Process · Detail

Dormer orientation: preparing before you request quotes

Good preparation turns vague quotes into useful comparisons. Spend a little time upfront and every company will quote the same job.

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Short answer

Before you request quotes, decide what you want the dormer for, how much you can spend, what it should look like, and whether you need help with permits. Write it down in a one-page brief.

Define your goals

The purpose of the room drives the design. A bedroom needs ventilation and blackout options. A home office needs light and noise control. A bathroom needs plumbing and privacy.

Use — bedroom, office, bathroom, storage, playroom.
Light — how many windows, opening sections, and sun direction.
Space — headroom, usable floor area, and connection to the rest of the loft.

Set a budget

Look at guides for your size and material, then add a contingency. Being honest about your budget helps companies propose realistic solutions.

Choose a style

Look at dormers in your street and online. Decide between flat-roof, pitched-roof, prefab or traditional, and materials such as timber, PVC or composite.

Permit pre-check

Check your council's planning rules or ask a company for a quick opinion. If the project is likely to need permission, factor in time and cost before you compare quotes.

The full checklist

Checklist

Before requesting quotes

01I know what the room will be used for.
02I have a realistic budget range plus contingency.
03I have measured the loft roughly and noted headroom.
04I have photos of the roof, street and loft.
05I have looked at dormer styles I like.
06I know which material I prefer or am open to advice.
07I have checked planning rules or asked for an opinion.
08I know whether I want the company to handle permits.
09I have a one-page brief to send to every company.

FAQ

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01What should I decide before requesting dormer quotes?

Your budget, the purpose of the space, the rough size, the style you want, and whether you need the company to handle permits. The clearer you are, the better the quotes.

02Do I need an architect for a dormer?

Not always. Many dormer companies supply technical drawings for permit applications. For complex designs or listed buildings, an architect or surveyor is useful.

03How do I budget for a dormer?

Start with a realistic range for your size and material, then add 10–15% for unexpected items like access issues, permit delays or interior finishing.

04What photos help at this stage?

Photos of your roof, street, nearby dormers, and the inside of the loft. They help companies understand context and constraints before visiting.

Conclusie

Preparation does not limit your options — it makes them clearer. Companies respond better to a brief they can understand, and the quotes you get will be easier to compare.