3i Constructions

What 3i Constructions does

3i Constructions Ltd is a privately held, London-based residential construction contractor offering end-to-end building services to homeowners and property investors across Greater London. The firm's service portfolio spans eight integrated lines: full home renovations and restructuring, extensions and loft conversions, plumbing (including 24-hour service), gas boiler installation and repair (covering Ideal, Vaillant, and Worcester brands), roofing and repairs, bespoke kitchen design and installation, bespoke bathroom and wet room construction, and specialist brick cleaning and stone restoration. The company is headquartered at 119 The Grove, Stratford, London E15 1EN, with documented project case studies across Stratford, East Ham, Ilford, Upton Park, Chingford, and Barking.

The business operates on a sales-led, project-based model. Customers reach the firm via a published phone number (0208 125 3333) or a website quote form, after which bespoke project quotations are issued based on scope, materials, finish requirements, and labor. Representative pricing for a 3-bedroom to 5-bedroom conversion with rear kitchen extension in Ilford is £175,000–£250,000. The primary customer segment is residential property owners (both occupiers and buy-to-let investors) seeking space expansion, property value uplift, or restoration of projects abandoned by prior contractors. A secondary segment of property investors/developers is targeted for full refurbishments and rapid property turnarounds.

Operationally, 3i Constructions employs 26 staff and runs a flat, direct-to-customer distribution model with no resellers, marketplaces, or third-party channels. Lead generation is supported by a portfolio website, Facebook page, and email newsletter, while the firm does not disclose any proprietary technology, AI tooling, or integrated software platform. The company is privately held with no disclosed institutional investors, funding rounds, acquisitions, or leadership changes.

Name

3i Constructions

Legal name

3i Constructions Ltd

Website

https://3iconstructions.co.uk

Company type

Private

Operating status

Operating

Headcount range

11–50 employees

Short description

3i Constructions is a privately held London-based residential construction contractor delivering home refurbishments, extensions, loft conversions, plumbing, gas boiler, roofing, kitchen, and bathroom services to homeowners and property investors across Greater London boroughs.

Ownership category

akta.pro rank

Product category

Residential Construction Services

NAICS

Residential Remodelers (236118), New Single-Family Housing Construction (except For-Sale Builders) (236115)

SIC

General Bldg Contractors - Residential Bldgs (1520)

akta.pro primary industry

Residential Design-Build & Renovation-Integrated Builders (IMAFABAE)

akta.pro secondary industries

Architectural Reconfiguration & Structural Alterations (HSAPAEAB), Multi-Family Residential Construction (Apartments, Condos, Townhomes) (IMAFABAB)

Keywords

• Residential construction services
• Home renovation services
• Loft conversions
• Building extensions
• Property refurbishment

Headquarters

HQ city

London

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2C

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales

Revenue model

1. Construction Services: 3i Constructions generates revenue through one-time project fees for residential construction services including home refurbishments, extensions, loft conversions, and renovations. Revenue is project-based with pricing determined by scope, materials, and labor requirements. The company also provides supplemental services such as plumbing, gas boiler installation, roofing, and brick cleaning as part of comprehensive construction packages.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels4 records

Core offering

3i Constructions is a London-based construction firm providing residential property services for homeowners and property investors. Its offerings span home renovations, building extensions, loft conversions, plumbing, gas boiler installation, roofing and repairs, kitchen and bathroom installations, and brick cleaning and stone restoration across East and Northeast London.

Product overview

3i Constructions is a London-based construction company offering a comprehensive suite of residential construction and renovation services. The company operates as a single integrated service offering rather than a platform-plus-modules architecture. Its core service portfolio includes eight distinct offerings: Homes & Apartments (renovations and restructuring), Extensions & Loft Conversions, Plumbing Services, Gas Boiler Installation, Roofing & Repairs, Dream Kitchen Designs, Bathrooms & Wet Rooms, and Brick Cleaning & Stone Restoration. These services are delivered end-to-end from concept through construction to post-construction handover, with the company providing seamless communication, budgeting, staffing, on-site organisation, and quality workmanship throughout each project.

Differentiator

Problem solved

Functional benefit

Products and services

• Homes and Apartments Renovation

Quantifiable outcome

• Full house refurbishments completed in approximately 3 months (e.g., Barking project)
• +1 more outcomes

Segments2 records

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Scale indicators2 records

Recent moves4 records

Expansion highlights4 records

Broad incumbents

• Wickes: Wickes is a UK home improvement retailer that also offers kitchen and bathroom design-and-installation services alongside DIY supplies. Overlaps with 3i on kitchen, bathroom and trade-supply activities, but with a national retail footprint and a far broader customer base than 3i's local London contracting model.
• Anglian Home Improvements: Anglian is one of the UK's largest home improvement companies, covering windows, doors, conservatories, roofing and kitchens. Comparable to 3i in serving UK homeowners for renovation and upgrade work, but with national reach and a broader product set than 3i's London-focused portfolio.
• Everest Home Improvements: Everest is a long-established UK home improvements incumbent offering windows, doors, roofing, driveways and conservatories. Overlaps with 3i in residential roofing, extensions and external envelope work, but operates at much larger national scale and a wider product portfolio.

Others

• Travis Perkins: Travis Perkins is the UK's largest builders' merchant, supplying timber, bricks, plumbing and roofing materials to contractors and DIY customers. Not a direct competitor, but a key upstream supplier to residential contractors like 3i and a benchmark for trade-channel economics in UK construction.
• Jewson: Jewson is a major UK builders' merchant supplying heavy-side and light-side materials to trade and residential customers. Functions as a supplier and ecosystem partner to small UK residential contractors such as 3i Constructions rather than as a direct competitor.
• Howdens Joinery: Howdens is the UK's leading kitchen and joinery supplier, selling through a depot network to small builders and trades. Adjacent to 3i as a key materials supplier for kitchen and joinery installations, and indicative of the trade-supply ecosystem 3i operates within for residential renovation projects.

Direct peers

• Hammonds Construction: Hammonds is a UK specialist in loft conversions, garages and home extensions with a similar end-to-end project delivery model. Comparable to 3i Constructions in core service offering (extensions, loft conversions, full refurbishments) and target customer base of UK homeowners seeking added living space.

Market position

Weaknesses5 records

Competitive moat3 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/3i-constructions-ltd

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about 3i Constructions