027 443 3732 nick@yourqs.co.nz

Residential Cost Estimating

Accurate and understandable

Uses the latest 3D technology

Rennovations or new builds

For builders, designers, or home owners


Spending a fortune on estimating?

You’ve worked up a design to your client’s brief but does it meet their budget?

YourQS lets you know without breaking the bank.


Spending your evenings doing take-offs?

You are talking to a potential customer who has a design that they like but will it cost what they think and can they afford it?

YourQS can help

Home Owners

Waiting to get a price back?

Want to get an idea of what you changes might cost?

YourQS can quickly give you an independent cost estimate.

How does it work?

We can create a cost estimate for you using whatever design information that you can provide, most commomly PDF drawings but can be hand sketches or even photographs.  We use this to create a 3D model of the project work, our software analyses the model and creates a complete schedule of quantities.  This includes materials, labour, subcontractors, equipment, and general expenses.  Give us your supplier’s pricing and we’ll use that otherwise we have our own database of market rates database.

The design could be anywhere between a preliminary concept or full working drawings.  The more complete the design information is, the fewer assumptions and therefore a more accurate cost.

We use industry best practice and the smartest of tools and processes to ensure that they are as accurate as possible.  Our approach of creating a 3D model gives visual confirmation of each element, that they are there, and the size is correct, something that measuring from a drawing can’t do.  A written description of each part of the project scope helps all parties clearly understand what is included in the estimate.

This technology is called BIM (Bulding Information Modelling) and is becoming more widely used around the world, but we are pusing it further into the estimating space than anyone else.  Coming soon, we’ll be able to extract this straight from the designers 3D BIM model using our plugin.

Find Out More

If you would like to know more, then please don’t hesitate to contact us!

Getting started with biscoBureau

You can start the process a number of different ways

From a PDF

By sending us a PDF of the plans for your new house and alteration.

We can take the PDF (or in fact photos) and create a 3D BIM model for you from it.

Graphisoft ArchiCAD

If the design is in ArchiCAD send us the IMx model and a set of the drawings as a PDF and we can start there.

Floor Plan Apps

Use a measuring or survey app to create a floor plan of your house and the changes required.  Then email this to us.

Apps are available for iPad or Android that allow you quickly and easily to map an existing house and sketch up your ideas.

Autodesk Revit

If you use Autodesk Revit, send us a DWF model and the standards PDF drawings.  We can then create the estimate for you

Fast and Accurate

Don’t wait, start saving time and money, send us your project now.

Our professioanl looking estimate will give you the competitive edge.

What is BIM?

You can start the process a number of different ways

BIM is short for Building Information Modelling and uses a 3D CAD model from the designer to create an accurate virtual model of the house.

You build a model of the house using objects that represent the real world elements, These objects are intelligent and know information about themselves.


For example a wall knows that it is a wall, knows it’s materials, the height, length, thickness and volume. It also knows that it is fixed to a concrete floor so to allow for concrete anchors, and knows what finish is applied.

These objects allow us to build the house virtually before building it in reality.  This allows us to very accurately work out the costs involved and to identify potential construction issues.

The technology that we use, biscoPro, is able to understand the BIM and then analyses the objects dimensions and information using this to determine the materials, labour times, subcontractors required, and equipment needed to build the house.


biscoPro allows us to add in objects for elements not normally included in the design process like scaffolding, site security fences, tarpaulins, so that costs for these are also determined

A short video on the process – tbd

How accurate are your estimates?

There are two parts to answering this: is what I expect included, and have you calculated the costs correctly?

Our technology is a big advance forward in solving these two problems that arew issue swith any estimate.

By using a 3D model anyone can easily see what is included and just how big it is.  Our estimate report gives you a 3D visualisation for each scope, a short description of the work, a schedule of the building elements, and a detailed cost breakdown.

The cost breakdown does a complete “bottom up” estimate for every 3D element using its characteristics and dimensions.  Rather than relying on estimators gut feel for how long something will take and what it will cost, we have developed detailed costing algorythms based on industry best practice, suppliers installation information, years of experience, and feedback from our customers, to calculate the required materials, materials, equipment, sub contractors, and labour as accurately as possible.  It has taken years to research and develop our costing assemblies and they contain decades of organisational knowledge that is now available to you.

An experienced estimator could achieve the level of detail and accuracy by hand using traditional estimating methods, but it would take days to do this across a project, using the power of computers means that we can do it in minutes, and the accuracy is repeatable.


Preliminary Estimate

A preliminary estimate is a cost breakdown done before a project is completely designed.  It allows you to get a feel for costs while still in the decision making stage so that you can make changes while understanding the cost impact of these.

A preliminary estimate can use very limited information, even just a concept sketch, and will make assumptions about any details not provided.  The more assumptions, the more likely the estimate will be wrong, but at least it gives you something to work with.

Expected accuracy from concept drawings could be in the range of -50% to +100% as most aspects of the building will have significant design assumptions that may well change in the finalised design.  With working drawings a preliminary estimate will generall fall in -15% to +25%, primarily due to assumptions about material cost rates and subcontractor charges.

A YourQS Preliminary Estimate is quick and inexpensive so represents a good investment before you start committing to real money decisions.

While a YourQS preliminary estimate is very detailed, it should not be used for fixed price contracts as there are too many unknowns and variables build into the assumptions used to create it.

Detailed Estimate

A detailed estimate takes the Preliminary Estimate and looks to remove as many of the assumptions as possible.  This is generally by ensuring that the drawings are consent quality (or better), complete, the specifcation is complete, and material suppliers and sub trades have provided quotes for the key aspects of the project that are difficult to estimate or tend to vary with market conditions.

While YourQS can estimate what a subtrade may charge for their work based on history and market information, the construction market dynamics change quickly depending on how busy a trade is the local area and how keen they are for new work.  This affects the hourly rates they charge and the margins that they apply.

YourQS can approach your nominated sub trades on your behalf for a quote, or you can source the quotes and provide them to us for inclusion in the overall project estimate.

If your materials supplier provides you with a price list, YourQS can use this for the pricing, or we can provide a quantity schedule for you to give to your supplier to price ensur

By doing this we get accurate information for materials and sub trade prices so the variability comes down to the accuracy of the quantity take-off for marterials and the estimates of the labour hours.

We would expect a detailed estimate with sub trade quotes to be around +/- 5-10% on new building work.  Of course, with renovations in particular, these can be harder to predict so a detailed estimate is still likely to be +/- 10-20%.

Get Started Today!

Start saving money and increase your profits with BIM modelling…