wheelchair access for my Mum

We are asking for assistance to help build a ramp on my 87 year old mother’s house who is a pensioner. My mum is almost completely blind from macula degeneration and has very bad osteoarthritis in both knees and is currently recovering from a number of blood clots in one leg which makes walking any distance and up  and down stairs difficult. There is currently 13 steps she has to climb up and down to get in and out of the house and consequently she very seldom goes out of the house unless she has to go to Dr or to hospital. She is also deaf and has some heart failure and some other health issues.    She has had  a recent fall this year which resulted in broken ribs and shoulder  damage which has left her with  restricted movement in her right arm and shoulder which means she needs assistance with showering and dressing.  She is on a my aged care package Level 3 but they will only contribute what is left in her package to the cost of the ramp which is  $4,000. They have organized a quote according to the ASA standards for the ramp which will accommodate a wheelchair and would involve having to put another door into the house as it is not possible to put the ramp to the current entry and a wheel chair through the doorway.

My mum is very independent and wants to stay in her home as long as possible and a ramp would make this possible and would mean she could spend some time outside. The current estimate for building a ramp that we have received is$13,299 of which her package would contribute 4,000 so we would need to raise $9,299. If the ramp can be reused after my mum no longer needs it we are happy to donate it or the materials to another person in need through an aged or disability care agency.
Quote from builder Below 

We are pleased to provide a quote to:
1. Remove the window in the lounge and the section of wall framing, etc under the window. Construct a new door way and a fixed panel to make up the difference in the opening. The new door to be 900mm wide to allow for a wheelchair.

2. Construct a new ramp system from the new doorway to the footpath.

 The ramp to consist of a 2000x2000mm landing at the door, reducing down to a 1200mm wide ramp.
 The ramp to have a 1200mm wide landing half way down as per the Australian Standards.
 The ramp and landings to have handrails as shown on the drawings.
 The junction between the new ramp and existing footpath will be concrete finished level with the foot path.
 The new ramp to constructed using hardwood bearers, joists and posts.
 Decking to be used is merbau hardwood and handrails to be steel.
 All new work to be painted and all builders rubbish to be removed from site upon completion.

TOTAL COST OF ALL DESCRIBED EXCL GST: $12090.00
TOTAL GST: $1209.00
TOTAL COST OF ALL DESCRIBED INCL GST: $13299.00
Labour: $4000
Materials: $8090
No allowance has been made for asbestos testing, asbestos removal or work on asbestos containing materials.