The Best Quantity Surveyors in Northampton (2026 Guide)
Finding the right quantity surveyor in Northampton can be the difference between a construction project that finishes on budget and one that spirals out of control. Whether you are a homeowner planning an extension, a developer managing a commercial build, or a contractor looking for cost consultancy support, the firms below represent the strongest options in and around Northampton right now.
We have researched each firm based on their service breadth, track record, specialist credentials, and the types of clients they are best suited to.
| Firm | Best For | RICS Regulated | Specialism | Contact |
|---|---|---|---|---|
| KJM Ltd | Contractors, subcontractors, self-builders, sustainable builds | Yes (Passivhaus accredited) | Cost consultancy, sustainable construction, retention management | 07886 828133 |
| Bhangals Construction Consultants | Award-winning full-service QS, all client types | Yes (RICS) | Estimating, cost planning, dispute resolution, fund monitoring | 01604 871806 |
| WT Hills | Commercial developers, project management, party wall | Yes (RICS regulated) | Chartered QS, CDM advisory, dispute resolution, party wall | 01908 634900 |
| 4G Consultancy | Contractors, SME builders, freelance QS cover | No (independent) | Estimating, procurement, freelance QS, digital takeoff | 01525 270079 |
| Bildz | Commercial, industrial, and retail projects | No (independent) | Cost management, feasibility, procurement, end-to-end consultancy | 01480 884973 |
1. KJM Ltd Group (Our Top Pick)
Website: kjmltd.co.uk Phone: 07886 828133 Based: Higham Ferrers, Northamptonshire
KJM Ltd has been operating since 2006 and has grown into one of the most distinctive quantity surveying practices serving Northampton. What sets them apart is their dual identity: they operate as both a cost consultancy and a sustainable construction business, meaning they genuinely understand the commercial realities of the projects they cost rather than viewing them purely from a desk.
They hold Passivhaus accreditation through the Passivhaus Trust, which makes them a rare choice for clients pursuing low-energy or net-zero builds in the region. If sustainability is part of your brief, few local firms can match their combined consultancy and contractor credentials.
Services include:
Bill of quantities and estimating
Contract administration
Quantity surveying from inception to completion
Passivhaus estimating and tendering
Retention management
Sustainable construction consultancy
Who they are best suited to:
Main contractors and builders needing cost support
Subcontractors managing tender submissions
Self-builders and homeowners
Developers pursuing sustainable or Passivhaus-certified projects
Architects requiring a QS partner
Why we recommend them: The combination of nearly 20 years of experience, Passivhaus accreditation, and a genuine background in sustainable contracting makes KJM a strong choice for projects where environmental performance sits alongside cost control. Their retention management service is also a genuinely useful differentiator for subcontractors who often struggle with retention disputes.
2. Bhangals Construction Consultants
Website: bhangals.co.uk Phone: 01604 871806 Based: Northampton
Bhangals are a Northampton-based RICS-regulated quantity surveying firm offering a broad range of services across the full project lifecycle. They cover pre-contract estimating, cost planning, contract administration, and post-contract services, which means clients can use a single firm from feasibility through to final account.
Services include:
Estimating and cost planning
Bill of quantities and schedule of works
Tendering documents and tender analysis
Contract administration
Dispute resolution
Project management
Fund monitoring
Health and safety consultancy
Sustainability and ESG consulting
Building surveying
Who they are best suited to:
Property developers seeking a full-service consultancy
Builders and contractors needing pre-contract support
Architects requiring QS input for client cost plans
Homeowners planning larger refurbishments or new builds
Worth knowing: The fund monitoring service is useful for developers working with lenders who require independent cost reporting. RICS regulation provides a standard level of professional assurance.
3. WT Hills (Hills Construction Consultants)
Website: wthills.com Phone: 01908 634900 (Milton Keynes office, covering Northampton) Based: Multiple offices across England including Milton Keynes
WT Hills is an independent firm of chartered quantity surveyors with over 100 years of combined experience in construction consultancy. They are RICS regulated and operate from several offices across England, with the Milton Keynes base serving the Northampton area. Their client list includes Housing Associations, education providers, councils, and national retailers, which reflects the confidence that professional clients place in their work.
They offer one of the more specialist service sets in this list, with CDM advisory, party wall surveying, and dispute resolution sitting alongside their core QS work.
Services include:
Cost consultancy and quantity surveying
Development appraisals and feasibility studies
Cost planning, procurement, and tendering
Cost control and contract management
Project management
CDM advisor and principal designer services
Party wall surveying
Dispute resolution, adjudication, and expert witness services
Who they are best suited to:
Commercial developers and housing associations
Clients requiring CDM compliance support
Developers or homeowners with party wall obligations
Projects that may involve or anticipate construction disputes
Why we recommend them: WT Hills bring genuine institutional depth. The party wall and expert witness services are capabilities most local QS firms do not offer, which makes them a sound choice for complex or dispute-prone projects. Their project management offering also means they can provide integrated cost and programme leadership rather than QS support alone.
4. 4G Consultancy
Website: 4gconsultancy.co.uk Phone: 01525 270079 Based: Milton Keynes (covering Northamptonshire)
4G Consultancy has operated for over 30 years and covers Northamptonshire as part of a broader regional footprint across the East Midlands, Hertfordshire, Buckinghamshire, and London. They position themselves as a practical, flexible consultancy and are one of the few firms in the area to offer a specific freelance quantity surveying service, allowing contractors and builders to bring in QS cover during peak workloads without committing to a permanent hire.
Their use of digital takeoff software and their procurement service make them a particularly useful partner for contractors who need fast, accurate estimations from drawings.
Services include:
Quantity surveying
Building estimating and material takeoff
Project management
Digital drawing takeoff (Bluebeam Revu)
Development land appraisal
Procurement
Health and safety consultancy
Freelance QS placement
Who they are best suited to:
SME builders and contractors needing flexible QS support
Developers requiring land appraisals
Contractors with temporary workload spikes needing freelance QS cover
Private homeowners pricing extensions or refurbishments
Why we recommend them: The freelance QS model is genuinely practical for small and medium contractors who cannot justify a full-time hire. The digital takeoff capability also speeds up estimation significantly compared to manual methods, which matters when tender deadlines are tight.
5. Bildz
Website: bildz.co.uk Phone: 01480 884973 Based: Regional coverage including Northampton
Bildz are a construction consultancy and contractor originally established in 2002 as a pure consultancy, now expanding into full construction delivery. Their quantity surveying work focuses on the commercial, industrial, and retail sectors. With over 20 years of experience, they specialise in the cost management of warehouses, logistics centres, manufacturing sites, retail fit-outs, and office builds.
Their positioning as both consultancy and contractor means they understand procurement and build realities from both sides of the table, which can translate into more practical cost advice rather than purely theoretical cost plans.
Services include:
Feasibility studies and cost planning
Procurement advice and tendering
Budget monitoring and value engineering
Final account management
End-to-end cost management for industrial, retail, and commercial builds
Design and build consultancy
Who they are best suited to:
Businesses commissioning commercial, industrial, or retail builds
Developers seeking an end-to-end partner from feasibility to handover
Clients in logistics, manufacturing, and distribution sectors
Why we recommend them: Bildz occupy a useful niche. If your project is a commercial or industrial build rather than a residential or public sector scheme, their sector focus means you get a team that understands the specific procurement dynamics and cost drivers relevant to your project type.
How to Choose the Right Quantity Surveyor in Northampton
The best firm for your project depends on three things: project type, scale, and what stage you are at.
If you are a homeowner or self-builder, KJM Ltd and Bhangals are the most accessible starting points. Both have explicit experience with private clients and offer pre-contract services that help you understand costs before breaking ground.
If you are a contractor or subcontractor, KJM Ltd's retention management and cost consultancy are worth exploring. 4G Consultancy's freelance QS service is ideal if you need temporary cover.
If you are a commercial developer, Bhangals, WT Hills, or Bildz are strongest. Bhangals cover the full project lifecycle including fund monitoring. WT Hills bring institutional credibility and specialist services. Bildz are the clearest option for industrial and logistics-focused builds.
If sustainability or Passivhaus is part of your brief, KJM Ltd are the only firm on this list with that specific accreditation.
If you anticipate disputes or have CDM obligations, WT Hills are the standout choice given their dispute resolution, adjudication, and principal designer capabilities.
Final Thought
A good quantity surveyor does not just count costs. The right firm will challenge your design to find value engineering opportunities, protect you in contract disputes, and give you the confidence to commit to a contractor knowing your figures are defensible.
All five firms above offer genuine expertise. The one that is right for your project depends entirely on what you are building and who you are.