CB21 new builds sit on the same gault clay that caused Cambridge's most costly foundation failure. Our inspectors find what developers miss.








CB21 stretches south-east from Cambridge city, covering Fulbourn, Teversham, Linton, Great Wilbraham, and a cluster of South Cambridgeshire villages up to the Essex border. House prices average £489,718, with detached homes at £614,131. Two of the area's most active new build sites - Hill Residential's Farehurst Park and Shelbourne Estates' The Orchards, both in Fulbourn - are selling homes from £370,000 to over £1.1 million.
The geology under these sites matters. CB21 sits on chalk overlaid with gault clay - the same formation the British Geological Survey classifies as having very high shrink-swell expansive potential, and the same ground type that caused Barratt to demolish 36 homes at Darwin Green in Cambridge CB3 in January 2024 - with a further 47 plots requiring remediation. Foundation heave on clay is not a theoretical risk in Cambridgeshire; it has already resulted in one of the most expensive new build failures in recent UK history.
Our snagging inspectors work across CB21. We carry out pre-completion and post-completion inspections at Farehurst Park, The Orchards, Poppyfields in Linton, and across the district. Every report is delivered within 48 hours, formatted for direct submission to your developer.

£489,718
Average House Price
Year-on-year (Rightmove 2025)
£614,131
Average Detached
CB21 detached average sold price
£369,950
New Build Entry Price
Hill Farehurst Park, Fulbourn CB21
15,880
CB21 Population
2021 Census
Fulbourn is the main focus of new build activity in CB21. Hill Residential's Farehurst Park on Teversham Road (CB21 5EB) has homes available from £369,950 for a two-bed apartment to £799,950 for a four-bedroom detached. Hill is a five-star HBF housebuilder and WhatHouse? Housebuilder of the Year 2023, which gives buyers reasonable confidence in build quality - but no housebuilder is immune from snags.
Shelbourne Estates' The Orchards (CB21 5AP), marketed through Savills Cambridge New Homes, sits on the edge of the village bordered by open fields. It is a boutique development offering three, four, and five-bedroom homes from £549,750 to over £1.1 million, with underfloor heating, Siemens appliances, and Villeroy & Boch sanitaryware specified throughout. Premium specifications reduce some categories of snag but add new ones: underfloor heating systems, complex kitchen integrations, and high-end tile work all have failure points that standard volume housebuilder inspections do not typically encounter.
In Linton, Abbey New Homes' Poppyfields on Bartlow Road (CB21 4AU) has final four-bedroom homes available from £650,000, with six months' mortgage paid offered on selected plots. On boutique and final-phase developments, the commercial pressure to complete and close out is high - inspection quality at handover can suffer as site teams wind down.
The British Geological Survey classifies gault clay as having very high expansive potential for shrink-swell movement. It is one of the most damaging geological formations for foundations in Britain. CB21's Fulbourn and Teversham areas sit on chalk overlaid with gault clay deposits - the same formation that caused foundation heave at Darwin Green, Cambridge CB3, where Barratt demolished 36 completed homes and remediated a further 47 plots in January 2024. The BGS also notes that gault clay can contain sulphate concentrations sufficient for chemical attack on standard concrete. NHBC's design standard requires heave protection for foundations on expansive clay - typically void formers under ground-bearing slabs. A snagging inspection on a CB21 new build should include external checks for differential settlement, seasonal cracking at window and door corners, and drainage performance around the ground floor perimeter.
Our CB21 snagging inspections follow a systematic room-by-room and element-by-element process. We start outside and work in - checking the ground around the building before the internal finishes, because foundation and drainage issues are the most consequential and the hardest to fix once the site has been landscaped and signed off.

The Environment Agency maintains a formal flood warning area for the River Granta at Linton and Babraham, covering properties on Mill Lane, Horn Lane, High Street, Symonds Lane, and Cambridge Road in Linton, and extending to Hildersham and Great Abington. For buyers purchasing new builds in these villages - including Poppyfields on Bartlow Road, Linton - understanding flood risk is part of due diligence.
CB21 also sits on the chalk aquifer, which makes groundwater flooding a secondary risk. The British Geological Survey documents long-lasting groundwater flooding across chalk catchments when the water table rises above ground level following sustained heavy rainfall - a phenomenon observed across southern England after the wet winters of 2019-20 and 2023-24. Chalk aquifer groundwater flooding typically affects ground floor slabs and subfloor voids rather than causing dramatic surface flooding, making it harder to spot than river flooding.
A snagging inspection is not a flood risk assessment - for that you need the EA flood map and your conveyancer's environmental search. But our inspection will document the condition of ground floor damp proofing, drainage clearance, and subfloor ventilation at the point of handover, giving you a baseline record if moisture issues emerge in the first years of occupation.
Snagging survey cost represents a fraction of 1% of purchase price on all CB21 new builds.
Enter your new build address in CB21 and the property type. Pricing is fixed based on size - you see the exact cost before booking, with no hidden charges.
We contact you within 24 hours to confirm. For pre-completion inspections at Farehurst Park or The Orchards, we work with the site sales team to arrange access before you legally complete.
The inspection takes two to four hours depending on property size. Our inspector uses a systematic checklist covering all elements from foundations to finishes, photographing and logging every issue found.
Your written report with annotated photographs arrives by email within 48 hours. We structure the report so you can submit it directly to Hill, Shelbourne, or Abbey's customer care teams.
Present the report during your pre-completion walkthrough or after moving in. Under the Consumer Code for Homebuilders, your developer must respond to genuine defects. If they dispute items, the NHBC Resolution Service provides independent adjudication at no cost.
The strongest time to have a snagging survey is before you legally complete. Once you hand over your funds, your leverage shifts from a prospective buyer to a warranty claimant. Site staff are still on site before completion; remediation is easier and cheaper; and any snags you negotiate are written into your completion paperwork.
Both Farehurst Park and The Orchards offer pre-completion access for independent inspectors - this is standard at reputable developments. The HBF's National New Homes Survey 2025 found that 93.7% of new build buyers reported at least one problem with their home. On CB21 developments in the £550,000 to £800,000 range, our inspectors typically find 30 to 80 items - a mix of structural observations and cosmetic snags.
If you have already completed, post-completion snagging is still valuable within your two-year NHBC defects period. Gault clay movement is seasonal - cracking that develops in the first dry summer after completion is a legitimate defect if documented and reported within the warranty window.

Homemove snagging surveys in CB21 start from £295 for a one or two-bedroom property and increase with property size. A three or four-bedroom house at Farehurst Park, The Orchards, or Poppyfields typically costs £345 to £395. For five-bedroom homes at the upper end of The Orchards range, the fee is £395 to £450. Re-inspections - where our inspector returns after repairs are completed to verify the work - are charged at £125. All prices are fixed before booking.
Yes. Both Hill Residential and Shelbourne Estates permit independent pre-completion inspections at their CB21 developments. Contact the sales team at Farehurst Park or The Orchards to request pre-completion access and then book your inspector. Reputable developers routinely accommodate pre-completion surveys - if a developer refuses access, that is itself a warning sign. Hill's five-star HBF rating indicates a commitment to customer service, but independent inspection is still the only way to get an objective record of your home's condition at handover.
A typical two or three-bedroom new build at Farehurst Park takes two to three hours. A four or five-bedroom detached at The Orchards, with underfloor heating, premium kitchens, and larger floor area, typically takes three to four hours. We ask for access before completion where possible, before furniture and personal belongings limit access to floors and wall bases. If you have already moved in, we can still complete a thorough inspection, though some access points may be partially obstructed.
The British Geological Survey's published mapping confirms gault clay is present across the Fulbourn and Teversham areas of CB21. It classifies this formation as having very high shrink-swell potential. Gault clay expands when wet and contracts when dry, exerting seasonal pressure on foundations. The NHBC requires specific heave protection design for foundations on expansive clay - typically void-form shuttering under ground-bearing concrete slabs. When this protection is inadequate, foundations can move. The Darwin Green case in Cambridge CB3 (January 2024) is the most documented recent example: Barratt demolished 36 completed homes and remediated a further 47 plots due to foundation heave on clay ground. CB21 buyers on new build developments have a legitimate reason to want their foundation areas, external ground drainage, and early structural movement documented by an independent inspector.
Flood risk and a snagging survey address different things. Your conveyancer's environmental search and the EA flood map tell you whether a Linton new build is in a flood risk zone. A snagging survey documents the physical condition of your home at handover - including the damp proofing at ground floor level, drainage connections, and any construction defects. If a Linton property has any vulnerability to surface water or groundwater, the inspection record of drainage condition at handover becomes a useful baseline document. We recommend checking the EA flood map for your specific Linton address before exchange of contracts, regardless of whether you commission a snagging survey.
On CB21 volume and boutique developments, our inspectors most frequently find: incomplete or inconsistent brickwork pointing; window reveals without cavity trays or weep vents; airtightness seals missing at window frame perimeters; floor screed cracking and unevenness in the first year on clay-ground properties; paintwork holidays and touching-in on walls and ceilings; kitchen unit alignment and plinth fitting issues; silicone seal failures in wet rooms; and mechanical defects such as MVHR or extract ventilation not commissioned to design airflow rates. On higher-spec homes like The Orchards, underfloor heating zoning and commissioning is an additional check point.
Before legal completion is the best time. You retain maximum leverage as a buyer - issues identified before completion can be written into your completion paperwork as required works. If your developer is offering an early completion incentive, be cautious: commercial pressure to complete quickly can mean the snagging is less thorough on the developer's own walkthrough. If you have already completed, book your inspection within the first few weeks of moving in to allow time for remediation within the two-year NHBC defects window. For gault clay movement, a second inspection during the first dry summer - when seasonal contraction is at its peak - can catch foundation-related cracking that was not present at handover.
Yes. CB21 sits within a well-served inspection corridor for new build snagging. Fulbourn and Linton are familiar territory for experienced East of England snagging inspectors - because new build activity in CB21 is concentrated on a small number of sites (Farehurst Park, The Orchards, and Poppyfields), inspectors who regularly work these developments already know the typical build quality issues and the local ground conditions. We cover all CB21 postcodes. Booking lead times vary by season - spring and early summer are the busiest periods as developers rush completions before the financial year end. We recommend booking as soon as your developer confirms a target completion date, rather than waiting until the week before.
Our full range of property survey services covering CB21 and the wider Cambridge area
From £395
The standard homebuyer survey for CB21 properties in reasonable condition. Covers condition ratings, defects advice, and issues for your solicitor.
From £595
Full structural survey recommended for older CB21 village properties - Victorian and Edwardian gault brick farmhouses, timber-frame cottages, and pre-1919 housing.
From £75
Energy Performance Certificate for CB21 properties. New builds at Farehurst Park and The Orchards typically achieve A or B ratings. Older village homes often D or E.
From £295
RICS-qualified valuation for Help to Buy equity loan redemption on CB21 properties. 5-working-day turnaround, recognised by Homes England.
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CB21 new builds sit on the same gault clay that caused Cambridge's most costly foundation failure. Our inspectors find what developers miss.
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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.