Proficiency

What Proficiency does

Proficiency Design & Build Ltd is a London-based, founder-led residential construction company founded in 2011 that delivers a fully integrated design-and-build service to London homeowners. Its core offerings span house extensions (rear, side, double-storey, wrap-around), basement conversions, loft conversions, full house renovations, new builds, and interior design, executed end-to-end by an in-house team that includes architectural design, 3D rendering, structural engineering, project management, and the Novo Joinery sub-brand for bespoke kitchens and furniture. The company specializes in complex London-specific work, including heritage properties, Georgian-style townhouses, and Listed Buildings in conservation areas, and is differentiated by credentials including Federation of Master Builders accreditation, NICEIC Approved Contractor status, Gas Safe registration, Considerate Constructors Scheme membership, and a claimed 100% planning-application success rate.

The business operates on a project-based, one-time revenue model with fixed-price contracts and milestone payments, with individual projects ranging from £25K to over £500K depending on scope and finish level. Go-to-market is direct-to-consumer: homeowners reach the company via the website quote form (segmented into £25K–£75K, £75K–£500K, and £500K+ budget tiers), phone, or email, followed by an in-home consultation and an approximately 8-week planning phase before construction. The company supplements this with an owned SEO content engine (articles generating 1000+ visitors each), Google reviews (4.8/5 across 42+ reviews), KBB Magazine PR, and community events at its West Hampstead showroom. Customers are exclusively individual London homeowners and SMB property owners, concentrated in North-West London (Maida Vale, West Hampstead, Queens Park, Highbury) but with growing coverage across South London, Richmond, Twickenham, Chelsea, Kensington, and Wimbledon.

Operationally the company carries £5M Public Liability, £10M Employers Liability, Professional Indemnity, and Contractors All Risk insurance, enabling it to bid on higher-risk basement and structural projects typical of premium London work. The firm is privately held, has no disclosed outside funding, and operates at sub-scale (11–50 employees) within a single geography (Greater London). Its competitive position rests on regulatory credentials, in-house design-build integration, heritage/listed-building expertise, and brand reputation rather than technology or scale advantages; there is no indication of AI/ML capability, software products, or platform technology beyond conventional architectural drafting and project management.

Name

Proficiency

Legal name

Proficiency Design & Build Ltd

Website

https://proficiencyltd.co.uk

Company type

Private

Founded year

2011

Operating status

Operating

Headcount range

11–50 employees

Short description

Proficiency Design & Build Ltd is a London-based, founder-led residential construction company founded in 2011 that delivers integrated design-and-build services—including extensions, basement and loft conversions, renovations, and new builds—to London homeowners, with specialist expertise in heritage and listed-building work.

Ownership category

akta.pro rank

Product category

Residential Design and Build Construction

NAICS

Residential Remodelers (236118), Residential Building Construction (23611)

SIC

General Bldg Contractors - Residential Bldgs (1520)

akta.pro primary industry

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

akta.pro secondary industries

Renovation, Remodeling & Tenant Improvements (General Contracting) (IMAFAAAE), Custom Home Building (IMAFABAC), Architectural Reconfiguration & Structural Alterations (HSAPAEAB)

Keywords

• Residential design and build
• House extensions London
• Basement conversions
• Loft conversions
• Home renovations

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, Supply Chain, Marketing or Sales, Technology or R&D

Revenue model

1. Residential Construction Services: One-time project-based revenue from design and build services including house extensions, basement conversions, loft conversions, renovations, and new builds. Projects range from £25K to £500K+ depending on scope and luxury finishes. Revenue is generated through fixed-price contracts with milestone payments throughout the construction process.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels6 records

Core offering

Proficiency designs, plans, and builds residential extensions, basement conversions, loft conversions, full home renovations, and new-build homes for London homeowners under a single design-and-build contract. The firm supplies architectural design, structural work, and construction trades, and offers interior design as an additional service alongside the main build scope. Projects are scoped per property following a free initial consultation and quoted on a project-specific basis.

Product overview

Proficiency Design & Build Ltd is a London-based residential construction company offering a unified design-and-build service. The core portfolio comprises house extensions (rear, side, double-storey, wrap-around), basement conversions, loft conversions, full house renovations, new builds, and interior design. Services are delivered through a single dedicated team spanning architectural design, project management, and construction, with in-house capabilities supplemented by the Novo Joinery sub-brand for bespoke joinery and furniture. The company positions itself as a full-service provider managing every stage from initial concept and planning through to final finishes.

Differentiator

Problem solved

Functional benefit

Products and services

• House Extensions Side-return, rear, kitchen, and other residential house extensions for London homeowners, delivered through Proficiency's design-and-build model combining architectural design, structural work, and construction trades.
• Basement Conversions Design, structural engineering, waterproofing (tanking), and construction of basement and lower-ground-floor conversions for London homes, including light-well, underpinning, and excavation works.
• Loft Conversions Design, structural alteration, and construction of loft conversions such as dormer, hip-to-gable, and roof-light conversions for London residential properties.
• House Renovations Full and partial house renovations for London homeowners, covering structural alterations, reconfiguration, and interior fit-out delivered as a single design-and-build contract.
• New Builds Design and construction of new-build homes for London residential clients, delivered through the firm's integrated design-and-build service model.
• Design and Build Service An end-to-end design-and-build service for London residential projects, providing architectural design, structural engineering, and construction trades under a single contract with one point of accountability.
• Architectural Services In-house architectural design and planning services provided to homeowners as part of the firm's design-and-build projects.
• Interior Design Interior design service offered by Proficiency to residential clients, providing styling and interior fit-out alongside the firm's build services.

Quantifiable outcome

• 100% success rate on planning applications
• +3 more outcomes

Named customers2 records

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

One partnership is on record.

• Novo JoinerycoreImplementation/ SI/ Consulting PartnerNovo Joinery is part of Proficiency and designs and manufactures bespoke kitchens, joinery, and furniture for clients' homes. Olivia Lich serves as head kitchen designer at Novo Joinery.

Scale indicators4 records

Recent moves5 records

Expansion highlights4 records

Direct peers

• Clivedale London: London-based luxury residential developer and design-and-build contractor serving affluent homeowners with high-end extensions, renovations, and new builds in prime central London. Directly comparable to Proficiency in target customer, service mix, and project values.
• Basement Force: London specialist basement conversion contractor offering design, waterproofing, and construction services. Directly comparable to Proficiency's basement specialty line with similar BS 8102 compliance focus.
• Simply Loft: London-based loft conversion specialist serving homeowners across the capital with design-and-build loft services. Directly overlaps with Proficiency's loft conversion offering though narrower in scope.
• Oliver Burns: Luxury London interior design and construction firm delivering high-end residential refurbishments, extensions, and basement developments in prime central London. Comparable premium positioning and heritage property expertise.
• Storyboard Design & Build: London residential design-and-build firm offering extensions, loft conversions, and renovations with in-house architectural services. Closely comparable service model and customer segment to Proficiency.
• Echlin: London-based design-and-build and architectural practice specializing in high-end residential extensions and refurbishments in prime postcodes. Comparable integrated offering and luxury client base.
• Octagon Developments: Luxury home builder and renovation specialist in London and the Home Counties, focused on high-end residential construction, extensions, and basement projects. Comparable premium-end service portfolio and customer profile.

Broad incumbents

• Berkeley Group: Major London housebuilder and developer delivering large-scale residential developments and luxury homes across the capital. Serves a broader market than Proficiency but increasingly competes for premium residential renovation and extension work in London boroughs.

Emerging players

• Fraher & Findlay: London architectural and design-build practice focused on residential extensions, renovations, and bespoke home projects in urban settings. Comparable integrated design-build model with strong architectural identity.
• CrownLoft Conversions: London loft conversion and home extension firm serving residential customers with design-and-build services. Comparable in customer segment though typically smaller project scope than Proficiency's full-service offering.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/proficiencyltd
• LinkedInlinkedin.com/company/proficiency-ltd

Compliance8 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

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 Proficiency