.png)
Do you need an extension—or a better layout?
Should we do this project? · Episode 17
Andrew Dobson with Tina Patel
An extension can give you a wonderful new room while leaving the middle of the existing house dark and difficult to use.
Architect Andrew Dobson joins Tina to explore how sketches, a clear brief and an honest budget conversation can test the idea before you become committed to building it.
They improved the house by taking the conservatory away
Andrew describes working with the owners of a 1960s or 1970s house to avoid extending it. The options included removing the conservatory and making better use of the volume they already had.
Several sketch iterations helped the client see that a useful solution did not depend on adding floor area. The confidence to proceed came from testing how the rooms could work together.
That is the question to ask of your own idea: what would the whole house gain? A smaller extension or a rearranged layout may solve the problem while preserving more of the space, light and budget you already have.
01
Explain the problem
Describe how you want to live.
02
Sketch the options
Test the whole house.
03
Check the budget
Compare cost and priorities.
04
Resolve the risks
Bring in the right expertise.
Put the dining table on the sketch before fixing the walls
Andrew uses sketches drawn to scale so the furniture fits as it would in the finished room. Tina highlights how easily a hand drawing can change while the homeowner and architect discuss alternatives.
The conversation can uncover choices the homeowner had not considered, such as moving the kitchen rather than treating the existing plumbing position as fixed. It also tests light, rooflights and the connection to the garden.
A room planner can help arrange objects. The additional value Andrew describes is the conversation behind the layout: understanding how you live, asking the right questions and testing different ways to make the space work.
Your budget is a tool for choosing, not a number to hide
A spending figure may come from a television programme, a friend's project or an initial expectation. Andrew separates that starting number from what the proposed work is likely to cost and what the homeowner can afford.
He and Tina discuss keeping design and budget together: explore the benefit of an option, understand its cost, and decide whether to fund it or reduce the scope. Priorities help identify what can go first if the estimate is too high.
Cost advice can begin once there is something on paper, with a range appropriate to the information available. Keep testing the figures as the scheme develops, before the design becomes difficult to change.
Ask which part of the idea needs another expert
Andrew describes a penthouse layout that needed specialist fire input. The team recognised the issue early, developed the arrangement and brought in a consultant to test it before the building-regulations submission.
A different example, an unusual house in Highbury, involved deliberately testing a planning boundary because the extra space offered a substantial benefit. The homeowner understood that the outcome, time and cost remained uncertain.
The architect's role includes identifying these issues and explaining when specialist help is needed. Ask which risks belong to your particular site and design, so the investigation and fees form part of the plan.
Three decisions to take into your project
01 Test the space you already have.
Compare a different layout with the extension you first imagined.
02 Make the options tangible.
Use scaled sketches to test furniture, circulation and light.
03 Discuss cost and risk together.
Agree what you can spend and what needs investigation before committing to the design.
The full conversation
Andrew Dobson of Andrew Dobson Architects joins architect Tina Patel for a conversation about whether a renovation or extension idea is realistic. Tina hosts this episode.
The full discussion explores brief development, sketches, budget priorities, planning risk and specialist input. Andrew's project examples show how an idea can be refined step by step into a home that works better.
Listen on Spotify · Apple Podcasts · Podbean
Explore a related episode
Episode 1: Before you start: agree your brief and budget
Turn your household priorities into a useful project brief.
Episode 19: Budget or design: which comes first?
Test the design and budget together as your options develop.
Keep in touch
Get new episodes and useful podcast updates by email. Get email updates →