We specialise in all types of internal and external waterproofing, basement and cellar conversions, damp-proofing and specialist timber preservation and repair, providing tailored solutions to protect and enhance your home.

We operate across Hampshire, Surrey, London and surrounding areas, including Guildford, Ascot, Weybridge and Sunningdale.

With years of experience solving a wide range of property issues and designing new solutions, we are committed to quality and a customer-focused approach, ensuring expert solutions and exceptional service.

Survey fees start from £95 + VAT, depending on your property and requirements.

Once we have reviewed your enquiry and you have discussed your needs with the right specialist for your project, surveys are typically conducted within 1–2 weeks, depending on availability.

Survey reports are usually provided within two weeks following the survey. This allows us to conduct a thorough assessment and prepare a detailed, accurate and bespoke report tailored to your property’s needs.

Yes, where appropriate, the report will include a detailed quote outlining the scope of work and associated costs.

Surveys typically take 1–2 hours, depending on the size and condition of the property.

Project timelines depend on the scope and specifications of the work. For larger-scale projects, the lead time is usually 3–6 weeks. For the most accurate timeline, please contact our Operations Team, who will be happy to provide up-to-date information and guidance.

Yes, we typically provide a full end-to-end service, from the initial survey to completing the required works to the highest standard.

Yes, when installing a completely designed system, we offer guarantees for our work. The guarantee will be issued once the works are completed and payment has been received in full.

Yes, our surveyors are fully qualified and experienced in waterproofing, damp-proofing and related areas, ensuring expert assessments and recommendations. We are recognised industry experts, with several of our surveying team holding examiner roles for national qualifications.

We primarily employ our own surveyors and operatives to maintain quality and consistency. On rare occasions, trusted subcontractors may be used for specific specialist tasks such as electrical installations, plumbing, screeding and tiling.

Yes, we are longstanding full members of the Property Care Association (PCA) and have been affiliated since its inception, demonstrating our adherence to industry standards and best practices.

Yes, Advanced Basements is a trading name of Advanced Preservations Ltd, offering the same high-quality services under one company.

Drying times vary depending on conditions and thickness, but typically, plaster takes 2–4 weeks to dry fully. We recommend maintaining steady temperatures and gentle ventilation to speed up the process in a controlled way.

Important: Avoid using dehumidifiers, as this can cause the plaster to dry too quickly, leading to cracking or debonding.

Refitting works, such as skirting boards and refitting radiators, should only be carried out once all surfaces are fully cured and dry. This can take an additional 1–2 weeks after the main works are complete.

Our operatives usually arrive between 8:00 am and 8:30 am.

Potentially, yes. While we must complete key aspects of the work specification to ensure compliance and guaranteed protection, we often work alongside homeowners and building contractors to tailor the scheme to suit their needs.

To allocate labour, confirm your booking, and procure materials, we request an upfront deposit payment based on the contract value. From there:

• We provide interim invoices (typically monthly).
• A final invoice is issued upon completion.

• We primarily accept BACS transfers.
• We accept card payments up to a limit of £500 for survey fees and small items.
• We do not currently offer a finance package, but if you require staged payments to make the project more viable, please discuss this with your project surveyor.

Yes, we hold fully accredited, industry-specific insurance designed in line with Property Care Association best practices. Our policies include:

• Product & Professional Liability Insurance
• Dedicated Professional Indemnity Insurance

Not all insurance is created equal! We advise checking that your chosen contractor has meaningful cover that truly protects your investment.

Yes, our guarantees are fully insured. As a recognised specialist, we also have access to a 3rd Party Insurance-Backed Guarantee (IBG) scheme offered by QANW.

For an additional premium, these schemes provide extra protection in the unlikely event that we are no longer trading. If you require an IBG, please speak with your surveyor or our admin team.