About Niwaway Construction​

NiwaWay Construction is a South London–based construction company founded by Konrad Niwa, bringing over a decade of hands-on experience. Built on trust, quality, and meticulous attention to detail, we deliver work that reflects each client’s vision.

Proudly serving London, including areas like Streatham, Balham, Notting Hill and surrounding neighbourhoods, we provide reliable, high-quality building services for homeowners and businesses alike. Whenever you’re searching for construction companies nearby and need builders for renovation or structural work, our team offers dependable craftsmanship with a local touch. From small jobs to full-site developments, we prioritise clear communication  and a seamless project experience—making us an ideal partner for construction across South London and beyond.

Our skilled, dedicated team creates spaces that are functional, lasting, and beautifully finished—building strong homes and even stronger community relationships.

Our Services

Structural Construction – House extensions, loft conversions, structural repairs, general building, and garage or commercial conversions

Planning & Utilities – Project planning, management, and complete plumbing and electrical installations

Interior Renovation – Full-house, bathroom, and kitchen refurbishments, plus plastering, rendering, tiling, painting, decorating, and bespoke carpentry

Outdoor & External Works – Patios, paving, and fencing tailored to elevate your outdoor space

No matter the size or complexity of the project, NiwaWay delivers results you can rely on—every step of the way.

Recent Jobs

See what we've been building...

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Proud Member of the Federation of Master Builders

NiwaWay is a verified member of the Federation of Master Builders (FMB), demonstrating our commitment to quality craftsmanship, professionalism, and trust. View Certificate

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Why Choose NiwaWay?

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Client Satisfaction

Your satisfaction is our priority. We work closely with you to bring your vision to life.

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Reliability

Count on us for punctuality, transparency, and professionalism at every stage of your project.

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Experience

With years of experience in the construction industry, we bring a wealth of knowledge and expertise to every project.

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Quality

Our commitment to high-quality workmanship which exceeds your expectations.

Frequently Asked Questions

What services do you offer?

NiwaWay specialize in house extensions, loft conversions, kitchen and bathroom renovations, and general building work. We also provide property maintenance, structural construction, garage conversions, plumbing and electrical installations, plastering, tiling, painting, bespoke carpentry, and outdoor works like patios, paving, and fencing—delivering high-quality results inside and out.

Simply contact us to schedule a consultation. We’ll discuss your needs, conduct a site visit, and prepare a tailored quote.

Yes. We offer no-obligation, free quotes after a consultation and site visit.

Absolutely. Niwaway Construction is fully insured with public liability and employer’s liability coverage for your peace of mind.

Project timelines vary depending on size and complexity, but we always provide a detailed schedule upfront and keep you updated throughout.

In most cases, yes. We work to minimize disruption, but we’ll advise you based on the nature of your specific project.

Yes. All our work is covered by a workmanship guarantee, and we use high-quality materials with their own warranties.

We work closely with architects and structural engineers. If you don’t have one, we’re happy to recommend trusted professionals.

Definitely. We’re experienced in collaborating with external architects and designers to deliver your vision.

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Contact Us

Contact Information

Copyright © 2025 NiwaWay Construction Ltd

Company Number: 15168329