/ Trusted builders in London

House extensions,loft conversions &home renovations in London

Trusted London builders delivering high-quality extensions, loft conversions, and full home renovations tailored to your needs.

Living room with marble fireplace – Notting Hill (W11) house renovation by Pawlus Group

Dining room with steel-framed glazing – Notting Hill (W11) renovation by Pawlus Group

Passive House garden office in Barnet built by Pawlus Group

Notting Hill · W11

Made-to-order timber sash windows for period London homes.

/ About us

Always dedicated & devoted

At Pawlus Group, we specialise in house extensions, loft conversions, and home renovations across London. With years of experience in the construction industry, we help homeowners transform their spaces with high-quality workmanship and attention to detail.

11Featured London projects

6Reasons clients choose us

/ Our services

Everything your home needs

Rear extension with steel-framed glazing – Notting Hill (W11) by Pawlus Group

01 / 06ConstructionHouse extensionsExpand your living space with a bespoke house extension – single-storey, double-storey and rear extensions that add value and functionality to your home.Discover

Top-floor landing with rooflights – Notting Hill (W11) by Pawlus Group

02 / 06ConstructionLoft conversionsTurn unused attic space into a beautiful, practical room – dormer, hip-to-gable and Velux loft conversions tailored to your property.Discover

Renovated living room – Notting Hill (W11) by Pawlus Group

03 / 06ConstructionHome renovationsFrom minor upgrades to full refurbishments – complete home renovation services in London, including structural work and interior finishing.Discover

Bathroom with freestanding bath – Notting Hill (W11) by Pawlus Group

04 / 06InteriorsKitchen & bathroom renovationsUpgrade your home with modern, stylish kitchens and bathrooms designed for comfort and durability.Discover

Timber sash window and restored staircase – Notting Hill (W11)

05 / 06Made to orderWindows & doorsMade to order period sliding sash windows, traditional flush casement windows, modern tilt and turn windows, sliding, folding, entry and French doors.Discover

Bespoke kitchen island – Notting Hill (W11) by Pawlus Group

06 / 06InteriorsBespoke kitchensKitchens designed with materials selected for each customer and assembled with the utmost care – ergonomic and made to measure.Discover

/ Windows & doors

Made to order for period homes

We offer made to order period sliding sash windows, traditional flush casement windows, modern tilt and turn windows, popular sliding or folding doors, durable entry doors and stylish French doors.

Traditional timber box sash window with the lower sash opening

1.1W/m²K U-value
double glazing as standard

Scroll to open

Sash windows · casements · doors

True to the original. Built to last.

Handcrafted in timber by experienced craftsmen and made to the exact size of your openings, our windows keep the character of a period home while giving it modern comfort: warmer, quieter and drier rooms.

TimberEngineered hardwood as standard — dense, fine-grained and stable.
GlazingFactory-sealed double glazing with Low-E glass and an argon cavity. Triple glazing on request.
GlassClear, toughened, laminated or obscure — chosen room by room.
OperationTraditional cords and weights, or a spring balance system.
SecurityHook fasteners and security lock stops on every opening sash.
FinishPrimed and factory-finished in a breathable microporous coating — brilliant white or any RAL colour.

1.1W/m²KU-value with double glazing as standard

6–8weeksMade to order and delivered ready to fit

AnyRALBrilliant white or any colour to order

FreeM25Delivery within the M25

Measure

Measure your openings in millimetres using our guide — or book a professional survey.

Specify

Choose the glass, finish colour and operation style for every window.

Made & delivered

Made to order and delivered ready to fit, typically in 6–8 weeks.

In production

**Arched sash frames**Bespoke shapes for period openings

**Box sash windows**Made to order, frame by frame

**Glazing bars**Traditional proportions, slim profiles

Primed and painted sash windows — **Primed & painted**Finished to your chosen colour

Sash windows ready for delivery — **Ready for delivery**Wrapped and protected for site

Price your sash windows online

Instant prices for made-to-measure timber box sash windows at our sister studio, Sash Window Bespoke.

Get an instant price Book a survey

/ How we work

From approved drawings to project completion

Hand-finished period door hardware – Notting Hill (W11) renovation by Pawlus Group

Restored staircase – Notting Hill (W11) house renovation

Completed living room with marble fireplace – Notting Hill (W11)

From approved drawings

We provide transparent and structured pricing, based on drawings and scope of works, allowing for clarity from the outset. Where any variations arise, these are communicated clearly and agreed upon before proceeding.

Working with your design team

We work closely with architects, designers, and structural engineers to ensure that every detail is executed accurately and in line with the approved drawings and specifications.

To project completion

As an experienced construction team, we focus on efficient project delivery, organised site management, and consistent quality throughout the build, ensuring a smooth process from start to completion.

Free quoteOur approach is built on clear communication, reliability, and attention to detail.Contact us

/ Latest work

Recent projects across London

01Full residential renovation · Kensington & ChelseaNotting Hill Gate02Corten steel & timber · FarringdonFaulkner’s Alley03Double storey extension · North LondonKitchen, North London04Garden office · BarnetPassive House at Barnet05Full residential refurbishment · IslingtonIslington 06Commercial fit-out · LondonANNA Jewellery

/ Testimonials

What our customers say

      
   Pawlus Group Ltd
   5 Google reviews 
  Write a review 
  
 
 
   
 
 
       Posted on Google  
   
   Matthew Sykes  
 
 
 
 Trustindex verifies that the original source of the review is Google. Can’t recommend enough - top quality, honest price. We’ve used them several times and it’s always such a good experience: never any problems, always the right solution. These guys really care about what they do and they’re very very good at it.
  
 
      Posted on Google  
   
   Carol shea  
 
 
 
 Trustindex verifies that the original source of the review is Google. A good professional reliable team.... would work with them again!
  
 
      Posted on Google  
   
   Jake Ireland  
 
 
 
 Trustindex verifies that the original source of the review is Google. Great working with Pawlus Group on a small but complex bespoke project. Andzej, Marcin, Rafal and the team delivered the excellent carpentry and attentive project coordination that the project required, and we were very pleased with the result.
  
 
      Posted on Google  
   
   Rosamund Woodcock  
 
 
 
 Trustindex verifies that the original source of the review is Google. Andrzej and his builder’s were very good and considerate. They asked me in advance if it was okay to come and do extra if needed. One of his guys, Adam came on a Saturday to do some work as it was forecast for rain the next few days. Andrzej always notified me if they were unable to come due to bad weather . They were also very understanding of any extra time needed to do a payment..all in all they were really hardworking and friendly people to have working for me on my project.
I would recommend them.
Rosamund Woodcock

/ Why choose us

Why choose Pawlus Group

Our clients know they can count on us to get the work done promptly from start to finish and on budget.

01. Reliable Construction Partner

We understand the importance of delivering projects in line with approved drawings, specifications, and timelines. Our team is committed to consistency, reliability, and professional execution on every project.

02. Accurate Execution of Design

We work closely with architects and designers to ensure that all elements are built precisely as intended, maintaining the integrity of the original design throughout the construction process.

03. Clear Communication & Coordination

We maintain open and structured communication with all parties involved, including architects, engineers, and clients, ensuring smooth coordination at every stage of the project.

04. Transparent Pricing & Variations

Our pricing is based on detailed scope and documentation, providing clarity from the outset. Any variations are clearly communicated and agreed before implementation.

05. Organised & Professional Site Management

We run clean, well-organised sites with a focus on efficiency, safety, and quality control, ensuring minimal disruption and a professional working environment.

06. Experience in Residential Projects

We have experience delivering house extensions, loft conversions, and full refurbishments across London, working from technical drawings and within building regulations.

/ Get in touch today

Looking for reliable builders in London?

Tell us about your project and we will come back to you with a clear, structured quote based on your drawings and scope of works.

office@PawlusGroup.co.uk71-75 Shelton Street, WC2H 9, London