Why Get Professional Advice Before Starting Building Work

Youve got a vision for your dream extension. Maybe its opening up your kitchen into the garden. Maybe its turning your loft into a new bedroom.

Youve planned it for months, saved the money, and even found a builder you trust. The excitement builds — until someone mentions planning permission, party wall notices, or build over agreements. Suddenly, that simple project starts to sound complicated.

This is where early professional advice makes all the difference. Because the truth is, most construction problems dont start on site — they start long before the first shovel hits the ground.

Why Seek Professional Advice Early in a Building Project

Most building problems come down to one thing: not knowing what you dont know.

Get professional advice early – ideally at or even before RIBA Stage 0 – to understand what’s possible, what’s required, and what could go wrong.

Surveyors, architects, and planning consultants each bring specialist knowledge to the table. Together, they review permissions, feasibility, buildability, and risk, helping you decide whether your idea is viable and safe to proceed.

Think of it as building solid foundations before you even pour the concrete.

Early professional advice means your much more likely to spot red flags, handle the legal checks, and coordinate technical details before they become expensive problems. At Harrison Clarke, weve seen exciting looking projects delayed or derailed – all of which could have been avoided with one early consultation.

 

What Gets Missed When You Dont Seek Advice Early

Party Wall Matters

If your project involves a shared wall or boundary — like a side extension or loft conversion — the Party Wall etc. Act 1996 might apply. Ignoring it can cause disputes, stop notices, or even legal action.

Getting a surveyor on board early guarantees proper notice, informed neighbours, and agreements in place before starting work. Done right, its a smooth process. Left too late, it can bring the whole project to a halt.

 

Existing and Proposed Services

Underground and overhead services are often overlooked until its too late.
Drains, electricity cables, gas, and fibre optics all have strict placement rules.

If you accidentally build over a public sewer without a build over agreement, you could be forced to demolish your brand new building or pay for an expensive new diversion. Even if you are lucky and manage to negotiate a build over agreement, this will still cause delay, additional cost and stress.

Engage with a professional early to map, check, and integrate services properly – protecting your budget and peace of mind.

 

Planning Permission and Building Regulations

Many property owners assume their project falls under permitted development, only to find out later that it doesnt!

Planning permission and building control approval arent box-ticking exercises — theyre legal requirements. Without them, you risk stop notices, enforcement action, or difficulties selling the property later.

A surveyor can review your drawings, identify gaps, confirm any restrictions, easements etc. and flag compliance issues before construction begins, helping you avoid unnecessary delays and costly redesigns.

 

Site Constraints and Surveys

Every site comes with its own challenges — from sloping ground to flood zones and protected trees.

If you dont carry out the right site investigations, you could end up with structural surprises or drainage failures after work starts.

Appointing a surveyor to undertake a suitable survey of the property and assist with commissioning suitable test and investigations such as utility mapping, soils and ground conditions tests and potential engineering challenges can ensure

you know exactly what you’re dealing with from day one.

 

Boundaries, Access, and Scaffolding

Its more common than people think: legal boundaries that dont match whats physically on the ground.

If scaffolding or part of your structure crosses into a neighbours property, you could face complaints, delays, or even legal action.

Surveyors can help agree and define boundaries and if needed, draft and issue access, scaffold or crane licenses properly, helping you avoid conflicts and maintain smooth project progress.

 

The Cost of Skipping Professional Advice

Delays

Missing permissions, unresolved disputes, or incomplete surveys can stop progress immediately.
But failing to manage paperwork can halt builders, push schedules back and raise project costs.

Delays are the most predictable — and avoidable — outcome of skipping early advice.

 

Extra Costs

Projects go over budget every week because of problems that could have been prevented.

Redesigning drainage layouts, rerouting services, or resubmitting planning applications all add cost. And fixing an issue after it happens is always more expensive than preventing it in the first place.

 

Damaged Relationships

Neighbour disputes, planning conflicts, and construction stress can quickly strain relationships — with contractors, neighbours, and even your own project team.

Often, rebuilding lost trust demands significant time and often additional costs. Clear professional guidance early on help mitigate this by keeping everyone informed and aligned.

 

Legal and Compliance Risks

This is the one that can really hurt.

If you build without proper approval, you risk fines, enforcement action, or being forced to remove the works. You could also invalidate your insurance or face problems when remortgaging or selling later.

Skipping due diligence isnt saving time — its gambling with your investment and in commercial property, could even expose you to increased dilapidations claims at the end of the lease.

 

The Benefits of Doing It Properly

When you seek professional advice early, everything runs smoother.

Youll have:

A clear roadmap for planning, permissions, and regulations
A realistic budget and timeline
Confidence that your project design is compliant and achievable

Surveyors and consultants can also suggest ways to make your build more efficient — smarter layouts, better materials, or cost-saving alternatives that improve both quality and value.

Early advice doesnt just avoid mistakes. It sets your project up to succeed.

 

A Solid Start Leads to a Strong Finish

Getting professional advice before you start building isnt about adding red tape — its about protecting your investment.

It means fewer surprises, fewer disputes, and a smoother experience from start to finish.
Whether youre planning a simple home extension or a complex development, speak to a qualified and experienced surveyor first.

That one step could save you time, money, and unnecessary stress later on.

And if youd like tailored guidance, the team at Harrison Clarke Chartered Building Surveyorsis here to help — from feasibility and planning to surveys and project delivery.

For more expert advice on surveying and property matters, check out our range of informative videos on our website or YouTube channel. Harrison Clarke Chartered Surveyors is here to guide you every step of the way!

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Harrison Clarke Team - Dave

About the author

David Wallbridge, BSc (Hons) Grad Dip MFPWS MRICS

Associate Director

David started his career in 2007 working his sandwich placement at Rund Partnership Limited while completing his post graduate course in Building Surveying. David continued his career with Rund as a building surveyor, specialising in project management, focusing on delivering social housing. Becoming chartered in 2015, David opened his own building surveying practice and became a director of Talisman Homes, his family run business, where he applied valuable management and technical skills to private residential property development. 

After running his own company for 7 years where he served a variety of different clients, David made the decision to move back into more traditional employment, spending a year with large national multi-disciplinary practice Ridge and Partners LLP, before starting at Harrison Clarke in 2023