99 Structural Engineers
Call +44 20 3833 1899Get a free quoteListed byLocufy
Building contractor · London

5.0 on Google from 40+ reviews

99 Structural Engineers — builders in London

99 Structural Engineers is a Kensington-based practice that focuses on residential work, carbon zero projects and MMC jobs. Its work includes refurbishments, extensions, basements, listed buildings, and public sector and commercial schemes.

5.0Google · 40+ reviews
23services listed
Londonarea
5.0 on Google40+ reviews
23 servicestypical London prices shown
London & 15 kmIslington, City of Westminster, Croydon, Harrow…
Free written quotesno obligation, nothing to pay
Services & prices

What 99 Structural Engineers does — and what it typically costs in London

Every job below can be priced from this page. The ranges are what London homes typically pay, from Locufy's price guides. 99 Structural Engineers confirms the exact figure in a written quote — asking is free, with no obligation.

Building & extensions

BuilderGeneral building work
£180–400per dayprice guide →
House extensionSingle or two-storey
£1,800–4,000per m²price guide →
Loft conversionAttic into a usable room
£30,000–95,000per projectprice guide →
Garage conversionGarage into living space
£10,000–30,000per projectprice guide →
Conservatory installerSupplied and built
£8,500–32,000per projectprice guide →
BricklayerWalls, piers and repairs
£200–380per dayprice guide →
GroundworksFoundations, drainage and levels
£2,500–15,000per projectprice guide →

Kitchens, bathrooms & interiors

Kitchen fitterUnits, worktops and appliances
£6,000–25,000per kitchenprice guide →
Bathroom fitterStrip out and full refit
£4,000–15,000per bathroomprice guide →
Wet room installerTanked and fully tiled
£5,000–15,000per roomprice guide →
TilerFloors and walls
£30–100per m²price guide →
PlastererSkimming and patch repairs
£200–700per roomprice guide →
Carpenter & joinerDoors, frames and fitted joinery
£180–400per dayprice guide →
Flooring installerWood, laminate and vinyl
£18–70per m²price guide →

Roofs, walls & windows

RooferPitched roofs and repairs
£150–2,000per jobprice guide →
Flat roofingFelt, rubber and fibreglass
£1,200–6,500per roofprice guide →
Roof repairSlipped slates and leaks
£150–1,000per repairprice guide →
Guttering installationNew gutters and downpipes
£400–1,600per jobprice guide →
Fascias & soffitsReplace rotten timber boards
£1,400–4,500per jobprice guide →
Window & double glazing installerSupplied and fitted
£350–1,500per windowprice guide →
Damp proofingSurvey and treatment
£500–4,000per jobprice guide →

Typical prices from Locufy's UK 2026 price guides — each guide explains what the job involves and what moves the price. Rendering and insulation installer are also offered, priced on survey.

Get a free quoteCall +44 20 3833 1899Your details go only to 99 Structural Engineers.
5.0
on Google · 40+ reviews
About

About 99 Structural Engineers

99 Structural Engineers is a Kensington-based practice that focuses on residential work, carbon zero projects and MMC jobs. Its work includes refurbishments, extensions, basements, listed buildings, and public sector and commercial schemes.

You can ask for a written price on any building job from this page — an extension, a kitchen refit, a roof that leaks — and compare it with other London builders if you want to.

At a glance

Trade
Building and construction
Based
London
Covers
London and 15 km around
Google
5.0 · 40+ reviews
Hours
Mon–Fri 9:00–17:00
Quotes
Written, free, no obligation
How it works

A written price, with no obligation

1

Describe the job

A line or two and a photo if you have one — it takes a minute.

2

99 Structural Engineers prices it

Locufy passes it on; they come back to you with a written price.

3

Book, or compare

Happy? Book the date directly with them. Not sure? Compare quotes from other London builders.

Reputation

How 99 Structural Engineers is rated

5.0
Google · 40+ reviews

As published on Google, refreshed on each visit.

Read the reviews on Google →

Reviews from Locufy bookings appear here

Every Locufy review comes from a job booked through Locufy, so each one is a real customer. Booked 99 Structural Engineers? You can leave the first one after the job.

Ask 99 Structural Engineers

Have a question before you book?

Do they handle planning? Are they on the voluntary construction register? Ask here — Locufy passes it to them and emails you their answer.

Your email is used only to send you the answer.
Areas

London and the towns around it

Based in London, 99 Structural Engineers works across the city and about 15 km around it.

  • London
  • Islington
  • City of Westminster
  • Croydon
  • Harrow
  • Tottenham
  • Wembley
  • Fulham
  • Southall
  • Hounslow

Outside this area? Builders near you →

Questions

Before you book

Do you work on home refurbishments and extensions?

Yes. Refurbishment and extension work on homes is a core part of the practice, including open plan conversions that keep an existing facade and rooftop extensions.

Can you help with listed buildings?

Yes. The practice has handled planning for a listed house, alterations to a Grade II listed school, and internal refurbishment of a listed timber cottage.

Do you handle basement projects?

Yes. One of the practice's basement projects near Chelsea received a successful planning application.

Can you advise if I am worried about the structure of my property?

Yes. The practice gives advice on structural concerns, and the home page invites people who are worried about their property to get in touch.

Do you take on public sector work?

Yes. The practice is on the supplier database for the Royal Borough of Kensington and Chelsea and has carried out a survey and wall works for park management in Holland Park.

Get a written price from 99 Structural Engineers

You can compare it with other London builders too.