Get in Touch For a Free Consultation & Fixed-Price Quote
High-quality house extensions, loft conversions, and complete home renovations across London and Surrey. Speak directly with our team to discuss your project.
Contact JSTM Construction
We are here to answer your questions, arrange site visits, review drawings, and provide clear quotations.
Send your plans or photos for a clear quote within 24 hours.
Strictly compliant with local council hours, clean and considerate conduct.
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Frequently Asked Questions
Here are answers to the most common questions about our quotation process, contracts, and how we manage projects.
How quickly will I receive my quote?
For detailed architectural drawings, we provide an itemised fixed-price quote within 5 to 7 working days. If you are at an early stage, we can provide indicative costings within 24 to 48 hours.
Can you work with my architect or interior designer?
Yes, absolutely. We frequently work alongside client-appointed architects, structural engineers, and interior designers, or we can provide complete design-and-build services if you prefer.
How do you guarantee fixed prices with no hidden extras?
We provide comprehensive, itemised contracts based on standard JCT guidelines. Every cost is clearly outlined before work starts. We never carry out extra work without your written approval in advance.
Do you arrange council permits and party wall agreements?
Yes. We coordinate with party wall surveyors, arrange skip permits, parking bay suspensions, and liaise directly with council building control inspectors to keep everything simple for you.
Planning a Listed Building or Conservation Area Project?
Our team has extensive experience with period homes, conservation permissions, and heritage craftsmanship.
Regulated, Certified & Fully Insured
£20,000,000 Contractor's All-Risks & Public Liability Cover backed by Zurich Municipal.