Frequently Asked Questions
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What makes Charlie's Windows different from going directly to manufacturers?
We serve as your single point of contact, coordinating with carefully vetted manufacturing partners across traditional production centres. As Central London residents and window specialists, we understand both the unique challenges of Westminster and Kensington's heritage properties and the complexities of the glazing industry.
This dual expertise delivers exceptional value through established supply chains rather than premium London pricing, plus comprehensive planning, compliance and project management that manufacturers typically cannot provide.
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Do you handle listed building consent and conservation area approvals?
Yes, this is one of our core specialties. We manage the entire planning process including professional technical drawings, application submission and direct liaison with conservation officers.
Our experience across Westminster, Kensington & Chelsea and surrounding boroughs means we understand what works with different planning departments and conservation teams, from Westminster's Grade I properties to Chelsea's historic terraces.
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How do your commercial property surveys work?
We conduct thorough, independent assessments that provide detailed condition reports with comprehensive photographic documentation and prioritised recommendations.
Our surveys are competitively priced and conducted to the highest professional standards. Using this survey intelligence, we can optionally manage your entire procurement and tendering process—delivering significant cost and time efficiencies through single-source accountability.
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What are the benefits of your supply chain approach?
Our manufacturing partners are carefully vetted for quality, compliance and reliability. Their strategic locations in established production centres deliver superior craftsmanship while avoiding the cost premiums associated with London-based operations.
We coordinate all aspects of supply, delivery and installation, providing complete single-point accountability and seamless project delivery.
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Can you help with complex commercial or institutional projects?
Absolutely. We regularly work with managing agents, architects, construction companies, hotels, property developers and institutional clients on projects ranging from routine maintenance to major refurbishment programmes.
Our project management approach is specifically designed to minimize disruption while ensuring quality outcomes and full compliance with heritage requirements and building regulations.
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What happens if problems arise during a project?
As your single point of contact, we take complete responsibility for resolving any issues that arise.
Our established relationships with suppliers and comprehensive project management approach means problems are rare, but when they do occur, we handle them directly without you having to coordinate with multiple parties or suppliers. Your time is valuable—we protect it meticulously.
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What areas of London do you cover?
We serve Central London with particular expertise in Westminster, Kensington & Chelsea, Camden and Islington.
Our specialist knowledge extends to areas with high concentrations of listed buildings including Belgravia, Mayfair, South Kensington, Chelsea, Bloomsbury and properties near major landmarks such as Westminster Abbey, V&A Museum and Royal Albert Hall.
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How long do projects typically take?
Project timelines vary depending on complexity and planning requirements.
Simple secondary glazing installations can often be completed within 2-3 weeks, while bespoke timber windows with listed building consent may take 12-16 weeks.
We provide realistic timelines upfront and keep you informed throughout the process.
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Do you offer warranties and aftercare?
Yes, all our installations come with comprehensive manufacturer warranties plus our own service guarantee. We provide ongoing aftercare support and can arrange periodic maintenance checks to ensure your windows continue performing optimally.
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What's the typical cost range for your services?
Costs vary significantly based on window type, size, performance requirements and heritage constraints. We provide detailed, transparent quotations with no hidden costs.
Our supply chain approach delivers substantial savings by leveraging over a decade of sourcing excellence—we've built direct relationships with premier manufacturers to secure optimal products, pricing, delivery and warranties, then complemented this foundation with our specialized services to provide a single-source, best-in-market solution.
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Do you work on both residential and commercial properties?
Absolutely. We serve discerning homeowners, managing agents, architects, construction companies, hotels, property developers and institutional clients with the same professional standards and attention to detail.
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Can you work around occupied buildings?
Yes, our project management approach is specifically designed to minimize disruption. We coordinate timing with your schedule and can work in phases to ensure buildings remain operational throughout the installation process.