Independent new build inspections in South Gloucestershire's coal mining heartland - RICS-registered surveyors covering Frampton Cotterell, Coalpit Heath, and Winterbourne








BS36 is the only postcode in England where the coal mining history is written into the postcode's own name. Coalpit Heath - one of the principal settlements covered by BS36 - was established as a coal mining village above the Bristol Coalfield, formally known as the Coalpit Heath Syncline. The last deep pit, Frog Lane Colliery, closed in 1949. But the shallow workings left beneath the area - many driven before the Newcomen engine made deep mining possible, meaning shafts and galleries often less than 100 feet below surface - remain a material ground condition risk for new build foundations.
Barratt Homes and David Wilson Homes' Blackberry Park (215 homes in Coalpit Heath) is the area's major recent development. Resident reviews document snagging backlogs and snag resolution taking the best part of a year. Heritage Fields (25 homes, Winterbourne) and boutique infill schemes across Frampton Cotterell and Iron Acton round out current new build activity. Our snagging inspectors cover all of these schemes.
A pre-completion snag list from £295 gives you documented leverage with your builder before you legally complete. The HBF 2025 survey found 93.7% of new build buyers reported defects - in a postcode where the ground beneath your home needs specialist assessment, independent inspection above ground matters just as much.

£446,125
Average House Price
BS36 sold prices, HM Land Registry 2025
£556,926
Detached Average
Premium detached stock dominates BS36
93.7%
New Build Defect Rate
HBF 2025: buyers who reported defects
£295
Snagging Survey From
Fixed price, snag list within 48 hours
BS36 sits directly above the Bristol Coalfield, formally known as the Coalpit Heath Syncline. Coalpit Heath was founded as a coal mining settlement - the name records the history in full. Mining operations ran from at least the 13th century through to 1949 (Frog Lane Colliery), with additional mines at Ram Hill, Henfield, Mays Hill, and Engine Common in the Iron Acton parish. The earliest workings were shallow - often less than 100 feet below surface before deep pumping became available. Shallow workings present higher surface subsidence risk than deep mining. A CON29M Coal Mining Search through the Coal Authority is required for all BS36 property transactions and will reveal the proximity of your specific site to recorded workings and shafts. Your conveyancer should obtain this search as standard. Our snagging inspections check for visible signs of differential settlement and cracking at foundation level, but CON29M provides the definitive ground risk assessment.
Barratt Homes and David Wilson Homes' Blackberry Park development is the dominant new build scheme in BS36, delivering 215 homes across 2, 3, 4, and 5-bedroom properties on a 22-acre site in Coalpit Heath. The development includes 35% affordable housing and significant open space. Resident reviews on HomeViews give the development 4.09 out of 5 - positive overall, but several residents specifically note snagging backlogs and resolution times running to 'the best part of a year.'
A pre-completion snagging inspection changes this dynamic significantly. When defects are documented in a formal report before you legally complete, your builder is contractually required to address them. Defects that emerge only after you move in - and after the developer's site team has moved on to the next phase - are harder and slower to resolve. Land adjacent to Blackberry Park (4.8 hectares off Park Lane) is already being marketed for the next development phase. A new cohort of buyers will be arriving soon.

The ground beneath BS36 presents three distinct risk layers that buyers and developers need to understand. The Bristol Coalfield is the headline concern - shallow historical workings across Coalpit Heath, Ram Hill, Iron Acton, and Frampton Cotterell create subsidence potential that must be assessed through a Coal Authority CON29M search for every transaction. The South Gloucestershire Mines Research Group documents the area's mining heritage in detail.
The underlying bedrock across much of BS36 is Mercia Mudstone Group (formerly Keuper Marl) - Triassic red mudstone and siltstone with associated shrink-swell clay soils. Clay soils expand when wet and contract when dry, creating seasonal movement that can cause cracking in walls and foundations of properties without adequate structural provision. The Bristol Coalfield radon designation is a further consideration: the uranium-bearing strata that produced the coal seams also produce elevated radon concentrations. BS36 falls within a radon-affected area, and new builds since 2000 should have radon-resistant construction installed as standard.
The River Frome flows through Frampton Cotterell, with the Bristol Frome Catchment Flood Alert Area covering tributaries through Chipping Sodbury to Bristol. The Environment Agency monitors river levels at Frampton Cotterell, and medium flood risk is assigned to parts of BS36 near the Frome valley. Properties on elevated ground above the valley are not affected, but low-lying plots near Frampton Cotterell's village centre should have their flood risk status confirmed before exchange.
BS36 covers a cluster of distinct settlements with strong village identities. Frampton Cotterell is recorded in the Domesday Book (1086) as 'Frantone', meaning settlement on the River Frome. Iron Acton takes its name from iron mining - the oak woodland beside the Frome still stands, and the village's Acton Court manor house (Grade I listed, 1535) was lavishly decorated to receive Henry VIII. Winterbourne is the largest of the three settlements and the main focus of ongoing development activity.
The historic cores of Frampton Cotterell and Iron Acton are conservation areas, which constrains new development inside the village cores but creates planning pressure for greenfield sites on their edges. The South Gloucestershire Local Plan proposes 3,500 homes near Winterbourne and Frampton Cotterell in the 2025-2040 period, currently in draft stage. More immediately, Heritage Fields (Prestige Developments, 25 homes on a former reclamation yard in Winterbourne) and Herons Lea (Freemantle, 9 executive homes in Hambrook) are active boutique schemes.
For buyers at boutique schemes like Heritage Fields and Herons Lea, snagging inspection is particularly valuable. Smaller developers have less warranty infrastructure than nationals: a formal pre-completion snag list gives you documented leverage regardless of the builder's size. Our inspectors cover all BS36 new builds.

Enter your BS36 postcode and property size on our quote page to receive a fixed price in seconds. No callbacks, no hidden extras - just a clear price.
Our South Gloucestershire inspectors cover BS36 7 days a week. Book before your legal completion date - ideally at least 2 weeks before exchange to allow remediation time.
Our RICS-registered surveyor attends your property and works through a systematic inspection of every room, roof space, external fabric, drainage, and all installed services. Most BS36 new builds take 2.5-4 hours depending on size.
Within 48 hours you receive a professionally formatted snag list with photographs and specification references. The report is designed for direct submission to your developer's site manager.
Hand the snag list to your developer. Our inspectors can return for a re-inspection once remedial works are complete to confirm all items have been resolved before you accept the keys.
Prices correct as of 2026. Blackberry Park resale values average £675,000+ for premium detached plots - an inspection from £295 is a small outlay relative to the purchase price.
Our snagging surveys in BS36 start from £295 for two and three-bedroom homes, and from £375 for four-bedroom detached properties. Executive five-bedroom homes are from £450. All prices include a professionally formatted snag list report with photographs delivered within 48 hours of the inspection. Re-inspection visits to verify completed remediation work are available from £150.
Yes - it is a documented and material risk that must be assessed for every property transaction in BS36. The Bristol Coalfield (Coalpit Heath Syncline) sits directly beneath the postcode, and historical mining operations ran from the 13th century through to 1949 at sites including Frog Lane, Ram Hill, Henfield, and Engine Common. The earliest workings were shallow - often under 100 feet - which carries higher surface subsidence risk than deep mining. A CON29M Coal Authority Mining Search is required for all BS36 transactions. Our snagging inspection checks for visible signs of differential settlement and cracking at ground level, but the CON29M search provides the definitive geological assessment.
Yes. Our inspectors cover all properties at Blackberry Park, which delivers 215 homes across 2 to 5 bedrooms on a 22-acre site in Coalpit Heath. Resident reviews document snagging backlogs and resolution times of up to a year. A pre-completion snagging inspection, delivered before you legally complete, means your builder is contractually obligated to address defects identified in the report. We cover all house types at Blackberry Park regardless of the plot size.
A radon test is worth considering for BS36 properties. The area falls within a radon-affected designation under UKHSA guidance, because the uranium-bearing Carboniferous strata that produced the coal seams also generate elevated radon concentrations. New builds constructed after 2000 in radon-affected areas should have radon-resistant construction as standard - our snagging inspectors check for radon membrane continuity where visible. For older properties, a radon test from UKradon.org provides a definitive assessment. Our snagging surveys do not include environmental testing, but we can flag if radon-resistant construction appears absent in an eligible new build.
The River Frome flows through Frampton Cotterell, and the Bristol Frome Catchment Flood Alert Area includes tributaries through this postcode. The Environment Agency monitors river levels at the Frampton Cotterell gauge station. Medium flood risk applies to parts of BS36 near the Frome valley. Properties on elevated ground above the valley are typically unaffected, but low-lying plots near the river should have their specific flood risk confirmed via the EA's flood map before exchange. Our snagging inspectors check drainage design, damp-proof courses, and external ground levels on all new builds as standard.
Yes. Heritage Fields (Prestige Developments, 25 homes on a former reclamation yard in Winterbourne) and Herons Lea (Freemantle Developments, 9 executive homes in Hambrook) are both covered. For smaller or independent developers, a snagging inspection is arguably more important than with national housebuilders: smaller developers have less warranty-chasing infrastructure, and a formal pre-completion snag list gives you documented leverage regardless of builder size. We cover all new build schemes in BS36 from a single plot to a 200-home estate.
A 2-3 bed house typically takes 2.5-3 hours. A larger 4-5 bed executive home takes 3.5-4 hours. Our snag list report is issued within 48 hours and is structured for direct submission to your builder's site manager, with photographs and specification references for each item found.
Book before you exchange contracts, aiming for the inspection at least 2 weeks before your legal completion date. This gives the developer time to complete remedial works before you complete. Developers cannot refuse access for a snagging inspection after exchange. We recommend confirming the access arrangement with the developer's site manager - Barratt and David Wilson Homes typically require 5-7 days notice for a site visit. Contact us and we can advise on the standard process for your specific developer.
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Independent new build inspections in South Gloucestershire's coal mining heartland - RICS-registered surveyors covering Frampton Cotterell, Coalpit Heath, and Winterbourne
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Homemove is a trading name of HM Haus Group Ltd (Company No. 13873779, registered in England & Wales). Homemove Mortgages Ltd (Company No. 15947693) is an Appointed Representative of TMG Direct Limited, trading as TMG Mortgage Network, which is authorised and regulated by the Financial Conduct Authority (FRN 786245). Homemove Mortgages Ltd is entered on the FCA Register as an Appointed Representative (FRN 1022429). You can check registrations at NewRegister or by calling 0800 111 6768.