Chelsea SW3 · Mansion Block & Leasehold Specialists

Flat Refurbishment in Chelsea

Leasehold Expertise, Luxury Finish.

Complete refurbishment of Chelsea flats — mansion blocks, period conversions, and contemporary apartments. Freeholder liaison, Party Wall compliance, and Part E sound insulation managed end-to-end by our in-house team.

From £50,000 8–16 weeks 10-year guarantee

Call 020 8054 8756 Book Free Survey
★★★★★ 4.9/5 from 120+ reviews · 30+ Chelsea flats completed
10-Year Guarantee
Licence to Alter Expertise
Part E Sound Insulation
Freeholder Liaison
£5M Insured
£50k+
Starting investment
8–16 wk
Typical timeline
30+
Chelsea flats delivered
10 yr
Structural guarantee
Accredited · Vetted · Insured
FMB
FMB MemberFederation of Master Builders
TM
TrustMarkGovernment Endorsed
CIOB
Chartered BuilderMCIOB Project Manager
CEng
Chartered EngineerCEng MIStructE in-house
GS
Gas SafeRegistered engineers
NIC
NICEICApproved contractor
£5M
Fully InsuredPublic & employer's liability
10yr
Structural WarrantyInsurance-backed

What a Chelsea Flat Refurbishment Includes

Every element delivered by our in-house team — no subcontractors, no surprises.

Leasehold & Consent

  • Licence to Alter applications
  • Freeholder & managing agent liaison
  • Party Wall Act compliance
  • Building Control coordination
  • Specification sign-off
  • Neighbour consultation

Structural Within Flat

  • Load-bearing wall removals
  • Steel beam installation
  • Structural engineer’s design
  • Method statements & RAMS
  • Floor reinforcement where required
  • Acoustic floor buildups

Mechanical & Electrical

  • Complete rewire within demise
  • New consumer unit & circuits
  • Full replumb & new boiler
  • Underfloor heating systems
  • Smart lighting & controls
  • MVHR & extraction

Sound & Acoustic

  • Part E sound insulation
  • Impact & airborne testing
  • Resilient ceiling systems
  • Acoustic floor mats & battens
  • Wall lining acoustic upgrade
  • Pre-completion testing

Kitchen & Joinery

  • Bespoke cabinetry
  • Stone or quartz worktops
  • Integrated premium appliances
  • Joinery & storage solutions
  • Extraction & ventilation
  • Tiling & splashbacks

Bathrooms & Finishes

  • Full tanking & waterproofing
  • Bespoke tiling & natural stone
  • Underfloor heating
  • Walk-in showers & freestanding baths
  • Plastering & decoration
  • Engineered oak flooring

What Does a Chelsea Flat Refurbishment Cost?

Every Chelsea project is different. These ranges give you a realistic benchmark — final quotations are fixed-price and delivered after a free site survey.

Typical Chelsea Flat Refurbishment

Starting from
£50,000
1 bed flat · cosmetic refresh + kitchen/bath £50k – £90k
2 bed flat · full refurbishment £90k – £160k
3 bed flat · full refurbishment + layout changes £160k – £260k
Mansion block · full refurbishment with structural £220k – £360k
Luxury full-floor flat · premium specification £400k+
All quotes are fixed-price & itemised. We absorb cost overruns — the price we quote is the price you pay.

From First Call to Final Handover

A structured six-stage process with a dedicated project manager and weekly updates throughout.

1

Free Survey & Brief

Week 1

On-site survey, measurements, access assessment. We review your lease, building rules, and consent requirements.

2

Design & Fixed Quote

Week 2–4

Detailed drawings, acoustic strategy, and a comprehensive fixed-price quotation with itemised line-by-line costs.

3

Consents & Approvals

Week 4–12

Licence to Alter, freeholder sign-off, Party Wall awards, and Building Control submissions — all managed in-house.

4

Strip-Out & Structure

Week 1–3

Protection of communal areas, soft strip, structural works, new M&E first-fix. Strict adherence to works hours.

5

Finishes & Fit-Out

Week 3–14

Second-fix electrics and plumbing, plastering, joinery, kitchen and bathroom installation, flooring, decoration.

6

Testing & Handover

Week 15+

Acoustic testing, snagging inspection, all certifications and warranties issued, and freeholder sign-off.

Completed Chelsea Flat Refurbishment Projects

A selection of our most recent flat refurbishment projects across SW3.

View all Chelsea refurbishment case studies

What Chelsea Homeowners Say

Verified reviews from clients across Chelsea. We're rated 4.9/5 from 120+ reviews on Google, Houzz, and TrustMark.

"

The Licence to Alter application with our freeholder was handled start to finish, and the Part E acoustic performance was genuinely superior to what we had before. The team protected the communal areas perfectly throughout the build.

AB
Alexander & Beth Hollister
Carlyle Mansions · Mansion block · £215k
★★★★★
"

We were nervous about refurbishing in an occupied building, but the neighbour communication and strict works hours meant we kept good relations with everyone. Finished kitchen and bathrooms are a genuine upgrade on anything we had seen elsewhere.

NM
Nadia Moreau
Cadogan Gardens · Period conversion · £190k
★★★★★
"

Sound insulation, lift protection, and freeholder sign-off — things we had no idea about — were all handled seamlessly. Fixed price was honoured to the pound. The finished flat looks like an architectural magazine feature.

RK
Rajiv Khanna
Whitelands House · Mansion block · £310k
★★★★★

★★★★★  4.9/5 average from 120+ verified reviews

Built for Chelsea Flats

Chelsea flats span mansion blocks, Georgian conversions, period terraces, and luxury contemporary developments. Each has its own freeholder rules, structural constraints, and neighbour considerations.

Mansion Blocks & Period Conversions

We have delivered refurbishments in Carlyle Mansions, Whitelands House, Rossetti Garden Mansions, and Cadogan Square. We understand freeholder processes, prescribed works hours, and how to protect shared hallways, lifts, and landings throughout a build.

Licence to Alter & Freeholder Consent

Almost every Chelsea flat refurbishment triggers a Licence to Alter. We manage the full application process, respond to surveyor queries, and liaise with managing agents from initial enquiry to signed deed — typically within 6–12 weeks.

Part E Sound Insulation & Neighbours

Part E of the Building Regulations governs airborne and impact sound between flats. We design to exceed minimum standards, carry out pre-completion testing, and handle all neighbour communication for works in occupied buildings.

30+
Chelsea flats delivered
LTA
Licence to Alter experience
Part E
Sound insulation tested
10 yr
Structural guarantee
£5M
Public liability cover
CEng
Chartered engineers in-house

No Subcontractors. No Surprises.

One company, one contract, one point of contact. Every trade is directly employed by Hampstead Renovations.

🔨

In-House Craftsmen

All trades directly employed and NVQ qualified. Carpenters, plasterers, electricians, plumbers — all salaried, all vetted.

📐

Chartered Engineers

CEng MIStructE engineers design every structural alteration in-house — no external consultants, no coordination delays.

🛡️

10-Year Guarantee

Insurance-backed warranty. 5-year workmanship guarantee. Manufacturer warranties on all fixtures.

💷

Fixed-Price Contracts

Detailed, itemised quotations. We absorb cost overruns — the price we quote is the price you pay.

💬

Dedicated Project Manager

One point of contact throughout. Weekly site updates, photo progress reports, and a direct WhatsApp channel.

🏛️

Listed Building Specialists

Extensive RBKC experience with Listed Building Consent, conservation area applications, and Article 4 restrictions.

Meet Your Chelsea Team

Every Chelsea refurbishment is assigned a dedicated project team. Here's who you'll work with day-to-day.

JW

James Whitfield

Project Manager

15 years managing premium London refurbishments. Your single point of contact from survey through handover. Weekly site meetings and direct WhatsApp line.

MCIOBPRINCE215 yrs
SL

Dr. Sophia Lin

Structural Engineer

Chartered structural engineer designing all load-bearing alterations, underpinning schemes, and Grade II listed interventions for Chelsea clients in-house.

CEngMIStructEPhD12 yrs
MO

Marcus O'Donnell

Site Manager

18 years running complex central London sites. Full-time on your project managing trades, logistics, neighbours, and RBKC inspections. CSCS Black Card.

CSCS BlackSMSTSFirst Aid18 yrs

Plus 20+ directly-employed craftsmen: carpenters, plasterers, electricians, plumbers, decorators — all NVQ qualified, DBS checked, and salaried.

Other Chelsea Refurbishment Services

Looking for another type of refurbishment? We deliver the full range across Chelsea.

Flat Refurbishment Questions

Common questions about flat refurbishment in Chelsea.

Do I need a Licence to Alter for flat refurbishment in Chelsea?
Almost certainly yes. Most Chelsea leases require Licence to Alter (LTA) for any structural, mechanical, or significant layout change. We manage the full LTA application with your freeholder or managing agent, including liaison with their surveyor and any specification revisions.
How long does a flat refurbishment take in Chelsea?
A complete Chelsea flat refurbishment typically takes 8 to 16 weeks on site. Licence to Alter processing can add 6–12 weeks before works start. We provide a detailed programme including consent timing before any contract is signed.
What is Part E and does it apply to my flat?
Part E of the UK Building Regulations governs resistance to the passage of sound between flats. If you are altering floors, walls between flats, or ceilings, Part E compliance is required. We design to exceed minimum standards and provide pre-completion acoustic testing.
Can I live in the flat during refurbishment?
For full refurbishment involving rewiring, replumbing, and kitchen or bathroom work, we strongly recommend vacating. Noise, dust, and loss of services make continuous occupation impractical. For cosmetic-only work, phased occupation is sometimes possible.
How do you protect the rest of the building?
We install full communal area protection on day one — floor coverings, wall protection, lift protection, dust barriers. We enforce works hours strictly, manage deliveries through scheduled slots, and dedicate a site manager to neighbour liaison throughout.
What if my freeholder refuses consent?
Freeholders cannot unreasonably withhold consent for reasonable alterations. If there are specific concerns — fire, sound, structural — we adjust the specification and negotiate a workable solution. In 30+ Chelsea flat projects, we have secured consent on every one.
Who manages the project day-to-day?
Every flat refurbishment is assigned a dedicated Project Manager plus a full-time Site Manager on-site throughout the build. You get a single point of contact, weekly progress meetings, shared WhatsApp, and photo reports every Friday.
What warranties do you provide?
We provide a 10-year insurance-backed structural warranty, a 5-year workmanship guarantee, and manufacturer warranties on all fixtures and appliances. We carry £5M public liability and £5M employer’s liability insurance.

Book Your Free Chelsea Flat Survey

We’ll review your lease, assess the flat, and deliver a fixed-price quotation within 14 days. No obligation, no pressure.

Your details are confidential Response within 24 hours No obligation

Ready to Start Your Chelsea Flat Refurbishment?

Book a free, no-obligation survey. We’ll review your lease, assess your flat, and provide a detailed fixed-price quotation within 14 days.

Call 020 8054 8756