Hartwell & Stone
Building Excellence Since 1987. Trusted by homeowners across Essex for extensions, loft conversions, renovations and new builds.
Why Hartwell & Stone
Transformed our home beyond anything we imagined. The team were professional and communicated brilliantly throughout.
— Sarah & James MitchellOur Services
Extensions
Single, double, rear, side and wrap-around extensions that seamlessly blend with your existing home.
Learn More →Loft Conversions
Dormer, hip-to-gable, Velux and L-shaped conversions to maximise your living space.
Learn More →Renovations
Complete home transformations, from period property restoration to contemporary refurbishments.
Learn More →New Builds
Bespoke new-build homes designed and constructed to the highest standards.
Learn More →Kitchens
Luxury kitchen installations, from structural work to the final finishing touches.
Learn More →Bathrooms
Premium bathroom design and fitting, including plumbing, tiling and fixtures.
Learn More →
Before & After
How We Work
Consultation
Free site visit to discuss your vision, assess feasibility and provide initial guidance.
Design
Detailed plans and 3D visualisations. We work with architects to perfect every detail.
Planning
We handle all planning applications, building regulations and party wall agreements.
Build
Expert construction by our in-house team. Regular updates and a dedicated project manager.
Handover
Final snagging, deep clean and handover. Your project backed by our 10-year guarantee.
Consultation
Free site visit to discuss your vision, assess feasibility and provide initial guidance.
Design
Detailed plans and 3D visualisations. We work with architects to perfect every detail.
Planning
We handle all planning applications, building regulations and party wall agreements.
Build
Expert construction by our in-house team. Regular updates and a dedicated project manager.
Handover
Final snagging, deep clean and handover. Your project backed by our 10-year guarantee.
Serving Essex & Beyond
Based in Chelmsford, we serve homeowners across Essex and into East London. From the coast to the countryside, our team delivers the same exceptional quality wherever your project is located.
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