Business Details
Trusted Builders in High Wycombe
Established in High Wycombe, Iwanski Design is a family-run construction company with a proven track record of delivering high-quality domestic building projects. Specialising in renovations, extensions, and new builds across Buckinghamshire, Oxfordshire, Hertfordshire, and Berkshire, we collaborate closely with homeowners and architects to provide tailored solutions. Our commitment to exceptional craftsmanship, competitive pricing, and transparent communication has earned us a strong reputation through repeat business and referrals.With an in-house team of skilled professionals, we prioritise attention to detail, reliability, and value for money on every project, regardless of scale. Our focus on modernising properties while respecting period features ensures results that meet both functional and aesthetic needs. From initial consultation to completion, we maintain open dialogue with clients to address evolving requirements efficiently. This approach has solidified our position as a trusted partner for residential construction projects in the region.
Services
Extensions
Loft Conversions
Garden Rooms
Kitchen Fitting
Bathroom Design
Home Refurbishment
Decking
External Cladding
Highlights and features
- We are a family-run business with a proven track record in residential construction.
- Our competitive rates include no hidden fees or unexpected costs.
- In-house team of skilled bricklayers, plumbers, and carpenters ensures quality control.
- Commitment to delivering projects on time and within budget.
- Strong reputation built through repeat business and client referrals.
What people say
Highest standard
Professional
Reliable
Brilliant
Outstanding
Services
Extensions
We design and construct bespoke home extensions tailored to your space requirements. Our team ensures seamless integration with existing structures while maintaining compliance with local planning regulations. Clients benefit from enhanced property value and functional living areas.
Loft Conversions
Transform unused loft space into practical rooms such as bedrooms or offices. Our conversions maximise headroom and insulation while adhering to building regulations. This service provides cost-effective solutions for expanding living space.
Kitchen Fitting
From design to installation, we create modern, functional kitchens suited to your lifestyle. Our process includes cabinetry, appliance integration, and finishing touches. Clients receive durable, aesthetically pleasing spaces that enhance daily usability.
Bathroom Design
We deliver complete bathroom transformations with contemporary fixtures and layouts. Services include tiling, plumbing, and custom storage solutions. Clients enjoy refreshed spaces that combine style with improved functionality and water efficiency.
Decking
Custom-built decking and patio areas enhance outdoor living spaces. Using durable materials, we create low-maintenance, weather-resistant surfaces. Clients gain attractive extensions of their living areas ideal for entertainment or relaxation.
Questions
What areas do you serve?
We operate across Buckinghamshire, Oxfordshire, Hertfordshire, and Berkshire, focusing on domestic construction projects.
Do you work with architects?
Yes, we collaborate with local architects to bring design visions to life while maintaining practical functionality.
How do you handle project timelines?
We commit to agreed deadlines and provide regular progress updates to ensure timely completion.
Are your quotes inclusive of all costs?
Our quotations include all specified materials and labour with no hidden fees.
Can you handle urgent repairs?
While we don't offer emergency services, we prioritise prompt resolution of unexpected issues during projects.
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Reviews (3)
Jamie Howard
Nov 28, 2020
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I had Iwanski sort my bathroom out. They ripped out and installed a brand new bathroom to a high quality. Paul, who priced it, was there everyday before 8am on site working hard alongside the plumber and decorator. The old bathroom was like your nans bathroom from the 80s but they have provided me with a sleek and modern design, fit for a batchelor, and at an affordable price. We had some small issues, but they came out and resolved it fairly quickly and no job was too hard for them. I would definitely consider Iwanski and get a quote from them. I will he having them come back to do my ceilings
Laura Barilard
Jun 17, 2020
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We are working with Iwanski Design at the moment, and are very happy with how professional they are and how easy the communication is,. We may change ideas and they never seem to have a problem. I visit the site every day and am amazed at the constant evolution of the building. They are punctual, they are always working hard and super accommodating. Its a pleasure to have chosen this company, that has been recommended to us by our neighbours, and I have nothing negative to say about them.
Rachel Attwell
Oct 21, 2019
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Professional, reliable and brilliant to work with. I wanted a quick turnaround on my one bedroom annex and not only did they complete it in five weeks, but it was on budget and looks amazing! These guys are great, I would definitely recommend them and will use them for my next project.
