, and poorly maintained drainage is a frequent survey concern.
- Bungalows built in the 1960s and 1970s often contain asbestos-containing materials in soffits, guttering, and artex coatings — these should be disclosed honestly.
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Check your sale readinessBungalows occupy a unique position in the UK property market. High demand from downsizers, retirees, and buyers with accessibility needs, combined with a declining supply of new bungalow construction, means that well-maintained bungalows typically sell well. However, their single-storey construction introduces specific survey considerations that differ from those in two-storey houses.
Understanding what the buyer's surveyor will look for — and preparing accordingly — helps you avoid surprises and keep the sale on track. For a broader overview of what surveys involve, see our seller's guide to property surveys. This guide covers the most common survey findings in bungalows and the practical steps sellers can take.
Flat roof sections
Flat roofs are one of the most common features of bungalow construction and one of the most frequently flagged items in bungalow surveys. Many bungalows — particularly those built from the 1950s to the 1980s — have flat roof sections over extensions, porches, garages, or even the main roof.
Flat roof materials and lifespan
| Material | Typical lifespan | Common issues |
|---|---|---|
| Traditional felt | 10-15 years | Blistering, cracking, ponding water |
| Torch-on felt | 15-25 years | Joint failures, ponding, UV degradation |
| EPDM rubber | 25-40 years | Edge detail failures, punctures |
| GRP fibreglass | 25-30+ years | Cracking if poorly installed, edge delamination |
| Lead | 60-100+ years | Theft, thermal movement cracking in large sheets |
The surveyor will assess the flat roof from ground level and, where accessible, from above. They will look for signs of water ponding, blistering or cracking of the covering, deteriorated upstands and edge details, and any evidence of internal water staining on ceilings beneath the flat roof.
If your flat roof is an older felt system, be prepared for the surveyor to flag it. Replacing a flat roof with a modern EPDM or GRP system typically costs £1,500 to £4,000 depending on size, and this is often a worthwhile investment before marketing. Alternatively, obtaining a specialist roofing report confirming the roof's remaining life expectancy can reassure buyers without the cost of replacement.
Ground-level damp exposure
Because every room in a bungalow is at ground floor level, the entire building is exposed to ground moisture in a way that the upper floors of a house are not. The surveyor will pay particular attention to:
- The condition of the damp proof course (DPC) — whether it is intact, bridged by raised external ground levels, or covered by render
- Damp readings along external walls, particularly at the base
- Sub-floor ventilation — whether airbricks are clear and providing adequate airflow beneath suspended timber floors
- Any signs of rising or penetrating damp throughout the property
Common damp issues in bungalows include external ground levels that have been raised above the DPC — often by paving, decking, or raised flower beds — and blocked airbricks that reduce sub-floor ventilation. Both are relatively straightforward and inexpensive to remedy: lowering ground levels and clearing airbricks can often resolve damp readings without the need for chemical treatments.
Wider footprint drainage
Bungalows cover a larger ground area relative to their internal floor space compared to two-storey houses. This wider footprint has implications for drainage:
- More linear metres of guttering and downpipes are needed to handle rainwater from the roof
- Underground drainage runs tend to be longer, with more junctions and potential failure points
- Surface water drainage from surrounding hardstanding needs to be managed across a larger area
- The wider foundation footprint means more potential interaction with underground water courses and drainage patterns
The surveyor will check visible drainage elements and may recommend a CCTV drainage survey if they have concerns about the underground system. If you have experienced any drainage issues — slow draining, gurgling, or standing water — address them before marketing.
Loft conversion implications
Loft conversions are extremely popular in bungalows, effectively doubling the usable floor space and significantly increasing property value. However, they also introduce survey and compliance issues that the buyer's surveyor and solicitor will scrutinise.
Building regulations compliance
A loft conversion is building regulations-controlled work. The surveyor and buyer's solicitor will check for:
- A building regulations completion certificate — this is essential evidence that the conversion was inspected and approved
- Adequate fire escape provisions — the conversion must have a protected escape route, fire doors, and potentially a window suitable for emergency escape
- Structural adequacy — the existing roof structure must have been properly designed or strengthened to support habitable rooms
- Staircase compliance — minimum headroom, width, and handrail requirements
- Adequate insulation and ventilation to the converted space
If building regulations sign-off is missing, this is a significant issue. The buyer's solicitor may accept indemnity insurance for older conversions, but some mortgage lenders will not. A regularisation application to the local authority, which involves a retrospective inspection and typically costs £400 to £800, is the preferred solution.
Extension issues
Bungalow extensions are very common, and the surveyor will assess the junction between the original structure and any extensions particularly carefully. Key concerns include:
- Cracking at the junction between the original building and the extension, which may indicate differential movement
- Flat roof sections over extension areas — assessed using the same criteria as the main flat roof
- Whether the extension foundations are adequate for the ground conditions
- Building regulations compliance — extensions built without approval will be flagged
- Impact on the DPC — extensions that have bridged or disrupted the original DPC can cause damp in the adjacent rooms
If your bungalow has been extended, gather any available documentation — planning permission, building regulations completion certificates, and structural calculations — to provide to the buyer's solicitor during conveyancing.
Accessibility modifications
Bungalows are often modified for accessibility, and these modifications will be noted in the survey. Common accessibility features include:
- Ramps replacing steps at entrance points
- Widened doorways to accommodate wheelchair access
- Level access or wet room showers
- Grab rails and support bars in bathrooms
- Stairlifts to loft conversions
- Lowered kitchen work surfaces and adapted fittings
Well-installed accessibility modifications can be a significant selling point for the right buyer. However, modifications that have been poorly installed, that have damaged the building fabric, or that do not meet current building standards may be flagged as concerns. If modifications were funded by a Disabled Facilities Grant from the local authority, there may be repayment conditions that affect the sale — check with your local authority.
Common defects by era
| Era | Common construction | Typical survey findings |
|---|---|---|
| Pre-1930s | Solid wall, slate roof | No DPC, lime mortar, original timber, pre-1919 issues |
| 1930s-1950s | Cavity wall, tiled roof | Asbestos in soffits and guttering, early cavity ties corroding, original electrics |
| 1960s-1970s | Cavity wall, flat roof sections common | Flat roofs at end of life, artex containing asbestos, single glazing, poor insulation |
| 1980s-2000s | Cavity wall with insulation, concrete tiles | Concrete tiles nearing replacement, uPVC window failures, cavity wall tie corrosion |
Bungalow advantages in surveys
It is worth noting that bungalows also have inherent advantages from a survey perspective:
- No upper floor concerns. Issues such as sagging upper floors, load-bearing wall removal on upper storeys, and first-floor bathroom leaks damaging ground-floor ceilings do not apply.
- Easier roof access. The lower roof height makes inspection easier and repair costs lower compared to two and three-storey properties.
- Simpler structure. Single-storey construction is inherently simpler, with fewer structural elements to assess.
- Easier to maintain. Gutters, soffits, fascias, and external decoration are all accessible without scaffolding in most cases.
Preparing your bungalow for sale
- Assess your flat roof. If your bungalow has flat roof sections, check their condition. If the covering is past its expected lifespan, consider replacement or obtain a specialist report.
- Check ground levels. Walk around the outside of the property and ensure external ground levels are below the DPC. Lower any raised beds, paving, or soil that bridges the DPC.
- Clear airbricks. Ensure all sub-floor ventilation airbricks are clear and unobstructed.
- Gather conversion documentation. If you have a loft conversion or extensions, locate the building regulations completion certificates and any planning permissions.
- Check drainage. Ensure gutters are clear, downpipes are flowing freely, and there is no standing water around the foundations. Commission a drainage survey if you have any concerns.
A well-maintained bungalow with clear documentation and no significant defects is a highly attractive property in the current market. Taking the time to address common survey issues before marketing puts you in the strongest possible position.
Frequently asked questions
Are bungalows easier or harder to sell than houses?
Bungalows are generally in high demand and can be easier to sell than equivalent houses in many areas. They appeal to downsizers, retirees, and buyers with mobility needs, and there is a limited supply because few new bungalows are being built. However, the survey process for a bungalow can flag issues specific to single-storey construction, particularly flat roof sections, ground-level damp exposure, and wider footprint drainage concerns. Understanding these issues helps you prepare for a smooth sale.
Do bungalows have more damp problems than houses?
Bungalows can be more susceptible to damp problems because every room is at ground level, increasing exposure to ground moisture. The wider footprint relative to the building height means more wall area is in contact with potentially damp ground. However, this does not mean bungalows inevitably have damp issues. A bungalow with a properly functioning damp proof course, adequate ventilation, and well-maintained external ground levels should not have significant damp problems. The surveyor will check damp levels throughout the property and flag any areas of concern.
What survey level is recommended for a bungalow?
For a modern bungalow built after 1960 in reasonable condition, a RICS Home Survey Level 2 is usually sufficient. For an older bungalow, particularly one built before 1945 or one with non-standard construction such as a concrete or timber frame, a Level 3 Building Survey is recommended. If the bungalow has a flat roof or has had significant extensions or alterations, a Level 3 survey is also advisable because these features require more detailed assessment.
How long do flat roofs on bungalows last?
The lifespan of a flat roof depends on the material used. Traditional felt flat roofs typically last 10 to 15 years. Modern torch-on felt systems last 15 to 25 years. EPDM rubber membrane roofs last 25 to 40 years. GRP fibreglass roofs last 25 to 30 years or more. If your bungalow has a flat roof section, the surveyor will assess its age, material, and condition. A flat roof that is approaching the end of its life will be flagged and the buyer may factor replacement costs into their offer.
Will a loft conversion in a bungalow affect the survey?
Yes. Loft conversions in bungalows are popular but raise several survey issues. The surveyor will check whether the conversion has building regulations approval, whether the roof structure has been properly designed to support habitable rooms, whether adequate fire escape provisions are in place, and whether the staircase meets current building regulations standards. A loft conversion without building regulations sign-off is one of the most common issues found in bungalow surveys and will be flagged by the buyer's solicitor.
Are bungalow extensions more problematic than house extensions?
Bungalow extensions can present specific issues because the single-storey structure means extensions tend to be wider rather than taller, creating junction points where the extension meets the original building. The surveyor will check for cracking at the junction, differential movement between the original structure and the extension, flat roof sections over extension areas, and whether building regulations approval was obtained. Rear and side extensions on bungalows are very common and, when properly built, should not cause significant survey concerns.
Do bungalows have subsidence issues?
Bungalows are not inherently more or less prone to subsidence than houses. Subsidence risk depends on the soil type, proximity to trees, drainage conditions, and the adequacy of the foundations. However, the wider footprint of a bungalow means that differential movement across the building can be more apparent, with one section of the property moving independently of another. The surveyor will look for the classic signs of subsidence — diagonal cracking, doors and windows sticking, and sloping floors — and will recommend further investigation if active movement is suspected.
What are the most common defects in 1960s and 1970s bungalows?
Bungalows built in the 1960s and 1970s commonly feature flat roof sections, single-glazed windows, cavity wall construction with no insulation, original electrical installations that may now be unsafe, asbestos-containing materials in soffits, guttering, and artex coatings, and concrete interlocking roof tiles that are reaching the end of their life. These issues are all manageable and rarely prevent a sale, but the surveyor will note them and the buyer may seek a price reduction to reflect the cost of updating the property.
How does accessibility affect a bungalow survey?
If accessibility modifications have been made to the bungalow — such as ramps, widened doorways, wet rooms, stairlifts for loft conversions, or level access showers — the surveyor will note these and assess whether they have been properly installed. Modifications that have been carried out to a good standard can be a selling point, particularly for buyers with mobility needs. However, modifications that have not been properly finished or that have caused damage to the building fabric will be flagged as concerns.
Should I replace my bungalow's flat roof before selling?
If your flat roof is in poor condition, leaking, or clearly at the end of its life, replacing it before selling can be worthwhile. A new flat roof using modern materials such as EPDM or GRP fibreglass typically costs between 1,500 and 4,000 pounds depending on size and adds immediate value by removing a significant survey concern. However, if the flat roof is in reasonable condition with no signs of leaks, it may be more cost-effective to obtain a specialist roofing report confirming its remaining life expectancy rather than replacing it.
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