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Snagging Survey

Snagging Survey in Chew Valley

New homes in the BS39 corridor sit above the historic Somerset Coalfield - our inspectors check what the NHBC warranty cannot

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Between Bristol and Bath - With Coal Mining Under Your Feet

The BS39 postcode takes in Pensford, Clutton, Temple Cloud, Bishop Sutton, Hallatrow, High Littleton and the villages of the Chew Valley - all within 10 miles of both Bristol and Bath. This commuter belt appeal has driven steady new build activity, but in our experience inspecting BS39 new builds, most are small-scale: six to twelve homes at a time, built by regional contractors without the customer care infrastructure of national housebuilders.

The ground beneath BS39 holds a more significant secret. The Pensford Syncline - the northern arm of the Somerset Coalfield - runs directly through this area. Pensford itself had a working colliery until 1955 and Bishop Sutton had one operating before 1719. Properties here sit above a landscape of former mine shafts, shallow workings, and coal seam geology. A CON29M Coal Authority search is essential before completion, and a professional snagging survey should include drainage and floor level checks that can indicate subsidence risk.

Our inspectors cover the full BS39 area. Snagging surveys start from £295, reports within 48 hours.

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BS39 Chew Valley Property Market

\u00a3375,930

Average House Price

All property types, Land Registry 2025

\u00a3548,132

Detached Average

Dominant property type in BS39 - 52% of stock

CON29M

Mining Search Required

Somerset Coalfield beneath BS39 - needed at conveyancing

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Snagging Survey From

Fixed price, snag list report within 48 hours

Somerset Coalfield: CON29M Search Required

BS39 sits directly above the Pensford Syncline - the northern basin of the Somerset Coalfield. Pensford Colliery operated until 1955. At least one pit near Bishop Sutton was working before 1719. National Coal Board records document mine schemes, shafts and workings across Pensford, Norton Hill, Radstock and Bromley collieries. A Coal Authority CON29M mining search is required for property transactions in this postcode. Our snagging inspectors check floor level tolerances, crack patterns and drainage performance with mining subsidence risk in mind.

New Builds in BS39: Small Sites, Regional Builders

Unlike major urban postcodes, BS39 new builds are rarely delivered by FTSE 100 housebuilders. Most active sites are small infill developments: conversions of farmyards, brownfield plots within village envelopes, and permissions for six to twelve units on edge-of-village land. Bath and North East Somerset Council operates a tight Green Belt and AONB policy, which restricts volume housebuilder activity and keeps new build numbers low.

This creates a specific snagging risk: regional and local contractors typically do not have the same warranty infrastructure as Persimmon or Barratt. NHBC registration is not universal on smaller sites. Contracts may use CRL Protek or Premier Guarantee warranties instead, which have different complaint processes and resolution timescales.

Our inspectors are experienced with both national and regional warranty providers. We verify your warranty certificate is registered, your property is covered, and that the builder has completed a compliant handover. If your new build in Pensford, Clutton or Temple Cloud has no structural warranty at all, we flag this as a critical issue.

River Chew Flood Risk: Check Your Specific Plot

The River Chew runs through the heart of BS39, and Environment Agency flood maps show documented flood risk at Pensford (Church Street), Woollard, Compton Dando and Chewton Place. The Chew Valley Flood Forum was established after the 2012 floods and works with B&NES, Bristol Water and the Environment Agency on ongoing mitigation. If your new build is near any watercourse in BS39, check the EA flood map for your specific plot. Our snagging surveys include drainage gradient checks and DPC height verification - both are particularly important in areas with documented flood history.

What Somerset Coalfield Geology Means for Your New Home

The Pensford Syncline geology creates specific issues for new build foundations that differ from the limestone plateau to the south or the clay soils north of Bristol. The area is underlain by coal measures - sandstones, shales, and mudstones banded with coal seams - interbedded with Lias Clays in the valley floors. Lias Clay is a notoriously poor foundation material, prone to shrink-swell movement and landslips.

Coal seam voids: former workings can cause localised subsidence decades after closure
Mine gas: methane and CO2 can migrate from old workings - gas protection membranes may be required
Filled ground: demolished colliery buildings and yard areas sometimes become the base of new build plots
Lias Clay valleys: shrink-swell clay movement can cause stepped cracking in newer walls
Radon: Somerset is a medium-to-high radon area; new builds should have radon protection measures installed

A snagging survey checks physical evidence at handover - floor level flatness, crack patterns, drainage performance, and the presence of required gas protection membranes where specified. If any of these raise concerns, we recommend a follow-up specialist ground investigation report before the NHBC 2-year builder warranty expires.

BS39 Housing Stock by Type

Detached 52%

Semi-detached 24%

Terraced 16%

Flats 8%

Source: ONS Census 2021, BS39 postcode area. Detached houses are the clear majority, reflecting the rural character of Pensford, Clutton, Bishop Sutton, and the Chew Valley villages.

Our Inspection Checklist for BS39 New Builds

Homemove snagging surveys in BS39 cover the full range of new build defects, with additional focus on the items most relevant to coal mining geology, rural drainage, and small-site build quality.

Floor levels: checked with laser level to identify any differential settlement indicating subsidence
Wall crack patterns: stepped, diagonal and horizontal cracks noted and assessed for movement type
Gas protection membrane: confirmed present where specified in building regulations approval
Drainage gradients: patio and driveway slopes checked to prevent standing water near foundations
DPC heights: damp proof course level above external ground confirmed to comply with building regulations
Structural warranty: certificate checked to confirm registration and coverage period
Radon protection: vent pipes and fan installation checked where required by local radon maps
External joinery: window and door frames checked for correct sealing and operation

Reports are issued as PDFs within 48 hours. Each defect is photographed, referenced to NHBC Technical Standards where applicable, and prioritised by severity. We include a formatted snag list suitable for submission directly to your builder.

Book Your BS39 Inspection

How to Book a Snagging Survey in the Chew Valley

Get your instant quote

Enter your property address and type at homemove.com. BS39 snagging surveys start from £295 for a 2-bedroom home. Prices are fixed with no hidden charges.

Select a date

Choose from available inspector slots in your area. We cover all BS39 villages including Pensford, Clutton, Temple Cloud, Bishop Sutton, Hallatrow and High Littleton.

Our inspector attends

A qualified, independent inspector carries out a thorough 3-5 hour inspection. They bring thermal imaging, a laser level, and a moisture meter. They check everything from roof to drainage outlets.

48-hour report delivery

Your snagging report is sent as a PDF with photographs, NHBC references, and priority ratings. We include a formatted snag list ready to send to your developer.

Support through remediation

Our team helps you manage the remediation process. If items are disputed or incomplete, we can return for a re-inspection at a reduced rate to confirm that work has been done correctly.

Snagging Survey Chew Valley BS39 - Your Questions Answered

How much does a snagging survey cost in the Chew Valley BS39?

Snagging surveys in BS39 start from £295 for a standard inspection of a 2-bedroom new build. Larger homes cost proportionately more - a 4-bedroom detached like those common in Clutton and Temple Cloud will typically be in the £375-£425 range. Prices are fixed at booking. You can get an instant quote without speaking to anyone at homemove.com.

Do I need a CON29M coal mining search for BS39?

Yes. BS39 sits above the Pensford Syncline, the northern basin of the Somerset Coalfield. Pensford Colliery operated until 1955 and Bishop Sutton had working pits before 1719. A CON29M Coal Authority mining search is a standard conveyancing requirement for properties in this area - your solicitor should be arranging this. It reveals risks from former mine entries, shallow workings, and mine gases. Our snagging survey complements the coal authority search by checking physical evidence at the property: floor levels, crack patterns, and drainage performance.

How long does a snagging survey take in Pensford or Clutton?

Most inspections in BS39 take 3-5 hours. Smaller two-bedroom homes take around 3 hours. Larger 4-bedroom detached homes typical of the area take closer to 5 hours. Our inspector works through every accessible area systematically - from loft space to drainage channels. You do not need to be present throughout, though many buyers prefer to attend so they can ask questions.

What if my new build in BS39 uses a smaller warranty provider instead of NHBC?

Many smaller new build sites in BS39 use CRL Protek, Premier Guarantee, or LABC Warranty rather than NHBC Buildmark. Our snagging reports reference the relevant technical standards for your specific warranty provider - not just NHBC. All structural warranty schemes have a 2-year builder repair period and 8-year structural cover period, and defects must be reported within the builder's 2-year period to be repaired at no cost. Our report gives you a dated, photographic record to support any warranty claim, regardless of which provider covers your home.

Is there radon gas risk for new builds in BS39?

Yes. Somerset is classified as a medium-to-high radon area under the UK Health Security Agency (UKHSA) radon maps. New builds in BS39 are typically required to include radon preventative measures such as underfloor radon sumps and pipework for potential future fan installation. Our inspectors check that required radon protection measures have been installed where building regulations approval requires them. If radon protection has been omitted or incorrectly installed, this is flagged as a critical item in your report.

Can you inspect a new build before I legally complete the purchase?

Yes - a pre-completion inspection is the ideal approach. Under the New Homes Quality Board framework, introduced in 2022, buyers have a right to request a pre-completion inspection (PCI) before exchange or completion. However, developers are not legally required to permit access in all cases. Most small regional builders in BS39 will allow access if asked in advance. If the developer refuses, we carry out the inspection immediately after you receive the keys - ideally within the first week of ownership while the property is still empty.

What areas within BS39 do you cover?

We cover every village and settlement in the BS39 postcode district, including Pensford, Clutton, Temple Cloud, Hallatrow, High Littleton, Bishop Sutton, Chew Stoke, Chew Magna, Stanton Drew, Compton Dando, and surrounding rural properties. BS39 is the full Chew Valley catchment postcode and our inspectors are familiar with the local geology and planning context in this part of Bath and North East Somerset.

What are the most common snagging faults on new builds in rural Somerset?

On small-site rural new builds in areas like BS39, the most frequent issues our inspectors find are drainage gradient failures (patios and drives sloping towards the house rather than away), incomplete pointing on external masonry, poorly-adjusted door and window ironmongery, heating systems not correctly commissioned or zoned, and loft insulation pulled back from eaves, leaving a cold bridge. Less common but more significant are floor level variations of more than 10mm over 2 metres, which can indicate early movement on clay foundations, and missing gas protection membranes on sites with known coal mine proximity.