Bluebird Spaces
    Loft conversion and extension project in Marylebone by Bluebird Spaces
    Marylebone W1U

    Georgian Restoration Builders in Marylebone

    Period properties. Sensitive modernisation behind heritage facades.

    07564 041115Request a quote

    Marylebone's elegant Georgian terraces and mansion blocks deserve careful, considered renovation. We specialise in bringing these properties up to modern standards while preserving the proportions and detailing that make them special.

    Local project guide

    Planning a Marylebone period refurbishment

    Marylebone combines Georgian houses, mews homes and mansion blocks with complex ownership and heritage conditions. We begin with the approvals, existing structure and building services, then build a room-by-room scope that can be priced and programmed clearly.

    What to check before choosing a contractor

    • Confirm listed status, conservation policy and freeholder consent before altering structure or services.
    • Coordinate fire, acoustic and communal-service requirements for mansion-block projects.
    • Schedule samples, bespoke joinery and bespoke finishes before site work reaches the installation stage.
    Check Westminster City Council guidance

    Completed work

    Relevant projects for Marylebone homeowners

    View all projects →
    Completed Holland Park home renovation by Bluebird SpacesCompleted Holland Park home renovation by Bluebird Spaces — view 2Completed Holland Park home renovation by Bluebird Spaces — view 3
    Nearby example

    Holland Park Luxury Home Renovation

    1,700 sq ft

    View project
    Completed Chelsea apartment renovation by Bluebird SpacesCompleted Chelsea apartment renovation by Bluebird Spaces — view 2Completed Chelsea apartment renovation by Bluebird Spaces — view 3
    Nearby example

    Chelsea Luxury Apartment Renovation

    1,500 sq ft

    View project
    Completed Chiswick townhouse renovation by Bluebird SpacesCompleted Chiswick townhouse renovation by Bluebird Spaces — view 2Completed Chiswick townhouse renovation by Bluebird Spaces — view 3
    Nearby example

    Chiswick Period Townhouse Renovation

    3,200 sq ft

    View project

    Marylebone: landlords, leases and Westminster

    We haven't got a Marylebone project on the site yet. Our closest finished work is in Holland Park and Chelsea, on our projects page.

    Check your landlord

    Big parts of Marylebone belong to the Portman and Howard de Walden estates. Portman runs a formal Licence to Alter process for its tenants. With either estate, expect to need written consent under your lease before structural work. Westminster's Code of Construction Practice sets out what has to be submitted before a bigger job, especially a basement, can start.

    Related services

    Our Services in Marylebone

    Georgian Restoration

    Faithful restoration of original sash windows, panelled doors, cornicing, and fireplaces combined with discreet modern upgrades.

    • Heritage-sensitive scope
    • Priced at site visit
    • Westminster consent requirements checked
    Learn more →

    Mansion Block Refurbishment

    Complete apartment refurbishments within Marylebone's red-brick mansion blocks. Kitchens, bathrooms, rewiring, and replumbing.

    • 4–8 week programmes
    • Priced at site visit
    • Freeholder liaison included
    Learn more →

    Marylebone Cost Guide

    TypeTypical CostPlanning?
    Period BathroomPriced at site visitNo
    Kitchen RenovationPriced at site visitNo
    Mansion Block RefurbPriced at site visitNo
    Georgian Townhouse RenovationPriced at site visitOften yes
    Sash Window RestorationPriced at site visitIf listed

    All projects are priced individually after a site visit. Quotes exclude VAT and professional fees (design, structural engineer, Building Control, party wall and planning fees), which are quoted separately; access and logistics can affect the final price. Howard de Walden and Portman Estate properties may require additional estate approvals.

    Next step

    Discuss your Marylebone project

    Tell us what you are considering and choose a callback or site visit. We will review the property, scope and likely approval route before preparing a clear, itemised proposal.

    • Federation of Master Builders member
    • No deposit upfront; weekly payments for completed work
    • Itemised quote with VAT and exclusions stated clearly

    Request a Marylebone callback or site visit

    We'll confirm your callback or site visit within 24 hours.

    Common Questions

    Yes. We can work within either estate's consent process. The Portman Estate runs a formal Licence to Alter process, and Howard de Walden leaseholders generally need written consent under their lease. We haven't completed a Marylebone job yet, so we'd confirm the estate's requirements with you before pricing.

    Yes. Where we can, new services run through existing floors and voids, original features are kept and repaired, and materials are chosen to suit the building. Our closest finished period work is the Holland Park renovation, which restored period features alongside new interiors.

    Typically 4–8 weeks for a full apartment refurbishment. We coordinate with building management on deliveries and working hours.

    Most of Marylebone is a conservation area. Internal works rarely need consent, but external changes and listed building alterations do. We assess your specific situation.

    Yes. We'd bring in a dedicated sash joiner to repair and draught-proof them, which is often more sympathetic than replacement and can cost less. In a conservation area or a listed building, replacement windows may need consent anyway. Our nearest finished period work is the Holland Park renovation on our projects page.

    Nearby areas we cover

    Get Started

    Ready to talk about your project?

    Free site visit, then a fixed-price quote. No deposit upfront.

    Reach Out07564 041115