Extension Builder Cost in Ely

Building an extension in Ely is a significant investment, and costs vary considerably depending on size, design, materials, and planning complexity. A single-storey extension might cost £25,000–£50,000, while a two-storey build could reach £80,000–£120,000 or more. Prices depend on foundation depth, structural requirements, local labour availability, and whether listed building consent is needed. BizHub365 connects Ely homeowners with experienced local extension builders to get accurate quotes tailored to your project.

Extension Builder Prices in Ely

Service	Typical Cost	Unit
Single-storey extension (basic, 4m × 4m)	£25000 – £45000	per project
Single-storey extension (larger, 6m × 5m)	£40000 – £65000	per project
Two-storey extension (4m × 4m)	£65000 – £95000	per project
Two-storey extension (6m × 5m)	£85000 – £130000	per project
Ground-level preparation & footings	£3000 – £7000	per job
Structural steelwork & lintel installation	£2500 – £6000	per job
Roof installation (pitched or flat)	£4000 – £10000	per job
Planning & Building Regulation approval coordination	£800 – £2500	per project

Prices are indicative averages for Ely. Actual quotes will vary based on job specifics.

What Affects the Cost?

Extension costs in Ely depend on several key factors: ground conditions (chalk and clay affect foundation depth and expense), size and storey count, roof type and complexity, materials selected (rendered block, brick matching, or premium finishes), proximity to utilities, whether listed building consent applies, and current local labour availability. Planning permission timescales and Building Regulations inspection fees also influence project costs. Detailed site surveys often reveal unforeseen ground or structural issues that affect pricing.

Money-Saving Tips

Request fixed-price quotes rather than time-and-materials estimates. Simplify roof design (flat roofs cost less than pitched). Avoid peak building season (spring–early summer). Use standard materials and finishes matching your home's existing style. Obtain outline planning approval early to avoid costly redesigns.

Frequently Asked Questions

Do I need planning permission for an extension in Ely?

Most single-storey extensions qualify for permitted development if they don't exceed 4m depth (or 3m for detached homes), stay within 50% of your plot, and maintain proper setbacks. Two-storey extensions and some locations (conservation areas, listed buildings) require planning permission. Building Regulations approval is always required. Check with Ely City Council planning team or ask your builder.

How long does an extension typically take to build?

A single-storey extension usually takes 12–16 weeks from groundwork to completion. Two-storey projects typically take 20–28 weeks. This includes planning/Building Regulations approval (8–12 weeks), groundwork (2–3 weeks), structural build (8–12 weeks), and finishing (4–6 weeks). Weather and unforeseen issues may extend timescales.

What's included in an extension builder's quote?

A full quote should cover site preparation, foundations, structural works, roofing, windows and doors, external finishes, internal finishing (plasterboard, flooring, decoration), utilities (electrics, plumbing, heating), and Building Regulations inspections. Clarify whether scaffolding, site clearance, and planning coordination are included, as these often add £1,500–£3,000.

Are extension costs higher for listed properties in Ely?

Yes, listed buildings require conservation-standard materials and detailed heritage consent, adding 15–25% to project costs. Planning approval often takes longer (12–16 weeks). Specialist builders familiar with listed requirements are essential and may charge premium rates, but deliver authentic results that preserve property value.

Get this pricing guide emailed to you

We'll also send you money-saving tips for hiring a extension builder in Ely.

Find Trusted Extension Builders in Ely

Join BizHub365 and connect with experienced, vetted extension builders across Ely and East Anglia. Manage quotes, schedules, and projects in one secure platform. Sign up free and start growing your business today.

Are you a Extension Builder?

Get listed in Ely

Appear on this page and reach customers searching for extension builder costs in Ely.

Claim Your Listing

Find Extension Builders in Ely

Browse extension builder businesses near Ely, compare reviews, and get quotes.

Browse Local Extension Builders

How Much Does an Extension Builder Cost in Ely?