Quantity surveying for homeowners
Know what your project should cost — before you commit.
Planning an extension, refurbishment, or new-build home? NAPA provides independent quantity surveying advice to homeowners — from initial budgets and builder tender comparisons through to valuations, variations, and final account.
Get independent adviceYou shouldn't need to be a construction professional to protect yourself.
Most homeowners go into a building project with a rough idea of cost, a few quotes from builders, and a hope that it all works out. Often it doesn't — budgets overrun, quotes aren't comparable, and variations pile up without proper scrutiny.
NAPA gives you the same commercial oversight that developers and investors use on every project — applied to your home. Independent, plain-speaking, and on your side.
Our services
Simple packages. Clear answers.
Choose the level of support you need — from a one-off budget check to full financial management of your project.
Cost Plan
"What should my project cost?"
Before you approach a single builder, understand what your project should realistically cost. We produce an independent cost plan based on your drawings and specification — giving you a reliable benchmark to measure every quote against.
- Elemental cost breakdown
- Market-rate benchmarking
- Contingency and risk allowances
- Written cost report
Tender & Builder Quote Review
"Are these quotes comparable and reasonable?"
Received two or three quotes and not sure how to compare them? We review your builder quotes in detail — checking what's included, what's missing, and whether the price is reasonable for the scope of work.
- Line-by-line quote analysis
- Comparison across multiple tenders
- Identification of gaps and exclusions
- Written recommendation report
Construction Cost Control
"Is what my builder is charging me correct?"
Once work is underway, costs can drift — through variations, disputed extras, and inflated valuations. We review your builder's payment applications and variation claims, so you only pay what you genuinely owe.
- Monthly valuation checks
- Variation assessment and negotiation
- Overpayment protection
- Final account review
Full QS Service
"Manage my project finances from design to completion."
Our most comprehensive offering — full quantity surveying support from initial budget through to final account. We sit alongside you for the entire project, managing all commercial matters so you can focus on the build.
- Initial cost plan and budget
- Tender management and builder selection
- Contract advice and appointment
- Monthly valuations and cost reporting
- Variation management throughout
- Final account negotiation and sign-off
Why it matters
The numbers speak for themselves.
1 in 3
home projects exceed budget by more than 20%
£15k+
average overpayment on a typical extension without independent oversight
100%
of our clients say they would use independent QS advice again
How it works
Straightforward from the start.
01
Tell us about your project
A short conversation — by phone or email — to understand your project, your stage, and what you need from us.
02
We agree the right service
We'll recommend the most appropriate package and provide a fixed fee quote. No hourly rates, no surprises.
03
We get to work
We review your drawings, quotes, or live project and produce clear, written advice you can act on immediately.
04
You stay in control
Armed with independent advice, you negotiate from a position of knowledge — and pay only what your project is genuinely worth.
Common questions
What homeowners ask us.
Get independent advice before it costs you more.
A short conversation with our team costs nothing. Understanding your project's true cost could save you thousands.
Speak to a QS