How much should a veranda cost, and how do you compare two quotes fairly?

The three cost layers

Think of a veranda quote in layers. The structure comes first, meaning posts, beams, wall bar and fixings. The roof comes second, and glass grade is the biggest lever here. The site work comes third, covering bases, levels and drainage. Every difference between quotations lives in one of those layers, and asking which layer a difference sits in usually gets a straight answer.

1. 1Structure: profile sizes, post count, wall fixing method
2. 2Roof: toughened, laminated, coated or polycarbonate glazing
3. 3Site: base preparation, level correction, gutter and downpipe route

Roof material, ranked by what it does for you

Polycarbonate is the cheapest and the noisiest, and it ages visibly. Toughened glass is the sensible baseline and what most people choose. Laminated glass adds cost and adds calm, because the interlayer takes the sting out of heavy rain. Solar control or tinted glass is worth it on a south facing wall where afternoon heat is the real complaint.

Span, posts and the deflection question

Ask what the maximum span is for the beam being quoted, not for the system generally. A slimmer beam over a wide opening looks elegant in a drawing and sags in a decade. If one quote has three posts and another has four across the same width, that is not a design preference, it is a structural decision with a cost attached.

The wall, which decides more than people expect

Fixing a veranda to sound brickwork is routine. Fixing to render over blockwork, to a timber framed wall, or under a soffit where the load has to pass into the structure rather than the outer leaf, needs a different approach. A freestanding frame avoids the issue entirely at the cost of two more posts. Any of these can be right, but only one will be right for your house.

If nobody has asked what your rear wall is built from, they have not priced your job, they have priced an average one.

Extras and how they are usually priced

Lighting, heating, screens and side glazing are priced per element rather than as a package, which is why quotes can look similar until you read the schedule. Get them itemised so you can drop one without renegotiating the whole job, and so you know what has been prepared for future addition even if you are not buying it today.

• LED lighting integrated in the beam
• Infrared heaters with the correct supply allowed
• Zip screens per bay, wind resistant
• Fixed side glass to the prevailing weather side
• Remote or app control where motors are involved

A fair way to compare

Put the quotes side by side and match them layer by layer rather than on the headline. Where a line is missing, ask for it in writing. A quote that grows once the difference is explained is not a rip off, it was simply incomplete, and it is much better to find that out now than after the posts are in.