New roofs, re-roofs and repairs in tile, slate and flat felt or GRP — plus fascias, soffits and guttering.
Builders · Luton & Bedfordshire · Est. 2008
From the roof to the driveway — one team that does it all.
Zii Builders has been building, fixing and refurbishing homes across Luton, St Albans and Bedfordshire for 18 years. Every trade in-house — no chasing five different contractors.
Free quotes
Fully insured
Workmanship guarantee
18Years building & maintaining homes
What we do
All services
Every trade. In-house.
Single and double-storey extensions from footings to final coat of paint, building regs handled.
Extensions
More on extensionsTurn unused loft space into bedrooms, offices and en-suites — dormer, hip-to-gable or Velux.
Loft Conversions
More on loft conversionsConvert your garage into warm, usable living space — from home office to annexe.
Garage Conversions
More on garage conversionsCustom sheds, workshops and garden rooms, built to last — bases, roofing and electrics included.
Sheds & Garden Rooms
More on sheds and garden roomsStrong, straight fencing and gates, fitted properly with concreted posts.
Fencing & Gates
More on fencing and gatesFull kitchen refits — design, supply and installation with plumbing, electrics and tiling in-house.
Kitchens
More on kitchensBathrooms, en-suites and wet rooms, fully project-managed from strip-out to sealant.
Bathrooms
More on bathroomsBlock paving, resin and slabbed driveways and patios with proper drainage and edging.
Driveways & Patios
More on driveways and patiosFront and back gardens transformed — hard and soft landscaping, decking and retaining walls.
Landscaping
More on landscapingFrom dripping taps to full bathroom and heating pipework — tidy, tested and guaranteed.
Plumbing
More on plumbingSafe, certified electrical work across the home, from a single socket to a full rewire.
Electrical
More on electrical18 yearsEstablished in Luton since 2008 — the same team, year after year.
Free quotesNo call-out fee, no obligation. The price we quote is the price you pay.
Fully insuredPublic liability insurance on every job, big or small.
GuaranteedWorkmanship guarantee on all building work — in writing.
How it works
Quote to done, in four steps
- 01
Message us
WhatsApp us photos of the job, or send the quote form — whichever suits.
- 02
Free site visit
We come out, measure up and talk through options. Written quote, no obligation.
- 03
We do the work
One in-house team, a clear schedule, and a site left tidy every evening.
- 04
Guaranteed
Walk-through together at the end, and a written workmanship guarantee.
Recent work
See all projects
Jobs we're proud of
Extension
Rear extension & open-plan kitchen
Luton
Roofing
Full re-roof in natural slate
St Albans
Loft
Dormer loft conversion with en-suite
HarpendenReviews
What homeowners say
“They re-roofed our house in four days, tidied up every evening, and the price didn't move a penny from the quote.”
“One team handled the whole extension — brickwork, plumbing, electrics, plastering. Saved us chasing five different trades.”
“We've used Zii for maintenance jobs for years. Reliable, honest, and the work is always spot on.”
Got a job in mind? Send us photos on WhatsApp.
Snap the roof, the garden, the bathroom — we'll come back with a free quote.