Old houses, carefully made new.
Family firm since
Homes renovated and extended
People on our own payroll
Workmanship guarantee
Services
Six things we do, all of them carefully.
Kitchens
Kitchens planned around how you cook, built by our own joiners.
from £28,000
·
6–10 weeks
Extensions
Rear, side-return and garden-room extensions that feel like they were always there.
from £60,000
·
14–22 weeks
Loft conversions
Bedrooms and studies in the roof, with dormers, roof lights and proper stairs.
from £45,000
·
8–12 weeks
Period restoration
Lime plaster, sash windows, flint and brick repairs done the traditional way.
from £3,000
·
1–12 weeks
Bespoke joinery
Built-in cupboards, bookcases, staircases and doors made in our own workshop.
from £2,500
·
3–8 weeks
Whole-house renovation
Everything at once: structure, services, kitchens, bathrooms and finishes.
from £120,000
·
20–40 weeks
About Mortise & Sons
The yard, Railway Lane
Our joinery workshop
Apprentices with Plumpton College
Before & after
Drag to see the difference.
Every project page has the full stage diary, week by week.
Our work
Old houses we’ve looked after.
Before
Extensions
·
Lewes
A side-return kitchen in Southover
Before
Lofts
·
Lewes
A loft study at St Anne's Crescent
Before
Period restoration
·
Lewes
Restoring a Georgian townhouse
Before
Kitchens
·
Lewes
A kitchen for a flint cottage in Cliffe
Before
Extensions
·
Ringmer
A flint garden room in Ringmer
Before
Joinery
·
Kingston
Library alcoves in Kingston
Before
Whole house
·
Barcombe
A whole-house renovation in Barcombe
Before
Period restoration
·
Newhaven
Twelve sash windows in Newhaven
How a job runs
Five steps, one person you can always call.
Every client gets a weekly update with photos, what happened, what’s next and any decisions we need from you.
01 / 05
Survey visit
Ruth or Tom visits, looks at the house, measures and listens. We tell you straight away if planning, party walls or an engineer will be needed.
Within two weeks · free
02 / 05
Drawings & fixed quote
Line by line, in writing, with every provisional sum explained. No vague totals.
Within ten working days
03 / 05
Booking & programme
A 5% deposit books your start date and a week-by-week programme: which rooms close when and when the noisy weeks are.
Usually 8–12 weeks ahead
04 / 05
The build
Our own site manager, carpenters, plasterer and joiners on site, a tidy house and a written update with photos every Friday.
Weekly photo updates
05 / 05
Snagging & handover
We walk round with you, fix anything that isn’t right, clean thoroughly and hand over every certificate and warranty.
10-year guarantee
Why Mortise
What makes us the easy choice.
Our own joiners
Staircases, sashes and cupboards made in our Lewes workshop and fitted by the person who made them.
Line-by-line quotes
Every line priced in writing. The final bill matched the quote on all but two jobs last year.
A weekly photo update
What happened, what’s next and any decisions we need, every Friday, so you’re never chasing us.
10-year guarantee
Workmanship guaranteed for ten years, backed by an insurance-backed FMB warranty.
What things cost
A straight answer before anyone visits.
Choose a job, a rough size and a finish. It’s a guide, not a quote, but it’s based on our real jobs.
Estimated cost · Kitchens
£44,000 – £81,000
Typical duration: 6–10 weeks
Prices are a guide for typical East Sussex jobs in 2026, including labour, materials and VAT, but not design fees, planning or building control.
Get an exact quote★★★★★
4.9
212
Google reviews
From the first visit to the final clean, they were calm, tidy and honest. The extension looks like it has always been part of the house.
Hannah & Joe
Lewes
·
Extension
Ruth's weekly updates were a lifesaver. We always knew what was happening next and what it would cost.
The Patel family
Barcombe
·
Whole house
They repaired twelve sash windows we'd been told to replace. Warmer house, and a fraction of the price.
Sophie
Newhaven
·
Sash windows
The loft stair is a piece of furniture. Dan made it in their workshop and fitted it in two days.
Marcus
Lewes
·
Loft
They understood our listed house better than we did and handled all the consent paperwork.
The Ashby family
Lewes
·
Restoration
The quote was the only one that listed everything. The final bill matched it to the pound.
Clare
Cliffe
·
Kitchen
1987
Family-run since
Where we work
Lewes, and about twenty miles around.
Type your postcode to check. For larger jobs we sometimes travel further.
Lewes
Ringmer & Glynde
Newhaven & Peacehaven
Seaford
Brighton & Hove
Uckfield
Haywards Heath & Burgess Hill
Eastbourne
From the yard
