Monmouth Park's 47 new homes sit above Blue Lias clay geology with one of the highest erosion rates in Europe. Our inspectors know what this ground demands.








Lyme Regis is built on an ancient landslide complex. The Black Ven-Spittles system - where permeable Upper Greensand sits atop impermeable Charmouth Mudstone clay - creates conditions that have caused repeated cliff and ground failures throughout the town's history. In May 2008, a 300-metre section of cliff east of Lyme slid into the sea, moving approximately 500,000 tonnes of material in a few hours. In November 2024, a cottage was left teetering on the edge of a 400-foot drop after a further cliff collapse, with geologists warning of intensifying failures.
Our inspectors carry out snagging surveys across DT7, covering Lyme Regis, Uplyme, Rousdon, and the surrounding area. On a new build in this location, drainage design is not a minor finish - it is a structural matter. Inadequate surface drainage is a direct contributor to slope instability. Our inspection checks drainage gradients, soakaway positions, and any signs of ground movement or differential settlement that could indicate an issue with the ground conditions beneath the build.
Beyond the geology, Lyme Regis new builds need the same snagging checks as anywhere: incomplete finishes, insulation gaps, misaligned joinery, plumbing defects, and building regulation compliance. At Monmouth Park, the only significant current new build development in DT7, our inspectors have the specific local knowledge to interpret what the ground beneath each plot requires.

£512,047
Average House Price
Lyme Regis, last 12 months (Rightmove/HM Land Registry)
£651,405
Average Detached
DT7, last 12 months (Rightmove)
£377,333
Average Terraced
DT7, last 12 months (Rightmove)
1,831
DT7 Households
Census 2021 (Dorset Council)
The Black Ven-Spittles landslide complex is one of the most studied and most active in England. In May 2008, a 300-metre cliff section moved approximately 500,000 tonnes of material into the sea over just a few hours - the BGS logged it in the National Landslide Database (ID 780/2). In June 2024, further significant cliff falls along the Jurassic Coast were captured on camera. In November 2024, a cottage was left metres from a 400-foot drop after a further failure. The mechanism is geological: rainwater percolates through permeable Upper Greensand, ponds at the top of impermeable Charmouth Mudstone clay, and builds pore water pressure until sections give way, typically in spring months after wet winters. Any new build in DT7 sits in or adjacent to this complex. Drainage from the build, including surface water routing, soakaway design, and road drainage, must be correct. A snagging inspector cannot assess ground stability - that requires a geotechnical engineer - but drainage defects in new builds in Lyme Regis are a more serious concern here than almost anywhere else in England.
Source: ONS Census 2021 (Dorset Council Area Profile for Lyme Regis). DT7 has an unusually high proportion of detached properties (42.2%) and a significant flat stock (22.1%), reflecting both the affluent rural-coastal character of the area and the concentration of seafront and town centre conversions.
Planning permissions for large-scale new build development in Lyme Regis are rare. The town's Conservation Area, protected Jurassic Coast UNESCO World Heritage Site designation, and stringent local planning policy mean that developers face significant constraints. The main current new build site is Monmouth Park, developed by Blakesley Estates adjacent to Colway Lane, within walking distance of the town centre and the Cobb harbour.
Monmouth Park offers 47 homes across a range of property types: 2-bedroom terraced and semi-detached, 3-bedroom semi-detached and end-terraced, 4-bedroom terraced, and 5-bedroom detached. Prices range from approximately £327,500 for a 2-bedroom home to £949,950 for a 5-bedroom detached. The specification is listed as high-end - bespoke kitchens with solid silestone worktops, underfloor heating to the ground floor, integrated appliances - which means the snagging checklist also covers the quality of these premium finishes.
At this price point, a snagging survey costing £370-£479 represents a tiny fraction of the purchase price. Buyers of £600,000-£950,000 properties in Lyme Regis who discover post-completion defects - particularly drainage or structural issues - face significant costs to pursue remediation once the developer has moved on. Getting a report before legal completion is the most effective protection available.
In addition to the standard snagging checklist - finishes, joinery, plumbing, electrical, insulation, and Building Regulations compliance - our DT7 inspections carry additional focus on ground-sensitive issues. Surface water drainage falls are checked against Part H of Building Regulations: a minimum fall of 1:80 for drain runs, correct connection to public sewer or approved soakaway, and no ponding evidence in the garden or at the perimeter of the building.
We also look for early signs of differential settlement: hairline cracks at window corners and door frames, sticking doors and windows, out-of-plumb reveal reveals, and floor level variation. On a new build, any cracking beyond hairline in the first months of occupation is a flag. Lyme Regis clay subsoil has shrink-swell characteristics that can cause movement in dry summers - correctly designed foundations account for this, but incorrectly designed ones do not.

Dorset estimates based on Dorset New Build Snagging Services published rates and New Build Inspections/HomeOwners Alliance 2026 national data. DT7 property values significantly exceed national averages; the survey cost as a percentage of purchase price is very low.
At Monmouth Park prices, the cost of a snagging survey is typically less than 0.1% of the purchase price. The value of finding and requiring repairs to drainage, insulation, or finishing defects before the developer's site closes is many times that. Contact Blakesley Estates' site office to arrange pre-completion access for an independent inspector - most developers cooperate, and the NHBC's own guidance encourages pre-handover inspections. If the developer insists on handover first, book within 24 hours of key collection and submit your defect list in writing to the developer within the first week. Under NHBC Buildmark warranty, documented defects raised in the first two years are the builder's responsibility to remedy.
Lyme Regis has been at the centre of some of the most expensive and technically complex coastal engineering in UK history. Phase 4 of the Lyme Regis Environmental Improvement Scheme, completed in 2015 at a cost of £20 million, involved the construction of 390 metres of new sea wall in front of the existing structure east of the town centre. Engineers drilled 2,500 soil nails - up to 19 metres long - into the cliffs under rope access conditions, and installed 60-120-year design-life mesh across the cliff face. This work directly protected 480 homes from cliff and coastal erosion.
In September 2022, further funding was secured for the Cobb Stabilisation Scheme, designed to protect the Cobb harbour wall - a structure that, without intervention, would have ceased to function as a breakwater by 2044, putting 100 or more properties back at direct risk. This level of ongoing engineering investment reflects how serious coastal management in Lyme Regis is taken.
For buyers purchasing at Monmouth Park or elsewhere in DT7, the proximity of properties to the protected and unprotected cliff areas is a material consideration. Our inspectors flag properties where drainage from the new build might discharge in a direction that could affect slope stability, and where finished land levels depart from the approved plans. The standard of coastal engineering in Lyme Regis is exceptional - the standard of new build construction should match it.

Enter your Lyme Regis property address and size. Pricing is based on property size and is fixed - no hidden charges for rural locations or access difficulty in DT7.
Contact the Monmouth Park site office to request pre-completion inspection access for an independent snagging surveyor. Most developers grant this; record any refusal in writing as it is relevant to any later defects dispute.
Our inspector works through every room, the external fabric, roof space, and drainage layout. Given the site's geology, surface water drainage receives particular attention. Thermal imaging is used to identify insulation gaps.
Your report arrives within 24 hours. Submit it formally to the developer in writing. Under NHBC Buildmark, they are responsible for all defects arising in the first two years; your documented report is the most effective way to enforce this.
Snagging surveys in DT7 typically start from £370 for a 2-bedroom property, rising to approximately £499 for a 5-bedroom home. At Monmouth Park prices - where homes range from £327,500 to £949,950 - the survey cost represents less than 0.1% of the purchase price. Use our instant quote tool to get a fixed price for your specific property size and address.
A snagging survey cannot assess ground stability or determine whether a plot is at future risk of slope movement - that requires a geotechnical engineer with ground investigation data. What our inspectors can assess is the construction quality of drainage, DPC installation, surface water routing, and any visible signs of differential settlement in the finished building. In Lyme Regis specifically, these checks are more critical than in most locations, because poor drainage from a new build can directly affect ground conditions in clay and clay-over-sandstone geology.
Yes. Our inspectors cover the Monmouth Park development on Colway Lane, and any other new build properties or conversions in DT7 - including Lyme Regis town, Uplyme, Rousdon, and the surrounding postcode area. If you are purchasing any new build property in DT7, contact us to arrange an inspection.
Most inspections in DT7 take 3-5 hours on site, depending on property size and specification. A 3-bedroom semi-detached at Monmouth Park typically takes around 3-4 hours; a 5-bedroom detached takes 4-5 hours. The external drainage inspection adds some time compared to a standard inspection, and thermal imaging is included for Part L compliance checks. Your written report is delivered within 24 hours.
For a brand-new property, a snagging survey is the appropriate inspection. However, given the specific geological setting of DT7, it is worth asking your developer for the site investigation report (ground investigation data, foundation design drawings) and reviewing these with your solicitor as part of the purchase process. Some buyers in high-value areas also commission an independent ground investigation report or geotechnical review prior to exchange - this goes beyond what a snagging inspector can provide but is a reasonable extra step in a location with Lyme Regis's erosion history.
NHBC Buildmark warranty covers structural defects in the property itself, but it does not cover damage caused by natural hazards such as landslides or coastal erosion that are outside the builder's control. This is why it is essential that the ground investigation report and foundation design for your DT7 property have been properly reviewed before you commit to purchase. Buildings insurance may cover sudden and unforeseen landslide damage depending on policy terms - check your policy carefully. Snagging surveys identify construction defects that are the developer's responsibility under warranty.
The primary differences are: drainage inspection is elevated to a priority check given the geological sensitivity of the site; we look carefully for any signs of differential settlement in the completed building that might indicate ground movement has begun; external brickwork and render below DPC level are inspected for any evidence of ground moisture or inadequate DPC installation; and where thermal imaging indicates cold bridges at junctions, we check that insulation continuity at ground floor level is complete, since floor-level insulation gaps are harder to remedy after occupation. All other standard snagging items apply as normal.
Yes. A snagging inspection carried out within the first two years of occupation is still valid and useful. Under NHBC Buildmark, the developer is responsible for defects arising during this period. Many buyers who missed the pre-completion window find that a post-move-in report - submitted formally in writing to the developer before month 24 - still results in remediation. Our written, photographed reports are designed to be used in exactly this way.
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Monmouth Park's 47 new homes sit above Blue Lias clay geology with one of the highest erosion rates in Europe. Our inspectors know what this ground demands.
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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.